Principle of Weilai es8 air conditioning system

The principle of Weilai es8 air conditioning system is the thermodynamic principle of heat pump air conditioning, which absorbs heat by evaporation and releases heat by liquefaction. It can transfer the heat absorption in the cold air to the working medium (refrigerant), then heat the high-temperature working medium through the condenser, and heat the air in the car by compression to realize the function of warm air.

The heat obtained by heat pump air conditioning is the sum of electric energy consumption and absorbed low-level heat energy, so it consumes less power than PTC heating when obtaining the same heating effect.

Just like there is a COP (energy efficiency ratio) label on household appliances, the higher the energy efficiency ratio, the better the energy saving effect. Theoretically, the COP of PTC heating is only 1, while the COP of heat pump system is also higher than 1, and the actual use is generally between 2 and 4.

Disadvantages:

The disadvantage of heat pump system is that its working efficiency is easily affected by extreme low temperature. The colder the weather, the lower the efficiency. For example, the COP at -30℃ is 1, which is equivalent to PTC heating.

Of course, the key reason why electric vehicle manufacturers are unwilling to use heat pump system is that it is too expensive. The cost of heat pump system is 3-4 times that of traditional automobile air conditioner.