A low-temperature refrigeration device driven by waste heat of a fishing boat and its refrigeration method

Abstract

A low-temperature refrigeration device driven by waste heat of a fishing boat and a refrigeration method thereof, the whole device includes a mixed refrigerant cycle and an absorbent cycle. The mixed refrigerant is composed of two refrigerants with different condensation temperatures; it is characterized in that the mixed refrigerant completes the cooling capacity of the required low-temperature cold storage through a condenser, three gas-liquid separators, and three jet pumps. A circulation pipeline is formed between the generator and the absorber through an input pipeline and an output pipeline, wherein: a heat exchanger is installed on the input pipeline and the output pipeline, and a heat exchanger is installed on the output pipeline between the absorber and the heat exchanger There is a pressure regulating valve, and a solution pump is installed on the input pipeline between the absorber and the heat exchanger; the beneficial effects of the present invention: the present invention combines the use of injectors instead of throttle valves to save the energy consumption of electric drive by driving the waste heat of the engine At the same time, the internal cascade cycle of the mixed refrigerant can produce the low temperature of -20°C- to -30°C-needed by frozen fish, which is energy-saving and environmentally friendly, and has good social benefits.

Description

Technical field [0001] The invention relates to a low-temperature refrigeration device driven by waste heat of a fishing boat and a refrigeration method thereof, and belongs to the technical field of refrigeration. Background technique [0002] China has a long coastline from south to north. There are tens of thousands of fishing boats along the coast in Liaoning, Shandong, Jiangsu, Zhejiang, Fujian, Guangdong, etc. Almost all traditional fishing boats with ice are equipped with fishing boat refrigeration equipment. Fishing boat refrigeration is still used. Double-click the compressed Freon refrigeration system. Diesel generator sets are installed on the ship to supply the compressor motor. This energy consumption mode causes a lot of fuel consumption. On the one hand, there is a cost problem. On the other hand, about 30% of the heat of the diesel engine on the fishing boat is directly discharged from the exhaust gas. Atmosphere and fuel emissions cause environmental pollution. T...

AI Technical Summary

Problems solved by technology

[0006] The present invention overcomes the problems existing in the prior art, and proposes a fishing boat waste heat-driven refrigeration device with an ejector and its refrigeration method. The present invention can solve the problem of wasting energy consumption in the process of throttling by using the ejector, and at the same time can generate -20℃-to-30℃-low temperature required for freezing fish, energy saving and environmental protection

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