Backheating gas mixed circulating refrigeration, heating and temperature adjustment system

Abstract

The invention relates to a backheating gas mixed circulating refrigeration, heating and temperature adjustment system which comprises a circulating fan, a gas exhaust port, a two-channel regenerator, a water-cooling heat exchanger, a liquid nitrogen flow control valve, a liquid nitrogen storage tank, a liquid nitrogen mixer, a heater, a heating stop valve, a refrigeration stop valve, a universal stop valve, a vaporizer, a heat sink, a sensor and pipelines. Gas such as nitrogen or air serves as a circulating working medium, the circulating fan circulates the gas in the pipelines, and the circulating gas cools or heats the heat sink; during high-temperature circulating, heating temperature control is performed on the gas via the heater; during low-temperature circulating, cooling temperature control is performed on the gas via liquid nitrogen; and the cooling or heating quantity of the gas flowing out of the heat sink is recovered via the two-channel regenerator. Therefore, the flow energy consumption is reduced; the circulating fan can operate at a room temperature; the operation reliability of the fan is improved; and precise temperature control can be performed on environmental simulation equipment, namely the heat sink from -173 DEG C to 200 DEG C.

Description

technical field [0001] The invention relates to a heat recovery type gas mixing cycle refrigeration heating temperature adjustment system, the system can be used in the temperature control system realized by the temperature environment of the space environment simulation test equipment, and can precisely control the heat sink of the environment simulation equipment from -173°C to 200°C It can also be used in refrigeration, chemical industry and other fields that require heating and refrigeration. Background technique [0002] The space environment simulation test equipment is a device for simulating the vacuum and high and low temperature environment of outer space. The high and low temperature environment is realized by heat sink with a certain temperature through radiation heat exchange. In order to obtain a high and low temperature environment, the heat sink must be controlled at the required specific temperature, which requires the control of the heat sink temperature th...

AI Technical Summary

Problems solved by technology

However, in many cases, the temperature of the space environment simulation test needs to be varied within a very wide range from -173°C to +150°C, and it is difficult for liquid nitrogen and compression refrigeration processes to meet this demand, while nitrogen, air and other gases are used as circulating processes. It can work stably and reliably in the range of -150℃~+150℃. This is the gas temperature regulation

However, the existing gas temperature adjustment system is an open cycle, and the gas is directly discharged from the heat sink outlet to the atmosphere, which consumes a lot of cooling capacity and heating power, which is very uneconomical and has the disadvantages of low heating and cooling rates.

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