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Open AccessArticle

A Waste Heat-Driven Cooling System Based on Combined Organic Rankine and Vapour Compression Refrigeration Cycles

School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
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Appl. Sci. 2019, 9(20), 4242; https://doi.org/10.3390/app9204242
Received: 11 September 2019 / Revised: 30 September 2019 / Accepted: 9 October 2019 / Published: 11 October 2019
(This article belongs to the Section Energy)
In this paper, a heat driven cooling system that essentially integrated an organic Rankine cycle power plant with a vapour compression cycle refrigerator was investigated, aiming to provide an alternative to absorption refrigeration systems. The organic Rankine cycle (ORC) subsystem recovered energy from the exhaust gases of internal combustion engines to produce mechanical power. Through a transmission unit, the produced mechanical power was directly used to drive the compressor of the vapour compression cycle system to produce a refrigeration effect. Unlike the bulky vapour absorption cooling system, both the ORC power plant and vapour compression refrigerator could be scaled down to a few kilowatts, opening the possibility for developing a small-scale waste heat-driven cooling system that can be widely applied for waste heat recovery from large internal combustion engines of refrigerated ships, lorries, and trains. In this paper, a model was firstly established to simulate the proposed concept, on the basis of which it was optimized to identify the optimum operation condition. The results showed that the proposed concept is very promising for the development of heat-driven cooling systems for recovering waste heat from internal combustion engines’ exhaust gas. View Full-Text
Keywords: organic Rankine cycle; vapour compression cycle; waste heat recovery; marine engine; cascade utilisation organic Rankine cycle; vapour compression cycle; waste heat recovery; marine engine; cascade utilisation
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Liang, Y.; Yu, Z.; Li, W. A Waste Heat-Driven Cooling System Based on Combined Organic Rankine and Vapour Compression Refrigeration Cycles. Appl. Sci. 2019, 9, 4242.

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