CO2/NH3 combined refrigeration system
A refrigeration system, CO2 technology, applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve the problem of insignificant energy saving effect, and achieve the effect of energy saving and low energy consumption
Inactive Publication Date: 2008-10-08
TIANJIN UNIV OF COMMERCE
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[0005] But CO 2 / NH 3 Compared with the ammonia single-stage refrigeration system, the cascade refrigeration system has an energy-saving critical refrigeration temperature (generally -35 ° C ~ -20 ° C), when the power consumption of the unit cooling capacity is produced, when the CO 2 / NH 3 When the refrigeration temperature of the cascade refrigeration system is higher than the refrigeration critical temperature, compared with the ammonia single-stage refrigeration system, its energy saving effect is not significant
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[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] figure 1 For the present invention a CO 2 / NH 3 Schematic diagram of the composite refrigeration system, the CO of the present invention 2 / NH 3 The compound refrigeration system is in CO 2 / NH 3 The cascade refrigeration system is based on the CO 2 Adding CO to the refrigeration cycle 2 solution pump. by NH 3 Refrigeration cycle system and CO 2 The refrigeration cycle system consists of the NH 3 Refrigeration cycle system by NH 3 Refrigeration compressor 3, NH 3 Refrigeration cycle condenser (high temperature grade) 4, NH 3 Refrigeration cycle throttling device 5 and evaporative condenser 2 are connected in sequence and then connected with NH 3 The inlet connection of the refrigeration compressor consists of the CO 2 The refrigeration cycle system consists of CO 2 Refrigeration compressor 1, evaporative condenser 2, li...
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The invention discloses a CO<2> / NH<3> composite cooling system, aiming at providing a cooling system which reduces energy consumption of system via cool-carrying circulation of CO<2> when cooling temperature is higher than critical cooling temperature for energy saving. The system is composed by a NH<3> cooling circulation system and a CO<2> cooling circulation system, a CO<2> liquid pump is connected between a liquid phase CO<2> liquid storage device and a CO<2> cooling circulation throttling device of the CO<2> cooling circulation system; a CO<2> liquid pump bypass valve is connected between an inlet and an outlet of the CO<2> liquid pump; a CO<2> cooling compressor bypass valve is connected between an inlet and an outlet of an CO<2> cooling compressor. The cooling system of the invention adds the CO<2> liquid pump into the CO<2> / NH<3> composite cooling system, and two ends of the CO<2> liquid pump and the CO<2> cooling compressor are respectively connected with the bypass valves; when obtaining cool quantity whose cooling temperature is higher than critical cooling temperature for energy saving, the CO<2> cooling compressor is closed and the cool-carrying circulation of CO<2> reduces energy consumption to save the energy.
Description
technical field [0001] The present invention relates to a refrigeration system, more specifically, to a CO 2 / NH 3 Composite refrigeration system. Background technique [0002] In recent years, due to the discovery that freon refrigerants have destructive effects on the atmospheric ozone layer and can produce environmental problems such as the greenhouse effect, a consensus has been reached internationally to completely ban CFC refrigerants and gradually limit the use of HCFC refrigerants. For this reason, researchers around the world are also actively researching Freon replacement technologies, mainly researching artificially synthesized refrigerants, but a large number of facts show that many artificially synthesized substances are beneficial to human beings from the very beginning. However, with the large amount and long-term use of this substance, it gradually shows a huge destructive effect on the ecological environment. With the application and development of refrig...
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IPC IPC(8): F25B7/00
Inventor 申江李林
Owner TIANJIN UNIV OF COMMERCE