HVAC essential! Three steps to accurately calculate the cooling capacity of central air conditioning

HVAC essential! Three steps to accurately calculate the cooling capacity of central air conditioning The cooling capacity calculation of central air-conditioning is divided into three steps:

1. Calculate the actual cooling capacity required: Calculate according to the practical area of ​​the room (carpet area, the floor area of ​​the home can be deducted from the floor area); 150 watts per square meter; if the top floor or the west is exposed, it is calculated per square meter 200 watts calculation; if there is a west window or both the top and the west, at least 250 watts per square meter; if there is both a west window and the top floor, at least 300 watts per square meter; there can only be more.

2. After calculating the actual cooling capacity, it is converted into the nominal cooling capacity on the air-conditioning product. Generally speaking, the cooling capacity of 1 horse of a household central air conditioner is roughly 2000 kcal. When converted into international units, it should be multiplied by 1.162, so 1 horse is The cooling capacity should be 2000 kcal x 1.162=2324 (W-representing cooling capacity) and so on. According to this algorithm, the horsepower and cooling capacity of the air conditioner can be roughly determined. In general, 2200W-2600W can be called 1 horse, 4500(W)-5100(W) can be called 2 horses, and 3200W-3600W can be called 1.5 horses.

　　3. After the cooling capacity is determined, the cooling capacity can be estimated according to the actual situation and the appropriate air conditioner can be selected. Among them, household appliances consume a larger portion of the cooling capacity. TVs, lights, refrigerators, etc. consume 1 (W) cooling capacity per W (watt) of power. The direction and size of doors and windows, and the number of people in the house will consume a certain amount of cooling capacity, such as ：Eastern window 150W/m2, west window 280W/m2, south window 180W/m2, north window 100W/m2, if it is on the roof, consider increasing the cooling capacity appropriately.

Normally, 1 HP air conditioner is suitable for 10~15 square meters, 1.25 HP is suitable for 10-19 square meters, 1.5 HP is suitable for 16~26 square meters, 1.7 HP is suitable for 15-30 square meters, and 2 HP is suitable for 20~37 square meters. , 3 horses are suitable for 30~58 square meters.