The correct outlet blade angle can maximize the capacity of an air-conditioning system and effectively improve the flow field and temperature distribution in the car

thereby greatly improving the thermal comfort of passengers. In the current study

a class A vehicle model with a scale ratio of 1:1 was simplified and the range of outlet blade angle was equally divided. Simulations and experiments were carried out in conjunction with assessment of a thermal comfort evaluation index to evaluate the flow field and temperature distribution. The results showed that the optimal air outlet blade angle was 50°

i.e.

the air was blown to the upper side of the front passenger's shoulder and the outside of the passenger’s cheek.