世聯(lián)翻譯公司完成供熱項(xiàng)目英文翻譯

The project is the first demonstration project of Yinchuan HRBEE Program. Now the soft topics of Yinchuan heat price study have been started up and the progress of these works greatly contributes to HRBEE program in Yinchuan. What is adopted in Yinchuan building heat exchange station project is building heat exchange technology with higher efficiency than traditional large heat exchange. The technology can better match the reform of heat metering and fee collection in Yinchuan and bring the energy efficiency of energy-efficient building into full play.
1.1.2 Status quo and course of HRBEE program
During the “10^th Five-year Plan” Period, relevant laws, regulations and standards were carried out in Yinchuan. With supervisory measures, through intensification of project design review and final acceptance for building energy efficiency, all of newly constructed buildings in downtown of our city reach the requirements for the step 2 of building energy efficiency -50%. Since 2007 the step 3 of building energy efficiency -65% -will be implemented for the newly constructed buildings. However, limited by economic condition and technical capacity in Yinchuan, there are many challenges over the implementation of building energy efficiency of 65%.世聯(lián)翻譯公司完成供熱項(xiàng)目英文翻譯
According to documental spirit of “Circular Concerning Transmitting ‘Guiding Opinions about Pilot Works of Urban Heating System Report’” issued by eight ministries and commissions of the state, Yinchuan government implements heating system reform with level-by-level method, including launching “Regulations on Heat Supply Management in Yinchuan” and appointing thermal metering and fee collection standard, implementation measures and others.
By the end of 2010, total urban centralized heating area was 50 million m2, including over 10 million m2 with thermal meters installed; in Yinchuan downtown, over 100 thousand household thermal meters were installed and the area with thermal meters installed was about 20% of total heating area.
 
In Yinchuan’s heat supply systems, besides routine heat exchange stations, there are water mixture heat exchange stations and other forms. In addition, there are many heat supply systems with installed climate compensators, transducers and other relatively advanced VWEs. Advanced equipment and systems can work well and be energy-efficient only if there are corresponding operation management modes and competent operators. In existing heat supply systems for residential buildings, there is almost no building-based heat exchange station in this city.
1.2 Summary on sub-project
Yinchuan International Auto Mall Phase II Commercial & Residential Project is situated in northeast on the downtown of Yinchuan, 200 m from north of crossing point of Qinghe North Street and Zhongshan North Street, at west side of 109 National Road, with advantageous location.
International Auto Mall Phase II Commercial & Residential Project is a comprehensive complex in combination of large shopping mall, supermarket, hotel, commerce, office and residential community with total construction area of 55934 m² including 50524 m² on the ground and 5410m² underground, plot ratio of 3.48 and building density of 22.03%. The project is developed by Ningxia Tonghe Real Estate Development Co., Ltd. with total investment of RMB 380 million.
This building heat exchange station project mainly involves works of commercial buildings 1 and 3 in Phase II. The project period is 2 years. The project was started in December, 2011 and is predicted to be completed and put into use in October, 2013. So far the main body has been completed and indoor and outdoor decorations have been started.
1.3 Project implementers
1.3.1 Developer
Ningxia Tonghe Real Estate Development Co., Ltd., the developer of the project, is a private-run limited liability company incorporated through approval and registration of Administration for Industry and Commerce of Ningxia Hui Autonomous Region within investment of three natural persons. The company is specified in development and sale of real estate and relevant industries with business scope of development and sale of real estate.
The company was incorporated in April 26, 2005 with registered capital of RMB 30 million and total assets of RMB 200 million including net assets of RMB 20 million. The company introduces advanced management methods and mature management experience in real estate industry and is positively engaged in urban infrastructural reconstruction in Yinchuan. One of Company’s projects “Ningxia International Auto Mall” Phase I completed at the end of 2008 has been delivered for use. Currently the company is dedicated to the construction of Ningxia International Auto Mall Phase II Project.
The company has 56 staff in total, including 10 senior management persons, 11 mid-level management persons, 36 technical persons and 6 sales and planning persons all with diplomas of junior colleges and technical secondary schools. the average age of the staff is about 35 years old.
The company is located the northern access to Yinchuan, Ningxia Hui Autonomous Region, less than 3 km from downtown, 18 km from Yinchuan Hedong Airport with convenient traffics, rich resources of water and electricity and favorable policy. Company’s project “Ningxia International Auto Mall”, a governmental investment attraction project, gets great support and a series of preferential policies in favor of growth of enterprise.
The company boasts complete management system, advanced management method, mature market background, industrially well-known land reserve in “Gold Area”, prominent management competence and an outstanding marketing team. With tenet of “building first-class real estate and creating real wealth”, we believe, with support of government and all circles in the society, we’ll make every effort to keep pace with time and enhance internal construction.
1.3.2 Contractor
Ningxia Kanglong Heat Supply Co., Ltd., the contractor of the building heat exchange station plan for this project, is a heat supplier with Third-Class heat supply qualification which was incorporated in August, 2003, through review and approval of Yinchuan Development and Reform Commission, Yinchuan Environmental Protection Bureau, Yinchuan Property Heat Supply Management Office with total heat source capacity of 224 MW, supply scope including areas west of Lijing Street, South of Helanshan Road, East of Minzu North Street and North of Shuangzhuang Road, total planned heated area of 5000 mu and total assets of RMB 46.5 million. The company boasts large modernized boiler room, advanced heat supply equipment, a competent technical team and a scientific complete management system. Now in the company there are 77 employees in total including 13 with diplomas of junior college or above, 5 with titles at middle level or above and 47 dedicated technical persons. All of company’s boiler operators and water quality testers have second-grade or above certificates.
The total occupying area of boiler room is 10716㎡ and the construction area is 4000㎡ including 2280 m2 for boiler room, 1720 m2 for closed coal bunker and reserved area of 10000 m2. Now, the company has two 20t hot water boilers, two 40t boilers and 1 65t boilers and corresponding desulfurization and dust-removal equipment, auxiliary equipment, recycling equipment and so on. Supported with a large closed coal bunker, the total capacity of boilers reaches 185 tons which can heat up total area of 1. 8 million m2. 23 heat exchangers are set in all heat supply areas to warm up 13000 households in the winter.
1.4 Objectives of project
1.4.1 By advanced heat supply technology, the project is a demonstration project for enhancement of heat supply level
1.4.2 Energy efficiency objectives of project
In this project, building energy efficiency standard is 65%. To satisfy this standard, first of all we should determine the building thermal consumption indicators and then thermal transmittance limit of envelope; at last we should conduct thermal calculation with different applicable technologies. The thermal calculation method for building energy efficiency shall be based on “Standards for Residential Building Energy Efficiency in Chilling and Cold Areas” and “Residential Building Energy Efficiency Design Standards”.
Energy efficiency of 65% means further 30% of energy efficiency based on energy efficiency of 50%. Based on building energy efficiency of 65% in Ningxia, 20% of energy savings is still completed by heating system and other 45% is completed by envelopes such as roofs, outer walls, doors and windows, floors above basements and balconies.
1）              building thermal consumption indicators when energy efficiency is 65%
According to Clause 3.04, “Ningxia’s engineering construction standard-“Residential Building Energy Efficiency Design Standard” (DB13 (J) 63-2007), in Yinchuan, the heating duration for calculation is 150 days, the thermal consumption indicator (q_H) of high buildings is 45W/m² and the coal consumption indicator (q_C) is 28kg/m².
2) Determination of thermal transmittance limit of envelope世聯(lián)翻譯公司完成供熱項(xiàng)目英文翻譯
In the thermal consumed for transmission of envelops of heated residence, the thermal consumed for transmission from roofs, outer walls, external window account for about 85%; remaining about 15% is consumed by other parts. Considering technical level and economic reasonability factor in Ningxia and key parts of envelope for energy efficiency-external window, roof, unit-type building frontispiece and others, the thermal transmittance limits of building envelopes are given as below:
Table 1 Requirements of K value of component of envelope in energy efficiency design standard (W/m²·K)

