This document summarizes a solar-assisted air conditioning system for residential buildings in China. It finds that the system can save 33.66-348.21 kWh of electricity per year compared to a conventional air conditioning system. It also estimates that a family of 3 could save 1238.61 kWh per year using this system, nearing their goal of 2000 kWh in annual electricity savings. Diagrams and tables are presented on the system components and their specifications, as well as the system's coefficient of performance over different months.

1. TEMPLATE DESIGN © 2008
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2015/7/26 1
TEMPLATE DESIGN © 2008
www.PosterPresentations.com
Background
Zhoukanghang Residential Area
Grid-Connected PV system
A slightly larger air-cooled condenser is
applied to increase the average COP
Heat can be imparted into the refrigerant via
the water storage tank, so the compressor
can remain off longer to increase the average
COP.
Conclusion
Energy Saving:
•The Solar-assisted Air conditioner system:
348.21 KWh
•The PV: 890.40KWh
For a family of 3(3000KWh electricity
consumption/year),
1238.61KWh electricity could be
saved.(Aim:2000KWh electricity
consumption/year)
Load Calculation
Shiny Panda
Tiphaine Laurent, Li Bangjun, Yao Congcong, Wang Xiaoshen,
Dai Liming, Xiong Peng, Hua Lingji, Dai Yanjun
Building Specification
PV Refrigeration System
Solar-assisted air conditioner system
A3 A2 A1
10cm
55cm
Evaporating temperature
System COP
No effect on refrigerating output
2
2.5
3
3.5
4
4.5
5
5.5
6
November December January February March
COP
Month
Conventional Plant
Solar-assisted Plant Average
COP
3.1 &
4.12
Fig. Energy consumption comparison
Average
Energy
Saving
33.66%0
100
200
300
400
500
600
700
800
900
November December January February March
512
746
810
769
656
297
499
607
538
406
EnergyConsumption(kwh)
Month
Conventional Plant
Solar-assisted Plant
Fig. Coefficient of performance (COP) comparison
Electricity consumption：3000kwh/year
Hot water consumption：150L/day
Expect reducing electricity consumption:
1000kwh/year
The area of A-3
apartment: 78.95㎡
Type
Coolin
g
Heating
yearly
load Kwh
4131.6
5
3513.57
1-compressor ; 2-water tank; 3-thermal expansion valve; 4-evaporator/collector
Heat to water
Heat
from
solar
(and/or
ambient)
Fig. Performance of the DX-SAHP system in Shanghai
annual
average
COP 4.8
Solar
thermal
Building
integration
Solar-assisted heat pump
COP = 4
A. PV panels
B. Combiner box
C. Solar charge
controller
D. Power transformer
E. thin film module
F. Grid-connected
inverter
G. Grid-connected PV
power
station
H. Household electrical
appliances
Component Parameter Value
Solar Panel Output Voltage 48V
Inverter Output Voltage 220V
Rated Capacity 3kVA
Power transformer Input Voltage 31V
Output Voltage 48V
Skin film module Output Voltage 31V
Type Cooling Heating
yearly load Kwh 10105.92 7788.97
yearly load index Kwh /m2·y 52.33 40.33
The area of unit A(1,2,3):
193.11㎡
Goals：Use solar energy
Integrate solar energy technology into
building strategies
Model
Refrigerating/Hea
ting Capacity
Operational
Power
COP
Refrigerating Heating Refrigerating Heating
kW kW kW kW
GMY-Y252WM/A 25.2 27 5.93 5.95 4.25
GMY-Y280WM/A 28 31.5 7 7.3 4
GMY-Y335WM/A 33.5 37.5 8.41 9 3.98
GMY-Y504WM/A 50.4 54 11.86 11.9 4.25
GMY-Y560WM/A 56 63 14 14.6 4
GMY-Y615WM/A 61.5 69 15.41 16.3 3.99
GMY-Y670WM/A 67 75 16.82 18 3.98
PV Cell
PV Energy
Polycrystal silicon
solar cellThin film solar cell
for windows
789.4+101=890.4KW.h
Total electricity in one apartment
annually:
DX-SAHP application
If apply DX-SAHP, 30%-80% energy can be
saved compared with other water heater
systems.
Conversion
efficiency
17%
Building integrated solar energy technologies