Is air energy heat pump heating suitable for the weather in Shaanxi?

1. Air energy heat pump heating can be suitable for the weather in Shaanxi. Normal temperature air energy heat pump can operate normally when the temperature difference is -7 degrees to 40 degrees, and ultra-low temperature air energy heat pump can also operate normally at -25 degrees. The low temperature operation standard of air energy heat pump in the industry is-10 degree, and the lowest temperature in winter in Shaanxi is-10 degree. Air energy heat pump heating can operate normally in Shaanxi.

2. Principle: The working principle of air energy heat pump. Using the inverse Carnot principle of heat pump, a lot of low-temperature heat energy in the air is absorbed with very little electric energy, which is converted into high-temperature heat energy through the compression of compressor, so as to achieve the purpose of air heating. Therefore, the heat in the air directly affects the energy efficiency of the air energy heat pump unit, and the most intuitive embodiment of the heat in the air is the temperature of the air. High temperature means that there is more heat in the air and sufficient heat source, so that the unit will run better and have high energy efficiency. On the contrary, energy efficiency will be reduced.

3. Influence of ambient temperature on the performance of air-energy heat pump: The heating areas in China are divided into cold area, cold area, sub-cold area and normal temperature area from north to south, so different ambient temperatures have different effects on the performance of air-energy heat pump.

1) Influence of ambient temperature on air source heat pump heating.

The heating characteristics of air source heat pump unit are complicated. When the surface temperature of the coil is lower than the dew point temperature of the air, the air will condense and the surface of the coil will undergo phase change heat transfer, which is beneficial to improve the heating capacity of the heat pump unit. However, when the surface temperature of the coil is lower than the freezing point temperature of air (below 0℃), if the relative humidity in the air reaches a certain level at the same time, the surface of the coil will be frosted. If you don't defrost in time, the frost layer will become thicker and thicker, which will affect the actual air circulation.

2) Influence of ambient temperature on air source heat pump refrigeration.

The refrigeration capacity of air source heat pump unit decreases with the increase of outdoor temperature, and the power consumption of unit increases with the increase of outdoor environment temperature. When the outdoor temperature rises to 40℃, the cooling capacity will generally drop by about 5-7%. The upper limit temperature of normal refrigeration of air source cold and hot water units is generally 40-45℃.

Therefore, the ambient temperature has a great influence on the air source heat pump, and users should follow this law when using the air source heat pump to make the machine run efficiently.

4. Technical problems of the influence of ambient temperature on the performance of air energy heat pump:

1) ultra-low temperature technology

2) Intelligent and rapid defrosting technology

3) turbine direct injection enthalpy increasing technology

4)LTA low temperature compensation technology