Area No.		Secondary area (Yinchuan)
Roof	>3 floors	0.45
Outer wall	>3 floors	0.60
Unit –type building frontispiece		0.45
External window (Transparent part of balcony door included )		2.50
Core board of lower part of balcony		1.35
Non-heating shared part	Partition	0.98
	Household door	2.00
Floor	Floor exposed to outside	0.40
	Top plate of unheated basement	0.50
Ground	Vicinity ground	0.52
	Non-vicinity ground	0.30

Source: Ningxia’s engineering construction standard-“Residential Building Energy Efficiency Design Standard”
Through adopted energy efficiency technology and measures, this project will greatly enhance energy efficiency of whole building and make thermal transmittance of all wall bodies ≤0.54W/ m²•K and thermal transmittance K of window =2.5W/ m²•K. so far the thermal consumption indicator of community residences is less than 55W/m², meeting the requirements and the weighted average is 52W/m²; the coal consumption indicator is 28kg/m². See table below:
Table 2 Thermal/coal consumption of each building

Building No.	Calculated construction area	Thermal consumption indicator qH (Unit: W/m2)	Coal consumption indicator qC  (Unit: kg/m2)	Subtotal of coal consumption  (Unit: ton)
1#	17715.5	52	32.7
3#	18134	52	32.7
Total	35849.5	52	32.7

 
In comparison with energy efficiency standard of 50% (q_C=32 kg/m²), above 4 kg of standard coal will be saved per m2; if the residential area is 50000 m2, about 200 tons of standard coal will be saved every year; considering the service life is 50 years, total 10000 tons of standard coal will be saved.
 
 
2 Project Plan
2.1 Economic and technical indicators of project
       Table 3 Table of economic and technical indicators of project
 

Item		Indicator
Total area of residential land		49743m2
Total construction area of residential land		50524m2
Including	Ground construction of residence	35849.5 m2
	Ground area of matching shared building	1531 m2
	Ground area of non-vehicle exit of park	79 m2
	Underground construction area of residence	5410m2
	Underground area of matching shared building	910 m2
	Construction area of underground park	5410 m2
Plot ratio		3.27
Building density		12.98%

 
2.2 Basic information of buildings
Table 4 Basic information of each building

Building No.	Ground construction area (㎡)	Underground construction area (㎡)	Building height  (m)	Number of floor on the ground	Number of household	Number of floor underground
1#	17715.49	2742	88.6	17, 5-17 for apartments	234	2
3#	18134	2668	88.6	17, 5-17 for apartments	273	2

 
3 Sub-project Design
3.1 Building energy efficiency design
3.1.1 Building energy efficiency design standard for sub-project
Ningxia’s engineering construction standard-“Residential Building Energy Efficiency Design Standard”
Weather condition:
——average outdoor temperature in winter: -15.0°C
Min outdoor temperature in winter (to determine capacity of heat supply system): - 24°C
Number of heating day in winter: 150 days
Required average indoor temperature: 18°C
 
Requirements on completeness of main building envelope:
——Building thermal consumption indicator: 52W/m²
K value of component of building envelope: see Table 1
 
Requirements for main heat supply system:
——Designed capacity of heat supply system: 55 W/m²
Operation efficiency of Coal-fuelled boiler: 74%
Transmission efficiency of outdoor piping network: 95%
3.1.2 Relevant standards for architectural plan applicable to project: shape coefficient, ratio of window area to wall area:
According to requirements of residential building energy efficiency design standard in Ningxia, this project design conforms to relevant standards for architectural plan. See Tables 5-6 below:  
Table 5: Shape coefficient limit for residential building

Area Code	Building type
	≤3 floors	4-6 floors	7-9 floors	≥10 floors
1	≤0.40	≤0.30		≤0.26
2	≤0.35	≤0.30		≤0.26
3	≤0.35	≤0.30	≤0.26	≤0.24

 
Table 6 Ratio of window area to wall area for different orientations

Orientation	Ratio of window area to wall area
South (By east <45°-by west<30°)	0.40
North (By east ≤45°-by west ≤60°)	0.25
East (By north <45°-by south ≤45°) West (By north <30° -by south ≤60°)	0.30
Horizontal	0.05

 
3.2 Plan, elevation, section and effect drawings of buildings
3.2.1 General plan of project
All of two residential buildings of this project are reinforced concrete short pier shear wall structures
 Local deployment sketch map
Figure 3 Current plan

Figure 5 Overall Plan Effect Drawing
3.2.2 Effect drawing

3.2.3 Plan
3.2.4 Elevation

Figure 13 1# Elevation

3.2.5Section

Figure 14 1# 2-2 section
3.3 Energy efficiency design and calculation of envelope
3.3.1 Composition of envelope
Outer wall type 1: Reinforced concrete (XPS)
 Materials used in each layer of wall body (outside to inside):
 Layer 1: alkaline-resistant fiberglass roving cloth, anti-crack mortar, 20 mm thick
 Layer 2: XPS, 80 mm thick
 Layer 3: Reinforced concrete, 200 mm thick
 Layer 4: Lime mortar, 20 mm thick
Outer wall type 2: Reinforced concrete (east-west) (XPS)
 Materials used in each layer of wall body (outside to inside):
 Layer 1: alkaline-resistant fiberglass roving cloth, anti-crack mortar, 20 mm thick
 Layer 2: XPS, 80 mm thick
 Layer 3: Reinforced concrete, 200 mm thick
 Layer 4: Lime mortar, 20 mm thick
Outer wall type 3: Flat roof (accessible roof) (XPS)
 Materials used in each layer of wall body (outside to inside):
 Layer 1: cement mortar 1, 40 mm thick
 Layer 2: waterproof layer, 4 mm thick
 Layer 3: cement mortar 1, 20 mm thick
 Layer 4: XPS, 80 mm thick
 Layer 5: cement, expanded perlite 4, 20 mm thick
 Layer 6: Reinforced concrete, 120 mm thick
 Layer 7: lime, cement, sand, mortar, 20 mm thick
Splitting wall type 1: Reinforced concrete stair well (XPS)
 Materials used in each layer of wall body (outside to inside):
 Layer 1: alkaline-resistant fiberglass roving cloth, anti-crack mortar, 20 mm thick
 Layer 2: XPS, 30 mm thick
 Layer 3: Reinforced concrete, 200 mm thick
 Layer 4: Lime mortar, 20 mm thick
Splitting wall type 2: Reinforced concrete residence (polyurethane)
 Materials used in each layer of wall body (outside to inside):
 Layer 1: alkaline-resistant fiberglass roving cloth, anti-crack mortar, 20 mm thick
 Layer 2: EPS thermal insulation mortar, 40 mm thick
 Layer 3: Reinforced concrete, 200 mm thick
 Layer 4: Lime mortar, 40 mm thick
Roof type 1: flat roof (accessible roof) (XPS)
 Materials used in each layer of roof (outside to inside):
 Layer 1: cement mortar 1, 40 mm thick
 Layer 2: waterproof layer, 4 mm thick
 Layer 3: cement mortar 1, 20 mm thick
 Layer 4: XPS, 80 mm thick
 Layer 5: cement, expanded perlite 4, 20 mm thick
 Layer 6: Reinforced concrete, 120 mm thick
 Layer 7: lime, cement, sand, mortar, 20 mm thick
Door type 1: multifunctional external door
Window type 1: PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (air 12 mm)
 Thermal transmittance: 2.30 W/ (㎡.K)
Window -type 2: PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (argon gas 9 mm)
 Thermal transmittance: 2.20 W/ (㎡.K)
Floor board type 1: reinforcing steel concrete board (Cement polyphenyl board)
Floor board type 2: Overhead and projected board whose bottom exposed to outside (XPS)
 
