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How to calculate the cooling capacity of the household air conditioners

Summer is coming, and the family also wants to buy an air conditioner, how to choose an air conditioner with different power according to different areas, and what is the energy efficiency ratio of the air conditioner.

Answer: At present, the nominal refrigeration capacity of air conditioners on the market is very inconsistent and standardized. Strictly speaking, the size of the air conditioner’s output cooling capacity should be expressed in W (watts), and the market is often used to describe the size of the air conditioner’s cooling capacity. The conversion relationship between the two is: the cooling capacity of 1 HP is about 2000 kcal, which should be multiplied by 1.162 when converted into SI unit watts, so that the cooling capacity of 1 HP should be 2000 kcal×1.162=2324W. Here, W watts) represents the cooling capacity, and the cooling capacity of 1.5 hp should be 2000 kcal ×1.5×1.162=2486W.

Normally, the cooling capacity per square meter required for an ordinary family room is 115-145W, and the cooling capacity per square meter for the living room and dining room is 145-175W.

For example, if the usable area of a family’s living room is 15 square meters, if the cooling capacity required per square meter is 160W, the required air conditioning cooling capacity is: 160W×15=2400W.

In this way, the KF-25GW split wall-mounted air conditioner with 2500W cooling capacity can be purchased according to the required cooling capacity of 2400W.

The so-called energy efficiency ratio, also known as the coefficient of performance, is the ratio of the nominal cooling capacity of an air conditioner to its power consumption. Generally, an air conditioner with an energy efficiency ratio close to 3 or greater than 3 is preferred, which is an energy-efficient air conditioner.

For example, one air conditioner has a cooling capacity of 2000W and a rated power consumption of 640W, while another air conditioner has a cooling capacity of 2500W and a rated power consumption of 970W. Then the energy efficiency ratio of the two air conditioners is as follows: the energy efficiency ratio of the first air conditioner: 2000W/640W=3.125, and the energy efficiency ratio of the second air conditioner: 2500W/970W=2.58. In this way, through the comparison of the energy efficiency ratio of the two air conditioners, it can be seen that the first air conditioner is an energy-saving air conditioner.

 


Post time: Jul-16-2025
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