Comfort calculation model The air temperature, humidity and wind speed of the human body surface in the car air-conditioning room all have an impact on the comfort of the human body. As the evaluation standard of the degree of human comfort, it should be a comprehensive parameter. Authoritative departments at home and abroad have done experimental research on this, and have given a graph of the relationship between human comfort and ambient temperature, humidity and wind speed. In order to finally use the comfort index to evaluate the operating performance of the air-conditioning system, it is necessary to determine the relationship between comfort and environmental parameters in the form of a calculation model. Regardless of the impact of the performance of the car’s air conditioning and refrigeration system, the outdoor environment and the car’s running speed are constant, and the car’s indoor thermal load remains unchanged, the calculation model for the interior and exterior flow field and temperature field of the car can achieve the following functions: call the car The vehicle structure parameters in the structure model database are calculated to calculate the vehicle compartment. The distribution of the air distribution and the size of the temperature difference when there is no one inside, and the change law of the temperature field and the flow field in the car interior when factors such as the position parameters of the air supply outlet, the shape and size of the air supply outlet, and the carriage change.
The reasonable distribution of the flow field and temperature field in the car is the ultimate goal of the operation of the automobile air conditioning system. Different models have different flow fields, temperature field distributions, and thermal loads. Therefore, different air conditioning and refrigeration systems need to be selected. The operating performance directly affects the distribution of the indoor flow field and temperature field through the actual supply air volume, supply air temperature and other parameters. Therefore, the two are closely related and affect each other. The evaporator air supply parameters and the vehicle interior return air parameters These two sets of data are the data connecting the air-conditioning system and the cabin. In the air conditioning system design stage, there is no problem of two-way communication between the two sets of data. As long as the two sets of data, which are in line with the thermal comfort of the human body in the car interior, the evaporator air supply parameters and the car interior return air parameters are sent to the air conditioning system design The software can be used to design the air-conditioning system. When checking whether the performance of the air conditioning system can meet the requirements of comfortable air supply, there is a two-way communication problem between the two sets of data of the evaporator air supply parameters and the vehicle interior return air parameters.
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