3.3.2 Shape coefficient
Table 7 Shape coefficient

Area of building appearance
Building volume (ground)
Shape coefficient	0.12
Provision on shape coefficient	In Yinchuan (Secondary area), when number of floor ≥10, Shape coefficient ≤0.26
Conclusion	Compliant

3.3.3 Outer Walls
3.3.3.1 Outer wall main part thermal calculation: 
Table 8 Outer wall type 1: Reinforced concrete (XPS)

Materials for each floor	Thickness mm		Thermal conductivity W/ ( m.K)		Correction factor	Corrected thermal conductivity / ( m.K)	Heat storage coefficient SW/ ( m2.k)		Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
alkaline-resistant fiberglass roving cloth, anti-crack mortar	20		0.93		1.00	0.93	11.37		11.37	0.022	0.24
XPS	80		0.03		1.10	0.03	0.36		0.40	2.424	0.96
Reinforced concrete	200		1.74		1.00	1.74	17.20		17.20	0.115	1.98
Lime mortar	20		0.81		1.00	0.81	10.07		10.07	0.025	0.25
Total	320		－		－	－	－		－	2.586	3.43
resistance of heat transfer of main body of wall (m2.K) /W				R0 = Ri+∑R+Re = 2.746				Note: Ri is 0.11, Re is 0.05
thermal transmittance of main body of wall W/ ( m2.K)		K = 1/R0 = 0.36

 
 
Table 9 Outer wall type 2: Reinforced concrete (east-west) (XPS)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)		Heat storage coefficient SW/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
alkaline-resistant fiberglass roving cloth, anti-crack mortar	20	0.93	1.00	0.93		11.37	11.37	0.022	0.24
XPS	80	0.03	1.10	0.03		0.36	0.40	2.424	0.96
Reinforced concrete	200	1.74	1.00	1.74		17.20	17.20	0.115	1.98
Lime mortar	20	0.81	1.00	0.81		10.07	10.07	0.025	0.25
Total	320	－	－	－		－	－	2.586	3.43
resistance of heat transfer of main body of wall (m2.K) /W			R0 = Ri+∑R+Re = 2.746				Note: Ri is 0.11, Re is 0.05
thermal transmittance of main body of wall W/ ( m2.K)					K = 1/R0 = 0.36

 
 
3.3.3.2 Thermal calculation of main part of thermal bridge: 
No thermal bridge
3.3.3.3 Average thermal parameter calculation of outer wall
Table 10 Outer wall average thermal parameter calculation

Structure type	Main body of wall		Column	Girder	Lintel
Area (m2)	8829.01		－	－	－
Percentage (%)	100.00		－	－	－
thermal transmittance (W/ ( m2.K) )	0.36		－	－	－
Thermal inertia indicator	3.43		－	－	－
Average thermal transmittance of outer wall (W/ ( m2.K) )		0.36
Average thermal inertia indicator of outer wall		3.43
Provisions in standard	In Yinchuan (Secondary area), when number of floor ≥10, K≤0.60
Conclusion	Compliant

 
 
Table 11 East-oriented wall body: (unit-type building frontispiece)

Structure type	Main body of wall		Column	Girder	Lintel
Area (m2)	2205.95		－	－	－
Percentage (%)	100.00		－	－	－
thermal transmittance (W/ ( m2.K) )	0.36		－	－	－
Thermal inertia indicator	3.43		－	－	－
Average thermal transmittance of east-oriented outer wall (W/ ( m2.K) )		0.36
Average thermal inertia indicator of east oriented outer wall		3.43
Provision in standard		In Yinchuan (secondary area), K≤0.45
Conclusion		Compliant

 
 
 
Table 12 West –oriented wall boy: (unit-type building frontispiece)

Structure type	Main body of wall		Column	Girder	Lintel
Area (m2)	2417.42		－	－	－
Percentage (%)	100.00		－	－	－
thermal transmittance (W/ ( m2.K) )	0.36		－	－	－
Thermal inertia indicator	3.43		－	－	－
Average thermal transmittance of west-oriented outer wall (W/ ( m2.K) )		0.36
Average thermal inertia indicator of west-oriented outer wall		3.43
Provision in the standard		In Yinchuan (secondary area), K≤0.45
Conclusion		Compliant

 
Table 13 South-oriented wall body

Structure type	Main body of wall		Column	Girder	Lintel
Area (m2)	2204.83		－	－	－
Percentage (%)	100.00		－	－	－
thermal transmittance (W/ ( m2.K) )	0.36		－	－	－
Thermal inertia indicator	3.43		－	－	－
Average thermal transmittance of south-oriented outer wall (W/ ( m2.K) )		0.36
Average thermal inertia indicator of south-oriented outer wall		3.43

 
Table 14 North-oriented wall body

Structure type	Main body of wall		Column	Girder	Lintel
Area (m2)	2000.81		－	－	－
Percentage (%)	100.00		－	－	－
thermal transmittance (W/ ( m2.K) )	0.36		－	－	－
Thermal inertia indicator	3.43		－	－	－
Average thermal transmittance of north-oriented outer wall (W/ ( m2.K) )		0.36
Average thermal inertia indicator of north-oriented outer wall		3.43

3.3.4 Separating wall
Table 15 Splitting wall type 1: Reinforced concrete stair well (XPS)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient SW/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
alkaline-resistant fiberglass roving cloth, anti-crack mortar	20	0.93	1.00	0.93	11.37	11.37	0.022	0.24
XPS	30	0.03	1.10	0.03	0.36	0.40	0.909	0.36
Reinforced concrete	200	1.74	1.00	1.74	17.20	17.20	0.115	1.98
Lime mortar	20	0.81	1.00	0.81	10.07	10.07	0.025	0.25
Total	270	－	－	－	－	－	1.071	2.83
resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Ri = 1.291				Note: Ri is 0.11
thermal transmittance W/ ( m2.K)		K = 1/R0 = 0.77
Provision in the standard		In Yinchuan (secondary area), K≤1.60
Conclusion		Compliant

