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Refrigerating cycle system driven by liquid nitrogen engine with exhaust residual heat of diesel engine as heat source

An engine system and engine-driven technology, which is applied in the direction of machines/engines, gaseous engine fuels, fuel systems, etc., can solve the problems of low utilization efficiency of exhaust waste heat of internal combustion engines, and achieve the effects of improving utilization rate, optimizing refrigeration cycle, and improving COP

Inactive Publication Date: 2012-11-07
HANGZHOU DIANZI UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

This leads to the low utilization efficiency of the exhaust heat of the internal combustion engine.

Method used

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  • Refrigerating cycle system driven by liquid nitrogen engine with exhaust residual heat of diesel engine as heat source

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing

[0017] Such as figure 1 As shown, the liquid nitrogen engine-driven refrigeration cycle system using the exhaust heat of the diesel engine as the heat source includes a refrigeration system and a liquid nitrogen engine system, and the liquid nitrogen engine system provides power for the refrigeration system.

[0018] The liquid nitrogen engine system includes a liquid nitrogen engine 6 , a gasification heat exchanger 2 , a diesel engine 1 , a liquid nitrogen storage tank 4 , an exhaust gas turbine 5 and a cryopump 3 . The exhaust pipe of the diesel engine 1 is respectively connected with the cylinder wall of the liquid nitrogen engine 6, the exhaust gas turbine 5 and the gasification heat exchanger 2, and the high-temperature exhaust gas of the diesel engine 1 is discharged into the external atmosphere after passing through the pipeline in the gasification heat exchanger 2, ...

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Abstract

The invention relates to a refrigerating cycle system. The efficiency of the traditional refrigerating cycle system driven by utilizing residual heat is not high. The refrigerating cycle system comprises a refrigerating system and a liquid nitrogen engine system, wherein the liquid nitrogen engine system supplies power to the refrigerating system; the liquid nitrogen engine system comprises a liquid nitrogen engine, a gasification heat exchanger, a diesel engine, a liquid nitrogen storage tank, a waste gas turbine and a low-temperature pump; the heat exchange is carried out on the exhaust residual heat of the diesel engine with the cylinder wall of the liquid nitrogen engine, the waste gas turbine and the gasification heat exchanger; the refrigerating system comprises a condenser, an expansion valve, a sub-cooler, an evaporator and a compressor; and the compressor, the condenser, the sub-cooler, the expansion valve and the evaporator are sequentially connected to form a refrigerating cycle. The sub-cooler is increased in the refrigerating system, so the original refrigerating cycle is optimized, and the COP (Coefficient of Performance) of the refrigerating system is greatly enhanced.

Description

technical field [0001] The invention belongs to the technical field of engineering thermodynamics, and relates to a liquid nitrogen engine-driven refrigerating cycle system using exhaust waste heat of a diesel engine as a heat source. Background technique [0002] In the total calorific value generated by fuel combustion in a diesel engine, the energy used as power is about 30-40%, and the heat discharged into the atmosphere by the exhaust pipe of the diesel engine is roughly equivalent to the energy used as power. [0003] Energy conservation and environmental protection is the theme of today's social development, and scientific and technological workers have conducted in-depth research on the utilization of waste heat from diesel engines. The power of the marine diesel engine is relatively large, and the space layout of the ship is relatively easy compared with that of the car, and the air conditioning and refrigeration of the ship and the ice making of the fishing boat co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B27/02F02G5/02F02B43/12F02B37/00
CPCY02T10/166Y02T10/32Y02T10/144Y02A30/274Y02T10/12Y02T10/30
Inventor 元广杰陈国金苗晓南俞小莉
Owner HANGZHOU DIANZI UNIV
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