The vehicle air conditioner is installed on off-road vehicles. The installation method, the use environment, and the power requirements are not the same as ordinary civil air conditioners and ordinary automobile air conditioners. Therefore, the structure and performance of the vehicle air conditioners are very different from those of ordinary air conditioners. Environmental adaptability problems, in accordance with the requirements of relevant national standards, require a series of tests such as vibration, impact, high and low temperature work, high and low temperature storage, and damp heat test. Followed by the noise problem, since the air conditioner is installed on the metal compartment wall, the exciting force generated when the outdoor unit is running is likely to cause resonance sound on the car body.
If the air conditioner is operated in a high temperature environment for a long time, it is a severe test for the compressor and the air conditioning system. The higher the ambient temperature, the following phenomena will occur in the refrigeration system: (1) The insulation level of the compressor for the compressor is generally E (temperature 120 ° C), beyond which the insulation deteriorates, the compressor life is shortened, and even burn.
(2) Decomposition of refrigerant and lubricating oil For R22, a chemical reaction occurs in the range of 120 to 150 °C, and the decomposed refrigerant acts on the lubricating oil, and in addition to acid and water, the carbon in the lubricating oil Free formation of carbon deposits, causing damage to the compressor. This reaction is exacerbated by an increase in temperature.
When the air conditioner is operated at an ambient temperature of 5 ° C, the high pressure side condensing pressure of the system in the theoretical cycle is about 3.OMPa, and the compressor discharge temperature has reached 110 ° C. The exhaust pressure and temperature are higher in the actual cycle. Since the air conditioner adopts a fully enclosed rolling rotor type compressor, a small loop liquid spray cooling method is adopted in the refrigeration system to cool the compressor, so that the system can work normally.
Monomers Oligomers,Cas 108-45-2,M-Phenylenediamin In Stock,108-45-2 99%
Henan Tianfu Chemical Co.,Ltd , https://www.hnbatteryelectrolyte.com