 
Table 16 Splitting wall type 2: Reinforced concrete residence (polyurethane)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient SW/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
alkaline-resistant fiberglass roving cloth, anti-crack mortar	20	0.93	1.00	0.93	11.37	11.37	0.022	0.24
EPS thermal insulation mortar	40	0.06	1.30	0.08	0.95	1.23	0.522	0.64
Reinforced concrete	200	1.74	1.00	1.74	17.20	17.20	0.115	1.98
Lime mortar	40	0.81	1.00	0.81	10.07	10.07	0.049	0.50
Total	300	－	－	－	－	－	0.708	3.36
resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Ri = 0.928				Note: Ri is 0.11
thermal transmittance W/ ( m2.K)		K = 1/R0 = 1.08
Provision in the standard		In Yinchuan (secondary area), K≤1.60
Conclusion		Compliant

3.3.5 Deformation joint
No deformation joint
3.3.6 Seismic joint
No seismic joint
3.3.7 Roofs
Table 17 Roof type 1: Flat floor (accessible roof) (XPS)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient S W/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
cement mortar 1	40	0.93	1.00	0.93	11.37	11.37	0.043	0.49
waterproof layer	4	0.17	1.00	0.17	3.33	3.33	0.024	0.08
cement mortar 1	20	0.93	1.00	0.93	11.37	11.37	0.022	0.24
XPS	80	0.03	1.30	0.04	0.36	0.47	2.051	0.96
cement, expanded perlite 4	20	0.18	1.50	0.27	2.49	3.74	0.074	0.28
Reinforced concrete	120	1.74	1.00	1.74	17.20	17.20	0.069	1.19
lime, cement, sand, mortar	20	0.87	1.00	0.87	10.75	10.75	0.023	0.25
Total	304	－	－	－	－	－	2.306	3.49
resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Re = 2.466				Note: Ri is 0.11, Re is 0.05
thermal transmittance W/ ( m2.K)		K = 1/R0 = 0.41
Provision in the standard		In Yinchuan (secondary area), when number of floor of building ≥10, K≤0.45
Conclusion		Compliant

 
3.3.8 Separating floor boards
Table 18 Standard floor board type 1: overhead and projected floor board with outside exposed underside (XPS)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient S W/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
Gravels, pebble concrete1	50	1.51	1.00	1.51	15.36	15.36	0.033	0.51
Styrofoam	30	0.04	1.00	0.04	0.36	0.36	0.714	0.26
Reinforced concrete	110	1.74	1.00	1.74	17.20	17.20	0.063	1.09
lime, cement, sand, mortar	20	0.87	1.00	0.87	10.75	10.75	0.023	0.25
XPS	50	0.03	1.10	0.03	0.36	0.40	1.515	0.60
Rendering coat	0	－	－	－	－	－	－	－
Total	260	－	－	－	－	－	2.348	2.71
resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Ri = 2.568				Note: Ri is 0.11
thermal transmittance W/ ( m2.K)		K = 1/R0 = 0.39
Provision in the standard		In Yinchuan (secondary area), K≤1.20
Conclusion		Compliant

 
Table 19 Standard floor board type 2: reinforcing steel concrete board (Cement polyphenyl board)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient S W/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
cement mortar 1	20	0.93	1.00	0.93	11.37	11.37	0.022	0.24
Gravels, pebble concrete1	50	1.51	1.00	1.51	15.36	15.36	0.033	0.51
Styrofoam	30	0.04	1.00	0.04	0.36	0.36	0.714	0.26
Reinforced concrete	110	1.74	1.00	1.74	17.20	17.20	0.063	1.09
lime, cement, sand, mortar	20	0.87	1.20	1.04	10.75	12.90	0.019	0.25
Total	230	－	－	－	－	－	0.851	2.35
resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Ri = 1.071				Note: Ri is 0.11
thermal transmittance W/ ( m2.K)		K = 1/R0 = 0.93
Provision in the standard		In Yinchuan (secondary area), K≤1.20
Conclusion		Compliant

 
3.3.9 Floor
3.3.9.1 Floor exposed to outside (overhead): 
No projected floor board
3.3.9.2 Floor above unheated basement: 
Table 20 Type 1 of floor above unheated basement: overhead and projected floor board exposed to outside (XPS)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient S W/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
Gravels, pebble concrete 1	50	1.51	1.00	1.51	15.36	15.36	0.033	0.51
Styrofoam	30	0.04	1.00	0.04	0.36	0.36	0.714	0.26
Reinforced concrete	110	1.74	1.00	1.74	17.20	17.20	0.063	1.09
lime, cement, sand, mortar	20	0.87	1.00	0.87	10.75	10.75	0.023	0.25
XPS	50	0.03	1.10	0.03	0.36	0.40	1.515	0.60
Rendering coat	0	－	－	－	－	－	－	－
Total	260	－	－	－	－	－	2.348	2.71
resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Ri = 2.568				Note: Ri is 0.11
thermal transmittance W/ ( m2.K)		K = 1/R0 = 0.39
Provision in the standard		In Yinchuan (secondary area), K≤0.50
Conclusion		Compliant

 
3.3.10 Closed balcony
3.3.10.1 Closed balcony roof: 
 
Table 21 Closed balcony roof type 1: Flat roof (accessible roof) (XPS)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient S W/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
Cement mortar 1	40	0.93	1.00	0.93	11.37	11.37	0.043	0.49
Waterproof layer	4	0.17	1.00	0.17	3.33	3.33	0.024	0.08
Cement mortar 1	20	0.93	1.00	0.93	11.37	11.37	0.022	0.24
XPS	80	0.03	1.30	0.04	0.36	0.47	2.051	0.96
Cement, expanded perlite 4	20	0.18	1.50	0.27	2.49	3.74	0.074	0.28
Reinforced concrete	120	1.74	1.00	1.74	17.20	17.20	0.069	1.19
Lime, cement, sand, mortar	20	0.87	1.00	0.87	10.75	10.75	0.023	0.25
Total	304	－	－	－	－	－	2.306	3.49
Resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Re = 2.466				Note: Ri is 0.11, Re is 0.05
Thermal transmittance W/ ( m2.K)		K = 1/R0 = 0.41

 
3.3.11 Stair wells
3.3.11.1 Partitions of unheated stair wells: 
Table 26 Type 1 of partition of unheated stair well: Reinforced concrete stair well (XPS)

Materials for each floor	Thickness mm	Thermal conductivity W/ ( m.K)	Correction factor	Corrected thermal conductivity W/ ( m.K)	Heat storage coefficient S W/ ( m2.k)	Corrected heat storage coefficient S W/ ( m2.k)	Thermal resistance R  (m2.K) /W	Thermal inertia indicator D=R.S
Alkaline-resistant fiberglass roving Cloth, anti-crack mortar	20	0.93	1.00	0.93	11.37	11.37	0.022	0.24
XPS	30	0.03	1.10	0.03	0.36	0.40	0.909	0.36
Reinforced concrete	200	1.74	1.00	1.74	17.20	17.20	0.115	1.98
Lime mortar	20	0.81	1.00	0.81	10.07	10.07	0.025	0.25
Total	270	－	－	－	－	－	1.071	2.83
Resistance of heat transfer (m2.K) /W		R0 = Ri+∑R+Ri = 1.291				Note: Ri is 0.11
Thermal transmittance W/ ( m2.K)		K = 1/R0 = 0.78
Provision in the standard		In Yinchuan (secondary area), K≤0.98
Conclusion		Compliant

