Preheating type solar ejection-compression combined refrigerating system

Abstract

A preheating type solar ejection-compression combined refrigerating system comprises a solar hot-water loop, an ejection refrigerating fluid loop, an electric compression refrigerating fluid loop and an air conditioning water loop. The ejection refrigerating fluid loop is connected with the electric compression refrigerating fluid loop through a preheater. The ejection refrigerating fluid loop is formed by a generator, an ejector, a jet condenser, a jet evaporator, a work medium pump, a preheater and a second pipeline in a series connection mode. The electric compression refrigerating fluid loop is formed by a preheater, a compressing condenser, a throttle mechanism, a compressing evaporator, a compressor and a third pipeline in a series connection mode. According to the preheating type solar ejection-compression combined refrigerating system, heat of condensation of refrigerating fluid in exhaust gas of the compressor in the electric compression refrigerating fluid loop is recycled and used for preheating the refrigerating fluid entering the generator, the design heat exchange area of the generator of an ejection refrigerating system and the condenser of a compression refrigerating system can be decreased, and the system refrigerating capacity of the solar unit heat collection area is improved. The preheating type solar ejection-compression combined refrigerating system is suitable for air conditioning systems of radiant cooling, fan coils and the like.

Description

technical field [0001] The invention relates to the field of air conditioning and refrigeration, in particular to a preheating solar injection-compression composite refrigeration system. Background technique [0002] With the further intensification of the energy crisis, the utilization of solar energy has become the focus of attention. In the solar energy utilization technology, the solar jet refrigeration system is favored by everyone because of its simple structure, few moving parts, and low cost, and it is more and more widely used in the field of air conditioning and refrigeration. The operation effect of the traditional solar jet refrigeration system is mainly restricted by two factors: one is the change of solar radiation intensity, and the other is the changing characteristics of the air-conditioning refrigeration load at the user end. The collection of solar energy can only be carried out during the day when the sun is shining. Usually, the climate is changeable an...

AI Technical Summary

Problems solved by technology

Chinese Patent No. 200810049703.8 discloses an electric compression refrigeration system that mainly consumes electric energy for refrigeration. The jet refrigeration system uses the heat provided by the solar heat collection system for jet refrigeration, and does not make full use of the temperature of the high-temperature refrigerant from the compressor.

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