Solar injection and speed-variable compression integrated refrigeration device

Abstract

The invention relates to an integrated refrigeration device with solar injection and variable-speed compression, comprising evaporator, regenerator, variable-speed compressor, injector, preheater, condensator, expansion valve, working medium pump, liquid and liquid injector, vapour and liquid separator and solar heat-collection generator. In the invention the solar energy is used as the main energy source and the electricity energy is assisted. When the solar energy is enough to drive injecting refrigeration system, solar heat-collection generator and variable-speed compressor are combined as turbochanger so as to improve the performance coefficient of solar injecting refrigeration system. When the solar energy is not enough, variable-speed compression refrigeration method with high efficiency is operated to solve the low efficiency of refrigeration system. The invention can make compressor cooperate with injector according to solar radiation change and realize the stable transition from strengthened injecting refrigeration to compression refrigeration so that a device can realize high-efficiency cool supply in all day and the working stability is strong.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to an all-weather injection and variable-speed compression integrated refrigeration device driven by solar energy as the main energy source and supplemented by electric energy. Background technique [0002] Solar energy is a clean, renewable natural resource. For a long time, a large number of technicians have been studying how to make full use of solar energy to effectively solve the problems of high energy consumption and environmental pollution in existing refrigeration technologies. [0003] Solar energy is still an ever-changing intermittent energy source. To meet the requirements of cooling load at any time, there are three main ways to use solar energy cooling in the prior art: one is to install two sets of solar energy and conventional refrigeration at the same time; the other is to install a large enough solar energy The heat collector and heat storage de...

AI Technical Summary

Problems solved by technology

There are different disadvantages in adopting the above methods: Method 1 requires too much investment; Method 2 not only requires too much investment, but also is often difficult to realize due to the limitation of installation space; Method 3 needs to use auxiliary energy to drive low-efficiency injection or absorption refrigeration when solar energy is insufficient. The system provides the required cooling capacity, so that the energy saved by using solar cooling is offset by the inefficient auxiliary cooling system

[0004] In addition, jet refrigeration is simple in structure, convenient to manufacture, low in cost, stable and reliable in operation, and requires less maintenance than the currently commonly used absorption refrigeration. Conversion with auxiliary energy cooling, making it difficult to achieve all-weather cooling

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