 
 
3.3.11.2 External door of unheated stair well: 
Table 27 External door of unheated stair well

External door type	thermal transmittance	Provision in the standard	Conclusion
multifunctional external door	1.50	In Yinchuan (secondary area), K≤2.00	Compliant

3.3.12 External window (external and internal balcony windows included)
3.3.12.1 List of external window types: 
Table 28 List of external window types

Structure type	thermal transmittance	Provision in the standard	Conclusion
PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (air 12 mm)	2.30	In Yinchuan (secondary area), K≤2.50	Compliant
PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (argon gas 9 mm)	2.20	In Yinchuan (secondary area), K≤2.50	Compliant

 
3.3.12.2 Calculation of ratio of window area to wall area: 
 
 
Table 29 East:

Outer wall area (m2)	External window area (m2)	Ratio of window area to wall area in each orientation	Thermal transmittance
2876	1158	0.4	2.25
Provision in the standard		Ratio of window area to wall area≤0.30
Conclusion		Incompliant

 
Table 30 West:

Outer wall area (m2)	External window area (m2)	Ratio of window area to wall area in each orientation	Thermal transmittance
2876	986	0.34	2.22
Provision in the standard		Ratio of window area to wall area≤0.30
Conclusion		Incompliant

 
Table 31 South:

Outer wall area (m2)	External window area (m2)	Ratio of window area to wall area in each orientation	thermal transmittance
4036	1985	0.49	2.27
Provision in the standard		Ratio of window area to wall area ≤0.40
Conclusion		Incompliant

 
Table 32 North:

Outer wall area (m2)	External window area (m2)	Ratio of window area to wall area in each orientation	thermal transmittance
4036	1758	0.43	2.30
Provision in the standard		Ratio of window area to wall area≤0.25
Conclusion		Compliant

 
3.3.12.3 Determination on air tightness degree of external window and balcony window: 
Table 33 Determination on air tightness degree of external window and balcony window

air tightness degree	Provision in the standard	Conclusion
Ⅱ (degree 4)	air tightness degree shall be degree 4 at least	Compliant

 
3.3.12.4 Statistics of classification of external windows in terms of orientation: 
Closed balcony window: None
Open balcony window: None
No balcony window:
Table 34 Statistics of classification of external windows in terms of orientation

Orientation	Structure	Area (m2)
East	PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (air 12 mm)	50.40
East	PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (argon gas 9 mm)	24.02
South	PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (air 12 mm)	1462.20
South	PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (argon gas 9 mm)	388.40
West	PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (air 12 mm)	46.08
West	PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (argon gas 9 mm)	62.75
North	PA insulated aluminum alloy, radiance ≤0.25 Low-E insulating glass (air 12 mm)	1038.20

 
3.3.13 Ground
1) Vicinity ground:
No vicinity ground
2) Non-vicinity ground:
 No non-vicinity ground
3.3.14 Conclusion on architectural thermal design
(1) Shape coefficient is incompliant to standard.
(2) Outer walls are compliant to standard.
(3) Roofs are compliant to standard.
(4) External windows are incompliant to standard.
(5) External walls are compliant to standard.
(6) Floor boards are compliant to standard.
(7) Upper floors of unheated basements are compliant to standard.
(8) Partitions of unheated stair wells are compliant to standard.
(9) External doors of unheated stair wells are compliant to standard.
(10) Core boards of the lower part of balcony doors are compliant to standard.
(11) Closed balconies are compliant to standard。
Through calculation, the work cannot satisfy relevant requirements of architectural thermal design in “Residential Building Energy Efficiency Design Standard in Ningxia” (DB13 (J) 63-2007).
3.3.16 Building thermal consumption indicators and heating -purposed coal consumption indicators
3.3.16.1 Parameters for calculation of building thermal consumption indicators and heating -purposed coal consumption indicators: 
Table 38 Thermal transmittance and consumption parameters of unit construction area via envelope:

Calculation item			Εi		Ki		Fi		ε·K·F
Roof		Horizontal	0.94		0.41		1362.7		525.18
Outer wall	With closed balcony	East	0.70		0.36		2876
		South	0.50		0.36		4036
		West	0.89		0.36		2876
		North	0.90		0.36		4036
	Without closed balcony	East	0.89		0.36		2876		921.5
		South	0.78		0.36		4036		1133
		West	0.89		0.36		2876		921.5
		North	0.93		0.36		4036		1395
Walls at both sides of expansion joint/settlement joint			0.30		－		－		－
Walls at both sides of seismic joint			0.70		－		－		－
external window	With closed balcony	East	0.57		－		－		－
		South	0.18		－		－		－
		West	0.57		－		－		－
		North	0.76		－		－		－
	With open balcony	East	0.80		－		－		－
		South	0.65		－		－		－
		West	0.80		－		－		－
		North	0.89		－		－		－
	Without balcony	East	0.40		2.25		1158		1042
		South	0.49		2.27		1985		2207
		West	0.34		2.22		986		750
		North	0.43		2.30		1758		1738.67
Core board of lower part of balcony		East	0.89		-		-		-
		South		0.78		－		－		－
		West		0.89		－		－		－
		North		0.93		-		-		-
Unheated stair well		Partition		0.50		0.78		3557.51		1387.43
		External door		0.50		1.50		406.08		304.56
Floor		Outside-exposed floor		1.00		－		－		－
		Floor above unheated basement		0.75		0.39		1362.7		398.5
Ground		vicinity ground		1.00		－		349.50		－
		Non-vicinity ground		1.00		－		215.52		－
Σ				—		—		—		12680

Note: 1. For unheated stair well, roof area is the area minus stair well area.
2. For unheated stair well, outer wall area is the area minus stair well area.
3. For unheated stair well, ground area is the area minus stair well area.
4. For unheated stair well, calculate the partition area of stair well.
5. For unheated stair well, calculate the area of external door of stair well.
6. For unheated basement, calculate the area of floor above the basement.
3.3.16.2 Calculation of building thermal consumption indicators and heating -purposed coal consumption indicators: 
1）The thermal consumed for transmission of unit construction area vie envelope:

＝ (35.00 － (-15.00) ) × (12680) ／ 13824
＝45.86 (W/m²)
Note: in the formula, the data shall be selected according to Clause 4.3.3 of “Standards for Energy-efficient Residential Building”.
 
