Method for comprehensively using outward-exhausting waste heat in refrigerating process of supermarket showcase

Abstract

Provided is a method for comprehensively using outward-exhausting waste heat in a refrigerating process of a supermarket showcase. A heat exchanger is arranged at the top of the showcase, a controllable three-way valve capable of blocking refrigerant or reducing flow of the refrigerant flowing to the condenser is arranged in a connection pipeline capable of conveying externally-exhausting media carrying heat energy to an outdoor condenser after refrigerating of a compressor unit, the other port of the controllable three-way valve is directly connected with the heat exchanger arranged at the top of the showcase to form a waste heat system pipeline input passage, and the controllable three-way valve is further connected into a behind-valve pipeline which leads a three-way control valve to be communicated with the condenser of the compressor through the connection pipeline, so that a waste heat system pipeline back output passage is formed. Simultaneously, waste heat obtained by the heat exchanger can be communicated with the lower bottom of the showcase through a showcase back air passage to form a waste heat inner exhausting passage. Therefore, low temperature of the front ground of the showcase can be eliminated, temperature difference of partial areas of a supermarket can be reduced, purchasing environment of the supermarket can be improved, and simultaneously, the heat exchanger can serve as an indoor air conditioner to perform warming and heat preservation complement.

Description

technical field [0001] The invention relates to a method for recycling waste heat energy, in particular to a method for comprehensive utilization of waste heat exhausted during the refrigeration process of supermarket showcases. Background technique [0002] At present, in order to ensure the freshness of food, large supermarkets usually store food in frozen and refrigerated display cabinets. In order to facilitate display and selection of products, the display cabinets usually adopt a multi-layer open design, and multiple display cabinets are combined and arranged in a centralized manner. Usually, the refrigeration compressor unit in a special compressor room is used to centralize the cooling source for these display cabinets. [0003] The heat generated during the refrigeration process of this compressor is generally discharged directly to the outdoor space. In the midsummer season, these external heat not only cause the enhancement of the "heat island effect" in the loca...

AI Technical Summary

Problems solved by technology

In winter, the cold aisle not only causes the temperature difference between the upper and lower shopping aisles to be too large, but also causes the temperature in some areas of the supermarket to be too low.

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