Automobile air conditioning system

Tech & Electronics

At present, the refrigerant used in domestic automobile air conditioning systems is mainly R134a, which is not environmentally friendly for its high greenhouse effect index and shows poor low-temperature heating performance as a heat pump.

The company needs to develop a dual secondary circuit automotive air conditioning system based on R290 with the following requirements:

1. The system charge must be less than 150g;
2. The whole refrigerant circuit is made into an integrated unit, with refrigeration performance not lower than the current R134a system.

The thermal management of electric vehicles is realized by the cold and hot water provided by the R290 system. An integrated water distribution module needs to be developed to fulfill the following requirements under different operating conditions:

1. The heating and cooling requirements of the passenger compartment;
2. The heating and cooling requirements of the battery;
3. The cooling requirements of the motor.