2) Heat consumed for air penetration in unit construction area:

＝ (35.00 － (-15.00) ) × (0.28 × 1.31 × 0.50 ×15075) ／ 13824
＝ 10.00 (W/m²)
 
3) Heat gained in unit construction area of building:

 
4) Building thermal consumption indicators:

＝ 45.86 ＋ 10.00 － 3.8
＝52 (W/m²)
 
5) Building heating coal consumption indicator:

＝ 24 ×150 × 52／ 8140.00 × 0.95 × 0.74
＝ 32.7 (kg/m²)
Note: in the formula, the data shall be selected according to Clause 4.3.5 of “Standards for Energy-efficient Residential Building” (DB13 (J) 63-2007).
3.3.16.3 Calculation results of building thermal consumption indicators and heating -purposed coal consumption indicators: 
Table 39 Calculation result

Indicator type	Thermal consumption indicator	Heating coal consumption indicator
Indicator limit	55	38
Actual calculated value	52	32.7

 
3.3.17 Conclusion on building energy consumption
According to judgment based on the calculation of building thermal consumption indicators and heating -purposed coal consumption indicators, the thermal consumption of the work is lower than the indicator limit, the heating coal consumption indicator is lower than the indicator limit, and all of air tightness degree of buildings, the thermal transmittances of roofs, unit-type building frontispieces, floor board or floor above unheated basement, separating walls and separating floor boards conform to limits in the standard. Therefore the project completely meets requirements of “Residential Building Energy Efficiency Design Standard in Ningxia” for energy –efficient building.
 
3.4 Indoor heating system (Buildings 1~3)
This system is residential hot-water centralized heating system in the form of household –based metering, featuring low-temperature hot-water floor radiation heating. The heating pipes are silane cross-linked polyethylene pipes (PE-Xb), with use condition of Class 4, pressure bearing of 0.80MPa. This S4 piping has outer diameter of De 32 and wall thickness of 3.6. The closing valve, filter and thermal meter are set on incoming water supply pipe of each household in turn; the digital locked balance valve is set on turn pipe: SPF15T-16.
1)                Heating medium: 50/40°C hot water is supplied by centralized community heat exchange station and the system pressure stabilization is completed in the station.
 
2) Division of heating system: 5-10 F is lower area, 11-17 F is higher area and 1-4 F is commercial independent heat supply.
3) Household control: a floor temperature control valve is set on the water supply pipe in front of sub-catchment in the entrance of household system to realize household –based automatic temperature control; a ball valve is set on the water supply pipe in each loop of the sub-catchment; a manual control valve is set on the return pipe to control water supply in each loop.
4) Household thermal metering: ultrasonic meter is adopted in this demonstration project. To enhance reliability of system, all thermal meters are imported ultrasonic meters to ensure quality of metering. The ultrasonic thermal meters are installed in equipment wells of stair wells of residential buildings in the form of household metering.
 
Figure 1Plan of heating system for buildings 3~5
 

Intake side  Temperature metering ball valve  Flowmeter
Temperature probe connected with cable  Control cable  Integrator
Return side  Valve Temperature probe connected with cable  Temperature metering ball valve 
Figure 16: sketch map of ultrasonic household thermal meter
2WR6 Installation Sketch Map
 

Figure 17 3~5 Heating system drawing
3.5 Design of building heat exchange stations
3.5.1 Community heating plan
In existing design, a centralized local heat exchange station is built on B1, underground park, and the primary network of this station is a part of municipal utility heat supply network and each of secondary network is connected with the inlet of heating system of a building.
As shown in the drawing, the heating system in commercial & residential community of International Auto Mall Phase II is a system featuring dual-loop, dual-tube direct return parallel, low-temperature hot –water floor radiation heating. In existing design plan, a community heat exchange station is set in the middle of B1, underground park, to be reasonable for 56000 –m2 heated area of high building in Phase II. The heat exchange station of the community is set in B1, underground park, all of secondary network pipes (2 for higher loop and 2 for lower loop) of the station are overhead in intake of heating system of each building, laid together with fire pipes, water supply and drainage pipes, ventilation pipes and electric bridge. There are a large number of thick secondary network pipes, occupying a large upper space of the basement.
According to actual conditions on site, the community is heated up with advanced building heat exchange stations. The plan involves following aspects:
1)                  A heat exchange station (building station for short) is built in each building and loops are set according to specific conditions of the building. There are two building stations to be set with 5 heat supply units in total.
2) Heat supply primary piping network is laid to each building heat exchange station along the ceiling of park and the supply/return temperature of primary network is 90/60℃, 1.0MPa.
3.5.2 Technical advantages and demonstrations for building heat exchange stations

Figure 18 Appearance of building heat exchanger unit
3.5.3 Designed thermal load
 International Auto Mall Phase II is a commercial & residential high building with 17 floors and total construction area of 55934m².
The heating system inside the building is simple, divided into higher area and lower area in terms of height of the space inside the building; in terms of purpose, the system is divided into heating (for residential users), central air-conditions, new air load (for commercial users) and heaters (for commercial users). The three heat supply forms require different water supply parameters; in terms of height of space inside the building, the system is divided into higher area and lower area. The thermal loads of each building are shown as below
 
Table 40 Thermal loads of building

No.	Building No.	Underground bunker part	Residential part				Thermal load (KW)	Calculated heated area (m2)
		Hot air curtain 50/40℃	Lower area floor heating 50/40℃		Higher area floor heating 50/40℃
		Thermal load (KW)	Thermal load (KW)	Area (m2)	Thermal load (KW)	Area (m2)	Subtotal	Subtotal
1	A1#	0.00	496	9539	425.18	8176.5	586.34	17715.5
2	A3#	0.00	516.15	9926	442.4	8508	588.2	18434
3	Total		1012.1	19465	867.5	16684.5	5348.99	36149.5

3.5.4 Piping network design
According heat piping network overall plan of the company, in the design of primary piping network, branches DN 200 and DN 150 will derive from branch DN 200 in the front of the building to underground park and then be laid to each building heat exchange station along the ceiling of the park in overhead form (reducing during laying). The work of primary piping network is shown as below:
Table 41 Work of primary piping network

No.	Diameter (mm)	Length of pipe ditch  (m)
1	Directly buried pipe DN80	147
2	Directly buried pipe DN100	92
3	Directly buried pipe DN125	58
4	Directly buried pipe DN150	246
5	Directly buried pipe DN200	58
Total		562

 

 

Figure 19 Deployment of primary network and building stations
3.5.5 Design of building heat exchange station

3.5.5.1 Summary on building heat exchange stations

According to thermal load, the project may set two building heat exchange stations. In the community, building 1 is a single building, not above underground park and the wall body of the basement is main wall without appropriate place for station, plus the building close to station 2, so the heating system of this building is connected with the heat exchange station of the closest building 2.
Every building station has 2 heat exchanger units supplying heat for higher area and lower area respectively.
Table 42 Conditions of building heat exchange stations

building heat exchange station	Loop design	Thermal load (KW)	Area (m2)	Loop scale (KW)
1#	Lower-loop floor heating 50/40℃	496	9539
	Higher –loop floor heating 50/40℃	425	8176.5
3#	Lower-loop floor heating 50/40℃	516	9926
	Higher –loop floor heating 50/40℃	442	8508

 

