Air source heat pump is divided into normal temperature and low temperature. Among them, the normal temperature air source heat pump cannot work normally when the temperature reaches - 10 ℃, so it is not suitable for northern residents. After all, winter in the north is often more than ten degrees below zero. The low-temperature air source heat pump can operate normally at - 30 ℃, and can meet the heating and hot water demand of more than 90% of the northern regions.
So, in severe cold weather, does the low-temperature air source heat pump save energy?
Air source heat pump is favored for its high efficiency and energy saving. Only a small amount of electric energy is needed to drive the compressor to work. One kilowatt-hour electricity can absorb 2-4 kilowatt-hour heat from the air. However, the energy-saving effect of air source heat pump is closely related to the ambient temperature. When the outdoor temperature is lower than - 5, the heating efficiency of ordinary air source heat pump will be reduced by 45% - 55%, or even cannot be started.
The low temperature energy efficiency of the low temperature air source heat pump is about 30% higher than that of the normal temperature unit, and it can heat normally at - 30 ℃. The low temperature heating effect is better when the energy efficiency ratio is above 1.8 at - 25 ℃. It can also be used alone in cold areas of North China.
STS series Kcalin air source heat pump unit adopts "STS" continuous heating technology, which solves the technical problem of "frosting and defrosting" in the industry; Low temperature and high efficiency heat generation can be realized by using low temperature jet enthalpy increasing technology, and stable operation can be achieved at - 25 ℃. According to the third party's test, the refrigeration energy efficiency values of this series of Kcalin air source heat pump units under standard conditions in summer are higher than China's Class I energy efficiency standard (3.4), and the seasonal energy efficiency ratio (IPLV) of refrigeration in winter is 20% higher than China's Class I energy efficiency standard (3.0); In addition, experiments have proved that the heat consumption of defrosting can be saved by more than 25% when the series of units work in the frost area.