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Open AccessArticle

Exergetic and Economic Evaluation of a Transcritical Heat-Driven Compression Refrigeration System with CO2 as the Working Fluid under Hot Climatic Conditions

1
Institute for Energy Engineering, Technische Universität Berlin, Marchstr. 18, 10587 Berlin, Germany
2
Mechanical Engineering Department, Jordan University of Science and Technology, Ar Ramtha 3030, Jordan
*
Author to whom correspondence should be addressed.
Entropy 2019, 21(12), 1164; https://doi.org/10.3390/e21121164
Received: 2 November 2019 / Revised: 22 November 2019 / Accepted: 24 November 2019 / Published: 28 November 2019
(This article belongs to the Special Issue Thermodynamics of Heat Pump and Refrigeration Cycles)
The purpose of this research is to evaluate a transcritical heat-driven compression refrigeration machine with CO2 as the working fluid from thermodynamic and economic viewpoints. Particular attention was paid to air-conditioning applications under hot climatic conditions. The system was simulated by Aspen HYSYS® (AspenTech, Bedford, MA, USA) and optimized by automation based on a genetic algorithm for achieving the highest exergetic efficiency. In the case of producing only refrigeration, the scenario with the ambient temperature of 35 °C and the evaporation temperature of 5 °C showed the best performance with 4.7% exergetic efficiency, while the exergetic efficiency can be improved to 22% by operating the system at the ambient temperature of 45 °C and the evaporation temperature of 5 °C if the available heating capacity within the gas cooler is utilized (cogeneration operation conditions). Besides, an economic analysis based on the total revenue requirement method was given in detail. View Full-Text
Keywords: transcritical heat-driven refrigeration machine; carbon dioxide; optimization; exergy analysis; economic analysis transcritical heat-driven refrigeration machine; carbon dioxide; optimization; exergy analysis; economic analysis
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Luo, J.; Morosuk, T.; Tsatsaronis, G.; Tashtoush, B. Exergetic and Economic Evaluation of a Transcritical Heat-Driven Compression Refrigeration System with CO2 as the Working Fluid under Hot Climatic Conditions. Entropy 2019, 21, 1164.

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