3.5.5.2 Selection of model of equipment for building heat exchange stations

Process: considering that underground building heat exchange station is limited in space, we suggest heat supply unit be adopted to save space. Besides water tanks and water softening equipment, there are 1 primary network filter and 1 secondary network filter, 1 plate heat exchanger, 2 circulating pumps (one standby included) and 2 supply pumps (one standby included). Among them, main equipment including circulating pumps and supply pumps are imported products.
Automatic control: for heat supply unit, electric cabinets and control cabinets are matched, including instrumental test devices, such as pressure, temperature and flow (thermal) metering devices; control equipment including electric control valve, transducer (installed in electric cabinet), solenoid valve, etc. all of them are integrated in heat supply unit. Among them electric control valve, transducer, solenoid valve, flowmeter, pressure temperature sensor and PLC controller are imported products.
Selection of models of equipment for each building heat exchange station is as below:

 
Table 43 Main process equipment of heat exchange station of building 1
 

No.	Name	Unit	Quantity	Remarks
Shared equipment for each loop
1	Water tank	Unit	1	V=3 m3
2	QTRH	Unit	1	G=3t/h continuous inlet
Lower –loop heat exchanger unit
Primary side	Filter	Unit	1	DN100
	Ball valve	Set	2	DN100
	Butterfly valve	Set	2	DN100
	Thermometer	Piece	6	0~150℃
	Pressure gauge	Unit	6	0~1.6MPa
	Electric control valve	Set	1	DN80
	Ultrasonic flowmeter	Set	1	DN100
	Temperature sensor	Unit	2	0~150℃
	Pressure sensor	Unit	2	0~1.6MPa
Secondary side	Filter	Unit	1	DN200
	Ball valve	Set	2	DN200
	Butterfly valve	Set	2	DN150
	Butterfly valve	Set	2	DN200
	Thermometer	Piece	4	0~100℃
	Pressure gauge	Unit	12	0~1.0MPa
	Ultrasonic flowmeter	Set	1	DN200
	Temperature sensor	Unit	2	0~100℃
	Pressure sensor	Unit	2	0~1.0MPa
	Solenoid valve	Unit	1	DN25
	Circulating pump	Unit	2	G=89m3/h H=28m P=7.5KW
	Transducer	Unit	1	P=7.5KW
Filling side	Ball valve	Set	4	DN25
	Check valve	Set	2	DN25
	Ultrasonic flowmeter	Set	1	DN25
	Make-up pump	Unit	2	G=4m3/h H=66m P=3KW
	Transducer	Unit	1	P=3KW
Shared part	Plate heat exchanger	Set	1	Heat exchange areaA=17m2
	Electric cabinet	Unit	1
	Control cabinet	Unit	1	Control system equipment included
	Frequency conversion cabinet	Unit	1
	Outdoor temperature sensor	Unit	1	-50°C~50℃
3. upper-loop heat exchanger unit
Primary side	Filter	Unit	1	DN100
	Ball valve	Set	2	DN100
	Butterfly valve	Set	2	DN100
	Thermometer	Piece	6	0~150℃
	Pressure gauge	Unit	6	0~1.6MPa
	Electric control valve	Set	1	DN80
	Ultrasonic flowmeter	Set	1	DN100
	Temperature sensor	Unit	2	0~150℃
	Pressure sensor	Unit	2	0~1.6MPa
Secondary side	Filter	Unit	1	DN200
	Ball valve	Set	2	DN200
	Butterfly valve	Set	2	DN150
	Butterfly valve	Set	4	DN200
	Thermometer	Piece	4	0~100℃
	Pressure gauge	Unit	12	0~1.6MPa
	Ultrasonic flowmeter	Set	1	DN200
	Temperature sensor	Unit	2	0~100℃
	Pressure sensor	Unit	2	0~1.6MPa
	Solenoid valve	Unit	1	DN25
	Circulating pump	Unit	2	G=89m3/h H=16m P=7.5KW
	Transducer	Unit	1	P=7.5KW
Filling side	Ball valve	Set	4	DN25
	Check valve	Set	2	DN25
	Ultrasonic flowmeter	Set	1	DN25
	Make-up pump	Unit	2	G=4m3/h H=99m P=1.1KW
	Transducer	Unit	1	P=1.1KW
Shared part	Plate heat exchanger	Set	1	Heat exchange areaA=17m2
	Electric cabinet	Unit	1
	Control cabinet	Unit	1	Control system equipment included
	Frequency conversion cabinet	Unit	1
	Outdoor temperature sensor	Unit	1	-50°C~50℃

 
Table 44 Main process equipment of heat exchange station of building 3

No.	Name	Unit	Quantity	Remarks
Shared equipment of each loop
1	Water tank	Unit	1	V=3 m3
2	QTRH	Unit	1	G=3t/h continuous inlet
Lower loop heat exchanger unit
Primary side	Filter	Unit	1	DN80
	Ball valve	Set	2	DN80
	Butterfly valve	Set	2	DN80
	Thermometer	Piece	6	0~150℃
	Pressure gauge	Unit	6	0~1.6MPa
	Electric control valve	Set	1	DN65
	Ultrasonic flowmeter	Set	1	DN80
	Temperature sensor	Unit	2	0~150℃
	Pressure sensor	Unit	2	0~1.6MPa
Secondary side	Filter	Unit	1	DN150
	Ball valve	Set	2	DN150
	Butterfly valve	Set	2	DN150
	Butterfly valve	Set	2	DN100
	Thermometer	Piece	4	0~100℃
	Pressure gauge	Unit	12	0~1.0MPa
	Ultrasonic flowmeter	Set	1	DN150
	Temperature sensor	Unit	2	0~100℃
	Pressure sensor	Unit	2	0~1.0MPa
	Solenoid valve	Unit	1	DN25
	Circulating pump	Unit	2	G=45m3/h H=28m P=4KW
	Transducer	Unit	1	P=4KW
Filling side	Ball valve	Set	4	DN25
	Check valve	Set	2	DN25
	Ultrasonic flowmeter	Set	1	DN25
	Make-up pump	Unit	2	G=2m3/h H=72m P=2.2KW
	Transducer	Unit	1	P=2.2KW
Shared part	Plate heat exchanger	Set	1	Heat exchange areaA=17m2
	Electric cabinet	Unit	1
	Control cabinet	Unit	1	Control system equipment included
	Frequency conversion cabinet	Unit	1
	Outdoor temperature sensor	Unit	1	-50°C~50℃
3 Upper-loop heat exchanger unit
Primary side	Filter	Unit	1	DN80
	Ball valve	Set	2	DN80
	Butterfly valve	Set	2	DN80
	Thermometer	Piece	6	0~150℃
	Pressure gauge	Unit	6	0~1.6MPa
	Electric control valve	Set	1	DN65
	Ultrasonic flowmeter	Set	1	DN80
	Temperature sensor	Unit	2	0~150℃
	Pressure sensor	Unit	2	0~1.6MPa
Secondary side	Filter	Unit	1	DN150
	Ball valve	Set	2	DN150
	Butterfly valve	Set	2	DN150
	Butterfly valve	Set	2	DN100
	Thermometer	Piece	4	0~100℃
	Pressure gauge	Unit	12	0~1.6MPa
	Ultrasonic flowmeter	Set	1	DN150
	Temperature sensor	Unit	2	0~100℃
	Pressure sensor	Unit	2	0~1.6MPa
	Solenoid valve	Unit	1	DN25
	Circulating pump	Unit	2	G=45m3/h H=28m P=4KW
	Transducer	Unit	1	P=4KW
Filling side	Ball valve	Set	4	DN25
	Check valve	Set	2	DN25
	Ultrasonic flowmeter	Set	1	DN25
	Make-up pump	Unit	2	G=2m3/h H=108m P=3KW
	Transducer	Unit	1	P=3KW
Sharing parts	Plate heat exchanger	Set	1	Heat exchange area A=17m2
	Electric cabinet	Unit	1
	Control cabinet	Unit	1
	Frequency conversion cabinet	Unit	1	Equipment with control system
	Outdoor temperature sensor	Set	1
				-50°C~50℃

