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The dynamic (running) performance of the automobile air conditioning system is closely linked

Posted by: AutoMotive 2021-10-20 Comments Off on The dynamic (running) performance of the automobile air conditioning system is closely linked

Calling the thermal load calculation mathematical model library, according to user input parameters, body structure parameters, material parameters and environmental parameters, operating conditions parameters, number of personnel, circulating wind mode, etc., the basic thermal load of various car models that meet user requirements can be calculated . The model library includes the meteorological parameter charts of each typical area, and can calculate the highest heat load value and hourly heat load chart (in the form of numbers and curves) of different models operating in each typical area. The simulation model of automobile air conditioning system The simulation model of automobile air conditioning system uses computer simulation technology to optimize the design of the system. At the same time, the comfort level of the car’s environment is closely related to the dynamic (running) performance of the car’s air conditioning system.

In order to make better use of the in-car comfort index when evaluating the air-conditioning system operation, it is also necessary to establish a simulation model of the automobile air-conditioning system. Establish a library of parts (compressors, condensers, evaporators, expansion valves, liquid storage tanks, pipelines) that are controlled by the user. The contents of the library can be adjusted by the user as needed, and the parts can be selected at will on the basis of the part library Make up the system. Using this model, combined with the automobile’s thermal load database, it is possible to simulate and calculate the supply air volume, supply air temperature and main operating performance parameters of the refrigeration unit for a certain air-conditioning system under given operating conditions and control methods. If the air supply volume and air temperature are compared with the air supply volume and air temperature that meet the comfort requirements in this state, the air conditioning system can be optimized by modifying the parameter values ​​of the air conditioning system equipment and repeatedly calculating and comparing. It can realize the simulation calculation of the air conditioning system that simulates the bench test. Users can select components, modify component parameters, and compose the required system simulation model according to their needs. The model library is mainly used for calculation and simulation of variable displacement compressors and fixed displacement compressors using HFC134a. After entering the specified parameters (including compressor model, refrigerant type, suction temperature, suction pressure, discharge pressure, discharge temperature, compressor speed) according to the requirements on the software interface, the user can calculate the given work The performance of the compressor under the conditions (including refrigeration capacity, power consumption, refrigeration coefficient, refrigerant flow and outlet temperature and other indicators). For automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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