What size an Air Source Heat Pump is Needed for Heating 10,000 Square Meters

To determine what size an air source heat pump is needed for heating 10,000 square meters, we need to consider multiple factors, including the building's insulation performance, climate conditions, heating area, etc. The following is a detailed analysis and calculation process:

1. Basic heat consumption calculation

According to the basic principles of heat load calculation in, we can use the following formula to calculate the basic heat consumption:

Q=A×K×(T_n−T_wn)

Where:

Q is the basic heat consumption (W)

A is the area of the enclosure structure (m²)

K is the heat transfer coefficient of the enclosure structure (W/m²·K)

T_N is the indoor calculated temperature (℃)

T_{WN} is the heating outdoor calculated temperature (℃)

Assumptions:

Indoor calculated temperature T_N = 20℃

Heating outdoor calculated temperature T_{WN} = 10℃

Heat transfer coefficient of enclosure structure K = 1.5 W/m²·K

For a building of 10,000 square meters:

Q = 10000 * 1.5 * (20 - (-10)) = 10000 * 1.5 * 30 = 450000 W = 450 kW

2. Consider additional heat consumption

According to the description in, additional heat consumption needs to be calculated according to specific circumstances, including heat loss from windows, doors, pipes, etc. Assume that additional heat consumption is 20% of basic heat consumption:

Q_{additional} = 450 kW * 0.2 = 90 kW

3. Total heat consumption

Total heat consumption is basic heat consumption plus additional heat consumption:

Q_{total} = 450 kW + 90 kW = 540 kW

4. Selection of the HP of air source heat pump

Assuming that the heat required per square meter is 73.5W (this is a rough estimate, and it may need to be adjusted according to specific circumstances), then:

10,000 square meters * 73.5W/square meter = 735kW

According to the 8HP air source heat pump, which is about 5.88 kilowatts (KW), 10,000 square meters requires a 125-HP air source heat pump.

5. Comprehensive consideration

Taking into account factors such as the building's thermal insulation performance and climatic conditions, the actual selected air source heat pump power may vary. According to the recommendations in, heating a 1,000 square meter house requires about 100 kilowatts of air source heat pump power, and the actual selection may increase to 120 kilowatts.

Therefore, for a 10,000 square meter building, it is recommended to select an air source heat pump system with a power between 500 kilowatts and 600 kilowatts to ensure sufficient heating capacity. When making specific choices, adjustments should be made based on factors such as the building's actual thermal insulation performance and climatic conditions.