Compared with the traditional heating method, the air source heat pump heating is cleaner, safer, reliable and convenient. It is worth popularizing this technology to the chilly area and benefiting more people.
In recent years, with the popularization of heat pump special compressor equipped with jet (or liquid) enthalpy-increasing technology, frequency conversion technology and two-stage compression technology, it is no longer a problem that the temperature of -25C or even lower (some enterprises claim to reach -35C). It is no longer possible to look at air to water heat pump from the old perspective.
So when consumers buy air source heat pump, is it enough to identify low ambient temp heat pump compressors? Is it possible to ensure stable and efficient heating at low temperatures? Let’s talk about this topic today.
Compressor is the key technology of low ambient temp heat pump
The reason why low ambient temp heat pump can operate normally at lower annular temperature is to solve several problems encountered by conventional heat pump, such as insufficient heat production, low COP and unstable operation due to low evaporation temperature, low suction flow rate, high compression ratio and high exhaust temperature.
Firstly, the internal structure design of low ambient temp heat pump compressor. The lower the evaporation temperature is, the higher the compression ratio will be. If the compressor is to work at a lower evaporation temperature, the compression ratio of the low ambient temp heat pump compressor will be greater.
Secondly, the enthalpy-increasing technology of jet is adopted. When the evaporation temperature is very low, the enthalpy of the jet is introduced through the external refrigerant. At the same time, the branch of the condenser is divided into two ways: one way is used for the refrigerant of the main circuit of super cooling, the other way is used for cooling the refrigerant of the main circuit, which increases the super cooling degree, enlarges the temperature difference between the heat exchange and the ambient temperature, and enhances the heat generation. Reduce the compression ratio of the scroll disk.