 

Figure 21: process system of heat exchange station of building 3
v

 
 3.5.6 Energy efficient measures
3.5.7 Control measures
3.5.7.1 Fundamentals of automatic control of building heat exchange station

3.5.7.2 Control measures of building heat exchange station

4 Incremental cost and incremental income of GEF project
4.1 Incremental cost of heated part
Table 46 Comparison between heating system design baseline and demonstration part of GEF project

Component	Baseline	GEF
Household thermal meter, floor heating temperature control valve	Most of household meters are made in China; the floor radiation heating system is under control of manual valve	Imported ultrasonic meter, imported floor heating temperature control valve
building heat exchange station	None	9 building heat exchange stations
Micro-computer heating network monitor system	Manual observation and control	Micro-computer heating network monitor system

 
4.2 Incremental cost of GEF project
Table 47 GEF incremental cost

Indoor heating part	Quantity	Unit price	incremental cost	GEF incremental cost	GEF subsidy
			(CNY)	(USD)	(USD)
	Piece	RMB/piece	RMB	Exchange rate: 1: 6.18	Exchange rate: 1: 6.18
Imported floor heating temperature control valve	507	1050	532350	86140.8	25842.2
Imported ultrasonic household thermal meter	507	1600	811200	131262.1	39378.6
Data collector (exchanger included)	8	11000	88000	14239.5	4271.8
Database server 3850	2	100000	200000	32362.5	9708.7
Web release server 3650	1	70000	70000	11326.9	3398.1
Data collection server 3650	1	70000	70000	11326.9	3398.1
Exchanger	1	20000	20000	3236.2	970.9
Router	1	12000	12000	1941.7	582.5
8-hour computer room UPS power supply	1	20000	20000	3236.2	970.9
Display	2	1500	3000	485.4	145.6
Database software sq12008	1	40000	40000	6472.5	1941.7
Hot standby software	1	20000	20000	3236.2	970.9
Metering data collection software	1	160000	160000	25890.0	12945.0
Meter data analysis software	1	200000	200000	32362.5	16181.2
Firewall	1	50000	50000	8090.6	2427.2
Windows 2008	1	20000	20000	3236.2	970.9
Subtotal			2316550	374846.3	124104.4
Building parts subject to heat exchange	Quantity	Unit price	incremental cost	GEF incremental cost	GEF subsidy
			(CNY)	(USD)	(USD)
	Set	RMB/set	RMB	Exchange rate: 1: 6.18	Exchange rate: 1: 6.18
heat exchanger unit 1#-upper loop	1	260000	256000	41423.9	20712.0
heat exchanger unit 1# -lower loop	1	260000	256000	41423.9	20712.0
heat exchanger unit 3#-upper loop	1	260000	256000	41423.9	20712.0
heat exchanger unit 3#-lower loop	1	260000	256000	41423.9	20712.0
Water treatment and water tank	1	40000	40000	6472.5	1941.7
Subtotal			1080000	172168.3	84789.6
Total GEF subsidy					208894.0

 (USD 1=CNY 6.18)
Note: Spare parts: 2 ball valves DN200, DN150, DN100, DN80 and DN65 respectively; 1 electric control valve DN100, DN80, DN65 respectively; 1 plate heat exchanger 29m², 15m² and 8m² respectively; 2 temperature sensors; 2 pressure sensors.
4.3 Incremental earnings
In comparison with energy efficiency standard of 50% (q_C=38kg/m²), in this project about 4.04 kg will be saved per m2; in terms of total residential area of 50, 000 m2 and standard coal price of RMB 1200/ton, heat price of RMB 240, 000 will be saved per year.
4.4 Potential urban energy efficiency
The stylized estimate of energy influence conforming to 65% of energy-efficient residential building is applicable to urban residential buildings constructed in Yinchuan area during 2012-2022.
Main assumptions compliant to conditions: 
All new buildings shall be connected with coal-fueled centralized heating system and respond to the actual thermal demand. In the heat supply system, the thermal piping network efficient shall be 95% and the thermal productivity 74%;
Meter all of new buildings and install household thermal adjustment devices;
Adopt heat supply parameters for Yinchuan, including seasonal average thermal demand and heating duration (150 days).
The centralized heating area of residences increased during 2012-2022 will be 6 million m2;
Baseline plan (non- energy-efficient building): 
Seasonal average thermal demand is 52 W/m2,
Based on above assumption, the standard coal consumption for unit heating area in a heating season is 38kg/ m²,
Therefore as of 2022, the total heating coal demand for newly increased centralized heating area is 26*6000000=156000 ton standard coal;
 
In 65% of energy-efficient building design standard plan:
Seasonal average thermal demand is 50 W/m²,
Meaning that the standard coal consumption for unit heating area in a heating season is34kg/ m²,
Therefore as of 2022, the total heating coal demand for newly increased centralized heating area is: 4kg/ m²*6000000 m²=24000 ton standard coal;
 
In 50% of energy-efficient building design standard plan:
 
Seasonal average thermal demand is 45W/m²,
Meaning that the standard coal consumption for unit heating area in a heating season is32kg/ m²
Therefore as of 2022, the total heating coal demand for newly increased centralized heating area is: 32kg/ m²*6000000 m²=192, 000 ton standard coal;
 
Brief summary: 6 million m2 is predicted to increase in future 10 years since 2012. If building energy efficiency of 65% is adopted in all newly increased construction area, in comparison with non- energy-efficient building, 36,000 tons of standard coal will be saved every year with cost saving of RMB 43 million and CO2 emission reduction of 100,000 tons so as to greatly alleviate environmental pollution.

Attachment: Project Schedule

2013 Construction Timetable of Ningxia International Auto Mall Phase II Commercial & Residential Project

No.

Item

Completion date

April

May

June

July

August

September

October

November

Earth

Middle

Late

Earth

Middle

Late

Earth

Middle

Late

Earth

Middle

Late

Earth

Middle

Late

Earth

Middle

Late

Earth

Middle

Late

Earth

Middle

Late

1

Preparation of project feasibility report

12.04.01-12.04.09

2

Approval of feasibility report

12.04.10-12.05.08

3

Tendering for project equipment

12.05.09-12.06.07

4

Installation of indoor heating system structure

12.06.08-12.07.07

5

Installation of thermal meter structure

12.07.08-12.07.30

6

Installation of heat exchange station of building

12.04.01-12.04.12

7

System commissioning

12.04.13-12.05.11