What does the horse mean Is 1 horse 2350W or 2500W
Regarding the concept of "1 horse", some say it means the power consumption of the air conditioner, and some say it means the cooling power of the air conditioner. What the hell is that?
In mechanics, 1 horse is 1 horsepower, which is divided into English horsepower (1 HP ≈745.7 W) and metric horsepower (metric horsepower, 1 PS ≈735.5 W). my country usually uses metric units. The cooling capacity of a 1.5-hp air conditioner on the market is about 3500 W, and the power consumption is about 1000 W, and 1.5 * 735=1102.5 W is close to the power consumption. Does the "1 HP" of the air conditioner refer to the power consumption?
Regarding the specific concept of 1 HP air conditioner, in fact, many professionals may not be clear. There are two popular sayings on the Internet.
Statement 1: 1 horse = 2324 W cooling capacity
believes that the cooling capacity of one horse is roughly 2000 kcal (also a noun with a generation gap), which should be multiplied by 1.162 in the international unit, so the cooling capacity of one horse is 2000×1.162=2324W.
Statement 2: 1 horse = 2500W cooling capacity
It is said that this is inherited from the Japanese (Japanese air conditioners have a relatively large influence in China), and it is calculated based on the energy efficiency ratio EER. The definition of one horse is the amount of cooling capacity that can be generated by inputting 1 horsepower (735 W). There is a coefficient problem. The Japanese stipulate this coefficient as 3.4 (Japanese believe that the minimum energy efficiency ratio EER of air conditioners should reach 3.4) , So 1 horse=735×3.4=2499W.
The above two statements have some truth, and the results are similar, it is difficult to judge the authenticity. The following table shows the performance parameters of different domestic brands of air conditioners on the market.
According to the first statement, 1 horse ≈ 2350 W cooling capacity, 1.5 horses ≈ 3500 W cooling capacity;
According to the second argument, 1 horse = 2500 W cooling capacity, 1.5 horses = 3750 W cooling capacity.
In the above table, the cooling capacity of the 1.5-hp air conditioner conforms to "Theory 1", and the cooling capacity of the 1-hp air conditioner conforms to the "Theory 2". And, the same 3500W refrigeration, there are also three titles of "1.5 HP", "1.5 HP" and "1.5 HP".
Analysis shows that the use of "hp" to mark the cooling capacity of air conditioners is rather chaotic and unscientific, and it cannot accurately reflect the cooling capacity of household air conditioners.
"Room Air Conditioner" has made detailed regulations on the naming of household air conditioners
Take the air conditioner in the above table as an example, KFR-23GW, KFR-25GW, KFR-26GW, KFR-35GW, KFR-36GW are referred to as Type 23, Type 25, Type 26, Type 35, Type 36 respectively, and the corresponding air conditioning cooling capacity is respectively 2300 W, 2500W, 2600W, 3500W, 3600W.
Therefore, when buying an air conditioner, you should pay attention to the cooling capacity on the nameplate of the air conditioner instead of the "horse number". The cooling capacity required for a household air conditioner can be simply calculated as follows:
A, bedroom
The required refrigeration per unit floor area is 115 ~ 145 W/㎡ (the room is well insulated and sealed, and the sun is not sunny. Smaller is better. On the contrary, it is larger. When the floor height is higher, increase appropriately; generally 130W/㎡)
15 square meters room: 15*130=1950 W, if there is no corresponding cooling capacity air conditioner, you can choose 23 type nearby; 20 square meter room: 20*130=2600 W, choose 26 type;
B, living room, dining room
The required refrigeration per unit floor area is 145 ~ 175 W/㎡ (with good heat preservation, good sealing, and no morning sun, the smaller is better, otherwise the larger is larger, and the floor height is increased appropriately; generally 160W/㎡)
30 square meters: 30*160 = 4800 W, choose 50 type; 40 square meters: 40*160 = 6400 W, choose 65 type.
