September 10, 2015
When learning about air source heat pump, a concept that is often inseparable is "HP". For example, when users consult, they often ask: "My house is 100 square meters. To make hot water and heating, how many HP of air source heat pump do I need?" So what does the HP of air source heat pump mean? How to calculate it specifically? Let's follow the editor to find out.
Before industrialization, people used horses to pull carriages. In order to describe the carrying capacity of carriages, it was defined according to the number of horses equipped with the carriage. This is HP, and the unit is "HP". Today, HP is still one of the key parameters for measuring performance.
In the refrigeration industry, "HP" is a unit for measuring heating capacity/cooling capacity, which indicates the output power of its compressor motor. Air conditioners are measured by cooling capacity. 1 HP ≈ 2500W. The 1 HP machine and 3 HP machines we often hear are divided according to their cooling capacity. If you don't know how many horses your home air conditioner has, divide its cooling capacity by 2500W to get the result, that is, cooling capacity/2500W=HP.
As a rising star in the HVAC industry, air source heat pumps have adopted the measurement standards of the air conditioning industry and divided the air source heat pump capacity by cooling capacity.
In fact, the air source heat pump capacity is just a name used in the air conditioning industry, but air source heat pumps are born for heating. Therefore, it is not standard to divide the air source heat pump capacity by cooling capacity. When users choose air source heat pumps, they should focus more on the heating effect of air source heat pumps.
Air source heat pumps can make full use of the low-grade heat energy in the air, process this part of the heat energy through the compressor consuming electricity to do work, and finally transfer the heat to water to produce hot water. In this process, the heat pump consumes very little electricity, 1 part of electricity can produce 4 parts of heat, and the heating efficiency can reach 400%, which is 75% more energy-saving than electric heating equipment.
Finally, let's popularize why "HP" has evolved from a unit of measuring power to a unit of measuring cooling capacity/heating capacity. In the early days of the domestic air-conditioning industry, Japanese brands were very popular, and their industry standards also had a profound impact in China. "HP" is actually the industry standard of Japan, which is the unit for measuring the power of air-conditioning motors/compressors (1HP ≈ 735W).
my country began to use the new international measurement standard unit "W" (Watt) in 1994. According to my country's energy efficiency rating standard (EER), the energy efficiency of level 1 is 3.4 or above, and the cooling capacity of 1HP air conditioner (motor/compressor) is converted to 735W*3.4=2499W (Watt). For the sake of convenience, "HP" gradually evolved into a unit of cooling capacity, 1HP ≈ 2500W (Watt).
