北京快三的玩法介绍 www.bfaal.icu Compressor (compressor), the low pressure gas to enhance the pressure of a high pressure gas driven fluid machinery, is the heart of the refrigeration system. It from the suction pipe at low temperature and low pressure refrigerant gas inhalation, through the rotation of the motor drives the piston to compress them, to the exhaust pipe of high temperature and high pressure refrigerant gas discharged, to provide power for the refrigeration cycle, in order to achieve compression, condensation (exothermic), expansion and evaporation (heat absorption) refrigeration cycles.
A household appliance for freezing, cold storage articles and making cold drinks. Mainly refrigerators, freezers, cold drink machine, ice cream machine, ice machine etc.. According to the refrigeration way, there are mainly compression refrigeration, absorption refrigeration and thermoelectric refrigeration (also known as semiconductor refrigeration) and so on. Compression refrigeration is the use of compressor in the closed system of gaseous refrigerant compressor, refrigerant in the circulating flow through condensation, drying, filtration, expansion, evaporation, to achieve the function of refrigeration. It can be used as a motor or an electromagnetic oscillation as a power.
New energy (NE): also known as non conventional energy. Refers to the various forms of energy beyond the traditional energy. Refers to the beginning of the development or use of active research,to be popularized energy, such as solar energy, geothermal energy, wind energy, ocean energy, biomass energy and nuclear fusion energy, etc..
The liquid metal is poured into a casting cavity adapted to the shape of the part, and the method of the part or the blank is called by the method of obtaining the part or the blank after the cooling and solidification of the casting cavity. Casting method is used to obtain castings called casting parts. Structure design of casting: ensure the working performance and mechanical properties requirements, consider the casting process and alloy casting performance requirements of casting structure, the casting structural design is reasonable or not, the casting quality, productivity and cost have great influence.