Selection of refrigeration oil for high and low temperature alternating test box refrigeration system
Refrigeration oil is closely related to the running performance and service life of the compressor. The appropriate refrigeration oil should be selected according to the requirements of use and the characteristics of the oil. In the high and low temperature alternating test chamber refrigeration unit, the refrigeration oil has the following main functions: (1) lubricating the friction surface so that the friction surface is completely separated by the oil film, thereby reducing friction work, friction heat and wear; (2) The flow of the refrigerating machine oil takes away the frictional heat, so that the temperature of the friction parts is kept within the allowable range; (3) The oil is filled in the sealing part to ensure the sealing performance and prevent the leakage of the refrigerant; (4) The movement of the oil takes away the grinding debris generated by the metal friction and acts to clean the friction surface; (5) Provide hydraulic power to the unloading mechanism. The refrigerating machine oil is used to lubricate various types of friction in high and low temperature alternating test chamber refrigeration compressors. It is the key to the long-term high-speed and efficient operation of the compressor. A part of the refrigerating machine oil enters the condenser, the expansion valve and the evaporator together with the refrigerant through the cylinder of the refrigerating compressor, which requires the refrigerating machine oil not only to have the characteristics of general lubricant, but also to adapt to the refrigeration system of the high and low temperature alternating test chamber. Special requirements should not adversely affect the refrigeration system. Multi-functional Hot Air Brush Multi-functional Hot Air BrushReduce the heat damage,tangle-free & anti-static nylon bristles. Hair without burden. 360 degree airflow vents for fast,silky-smooth,shiny effect,improving volume and control. Heated Hair Brush,Hot Air Curling Brush,Dual Voltage Hot Air Brush,Multi-Functional Hot Air Brush Ningbo Meirou Electric Appliance Co.,Ltd. , https://www.mrhaircurler.com
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