Assessment of Energy Potential and Benefit under the Ground Source Heat Pump Air Conditioning System in Anqing Area of Eastern China
Table 6
Energy cost of different heating modes.
Type
Price
Consumption
Cost (yuan)
Energy cost per square meter (yuan/m2)
Remarks
Electricity
0.8 (yuan/kWh)
4860000 (kWh)
3888000
38.9
Thermal efficiency is 1
Coal
600 (yuan/kg)
1116172 (kg)
669703
6.7
Thermal efficiency is 0.75
Natural gas
3 (yuan/m3)
607500 (Nm3)
1822500
18.2
Thermal efficiency is 0.8
Central air-conditioning (CAC)
0.8 (yuan/kWh)
2113043 (kWh)
1690430
16.9
Comprehensive energy efficiency is 2.3
Ground source heat pump (GSHP)
0.8 (yuan/kWh)
1472727 (kWh)
1178180
11.8
Comprehensive energy efficiency is 3.3
Remarks: electricity price is 0.8 yuan/kWh. Natural gas price is 3.0 yuan/m3, and its calorific value is 36.0 MJ/m3. The calorific value of coal is 20.9 MJ/kg. The heating season is 90 days, and the average load rate is 0.75.
