CO2 hydrate slurry circulating cold accumulation and discharge type automobile air conditioning device

Abstract

The invention relates to an automobile air conditioning device, in particular to a CO2 hydrate slurry circulating cold accumulation and discharge type automobile air conditioning device, belonging to the technical fields of refrigeration engineering and chemical engineering. In the invention, the traditional evaporator is replaced by a reaction tank a, a reaction tank b and a fan coil, the cold accumulation is performed by use of the chemical reaction between CO2 and the water in the reaction tank a, and the reaction tank b finishing cold accumulation performs cold discharge through the fan coil under the drive of a circulating pump so as to realize a refrigeration effect in the automobile; and through the effect of a control valve, the reaction tank a and the reaction tank b alternately perform refrigeration and cold discharge so as to realize a continuous operation effect of a refrigeration circulation system. The automobile air conditioning device provided by the invention has the advantages that: the volume efficiency of the CO2 serving as a refrigerant can be kept at a relatively high level, thus a small structure of the refrigeration system is realized; and since the phase-transition temperature of the gas hydrate is 5-14 DEG C, and the temperature range is close to the operation conditions of the air conditioner, the shortcoming of low freezing temperature of the traditional ice cold accumulation unit can be overcome.

Description

technical field [0001] The invention relates to an automobile air-conditioning device, in particular to an automobile air-conditioning device of a CO2 hydrate slurry circulating cold storage and cooling type, belonging to the technical fields of chemical engineering and refrigeration engineering. Background technique [0002] In the patent No. 200410018309.X in the prior art, the patent titled "City Bus Ice Storage Air-Conditioning Cooling Device" discloses an air-conditioning cooling device with cold storage function. The device does not have a compressor and uses low-power The circulating water pump is used to overcome the flow resistance of the refrigerant in the circulating water pipe and the coil heat exchanger. The refrigerant in the circulating water pump is driven by the circulating water pump to continuously cool the ice cubes in the ice storage tank. It is transported to the tube-coil heat exchanger, and the tube-coil heat exchanger exchanges heat with the outside ...

AI Technical Summary

Problems solved by technology

At the same time, CO 2 The compression ratio of the refrigeration cycle is lower than that of the conventional refrigerant cycle, and its volumetric efficiency can be maintained at a high level. The high volumetric refrigeration capacity makes the equipment more compact; the high fluid density makes the compressor further miniaturized, and the connecting pipe becomes smaller. thin

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