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# How to calculate the cooling capacity of air conditioning choose the cooling capacity according to t

Sihaiwang: air conditioning is a necessary artifact for life in summer, and the cooling capacity is not new to everyone. So how is the cooling capacity of air conditioning calculated? How to choose the cooling capacity written on the air conditioner, and how to feel the indoor room to choose the cooling capacity.

Calculation of cooling capacity of air conditioner

The cooling capacity of the air conditioner sold by the manufacturer actually needs to be calculated. There are two methods for calculation, provided that the room is kept closed and there is no great heat exchange.

Calculated by temperature difference:

Q (cooling capacity) = C (specific heat of air) & rho (air density) V (air volume) & Delta; t (temperature difference between inlet and outlet air of evaporator)

Calculated according to air enthalpy difference:

Q (cooling capacity) = & Rho; (air density) V (air volume) × H 1 evaporator inlet air enthalpy value - H 2 evaporator outlet air enthalpy value)

Calculate the required cooling capacity according to the room area

1. The refrigerating capacity of general household air conditioner can be selected according to the room area, sealing and heat preservation conditions, floors, orientation, height and other factors. The refrigerating capacity is generally calculated as 130w-180w per square meter, heating capacity is calculated as 150-200w, and the refrigerating capacity is 2500W. If a 10 square meter room needs 1300W to 1800W of cooling capacity, but when we choose air conditioning, it must be 0.5 or 1 horse larger than the actual need.

2. One air conditioner is more suitable for rooms of about 12 square meters.

3. If it is an office or public place, the cooling capacity of the air conditioner should be increased appropriately. Generally, the cooling capacity required for an office is 250-300W / m2, and that for a public place is 300-400w / m2.

How to calculate the cooling capacity of the air conditioner? How to choose the cooling capacity written on the air conditioner? How to choose the cooling capacity of the indoor room.

The relationship between the number of air conditioning units and the area

Applicable room area (M2) & lt; 1p12-16m2 under 1p10 M2 1.25p18-23m2 1.5p18-25m2 2p30-33m2 2.5p27-42m2 3p40-45m2 5p60m2 about 10p100 M2