Sanyo Compressor C-SB263H8B development dimension in the new refrigeration technology refrigeration theory and practice, such as thermoacoustic refrigeration technology, magnetic refrigeration technology, vascular refrigeration technology research and application, as opposed to conventional vapor compression refrigeration system The strong advantage. Conventional vapor compression refrigeration system comprising a compressor, condenser, expansion valve and evaporator composition, with the pipeline will connect them into a sealed system. Refrigerant liquid in the evaporator and the object to be cooled to a low temperature heat exchange occurs, the heat absorption and gasification of the object to be cooled, is sucked into the low pressure steam generated in the compressor, the compressed high pressure discharge. The high pressure compressor discharge gas refrigerant into a condenser, cooled by cooling water or air at room temperature, and condensed into high pressure liquid. High pressure liquid passes through the expansion valve throttling, into low-temperature low-pressure gas-liquid two-phase mixture into the evaporator, where the liquid refrigerant is evaporated refrigerant in the evaporator, the low pressure steam generated by the compressor suction again, again and again, constantly cycle. It requires a refrigerant as a refrigerant medium. Sanyo Compressor C-SB263H8B thermoacoustic refrigeration technology is the 21st century, a new refrigeration technology development, its working principle is based on the so-called thermoacoustic effect, compared with conventional vapor compression refrigeration system, thermoacoustic refrigerator without use of contaminated refrigerant environment, but the use of inert gases or mixtures thereof as the working fluid, it will not lead to the use of CFCS or HFCS destruction of the ozone layer and the greenhouse effect and harm the environment; its basic mechanism is simple and reliable, without precious material, great cost advantages; they do not need to oscillation piston and seal or lubricating oil, no moving parts in features make it life is greatly extended. Thermoacoustic refrigeration technology almost overcome the traditional shortcomings of refrigeration systems, could become the next generation of development of new technologies refrigeration. Sanyo Compressor C-SB263H8B magnetic refrigeration technology called magnetic substance used in chillers, mainly using magnetic entropy change associated with the endothermic or exothermic phenomenon. Magnetic entropy is a function of the temperature T and the magnetic field B, so there are two ways to make the magnetic entropy change. One is in the paramagnetic state applying an external magnetic field on the magnetic substance; the other is in the vicinity of the magnetic phase transition temperature Tc changes in the magnetic substance. Former external strong magnetic field, the magnetic entropy conscious control, achieve endothermic and exothermic, called dynamic (active) usage. Magnetic refrigeration is to belong to this approach. The latter is a change in temperature near T0 magnetic material, phase change occurs when a large magnetic heat capacity, called passive (Positive) usage. A typical representative of this approach is that liquid ammonia magnetic regenerator temperature zone. The basic principles of vessel refrigeration technology the program is the use of high-pressure gas to the vessel discharge and fill the cavity to obtain the cooling effect of the process. The cumulative effect of storage on a cold cycle obtained and passed to the next cycle flows into the gas leaving the vessel cold junction temperature is gradually lowered down. Refrigeration process is as follows: 1) high-pressure gas is controlled by flow through the switching valve regenerator, heat load, and the deflector in the form of laminar flow into the vessel, gradually pushing the inner tube to move toward the closed end of the gas, while The squeezed, the pressure increases, the temperature rises, the gas in the closed end of the vessel temperature reached the highest value. 2) laid at the closed end of the water-cooled heat exchanger heat away, the inner tube and the gas temperature due to heat slightly reduced pressure. 3) Sanyo Compressor C-SB263H8B switching valve is rotated so that the system of gas and the gas source directly connected to the low pressure side of the gas within the vessel again laminar flow gradually expand to the gas supply passage, the gas expands and get down low. 4) switching valve is again converted, the system communicates with the high pressure side of the gas source, repeat the cycle. Sanyo Compressor C-SB263H8B Thus, the basic pulse tube refrigerator in addition to the compressed air source and the switching valve is room moving parts, but at low temperature without any moving parts. So simple structure, reliable operation, this is the main reason for its compelling. But its low cooling efficiency, so in a long period has not been the actual development and application. In order to further improve the efficiency of the pulse tube refrigerator, and improve performance for lower temperatures, there have been various modifications of the pulse tube refrigerator. Such as: improved pulse tube refrigerator with apertures of the gas reservoir, Reversible Qimai tube refrigerator, compression power scattered pulse tube refrigerator, liquid nitrogen pre-cooled coaxial pulse tube refrigerator and thermoacoustic driven improvements reversible pulse tube refrigerator and so on. 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