Numerical Investigations on Supercritical Heat Transfer Characteristics of Environmental Friendly Refrigerants

清洁煤炭能国际期刊(英文) Pub Date : 2021-01-01 DOI:10.4236/IJCCE.2021.102002

A. Ibrahim, Peng Hu, Yiran Jiang, A. Riaz, F. Saleem, Yi Dong, Lei Jia, Panpan Zhao

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引用次数: 2

Abstract

The heat transfer of supercritical fluids is a vastly growing field, specifically to find suitable alternatives to replace conventional R134a, which can be beneficial for climate change. Most of the experimental and numerical investigations have been conducted to explore supercritical water, carbon dioxide and R134a as heat transfer working fluids. Hydrofluoroolefin (HFO) and refrigerants blends have been considered the most environment-friendly refrigerants to replace Chlorofluorocarbons (CFCs), Hydrochlorofluoro-carbons (HCFCs) and Hydrofluorocarbons (HFCs). Their main advantage of zero Ozone Depletion Potential (ODP) and comparatively lower Global Warming Potential (GWP) have attracted growing amount of attention to mitigate environmental issues. This work adopts the computational method and takes the environmentally friendly refrigerants to investigate the heat transfer characteristics under widely used shear-stress transport (SST) model. A comprehensive comparison was performed at reduced pressure of 1.10 for supercritical fluids R515A, R1234ze(E) and

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环境友好型制冷剂超临界传热特性的数值研究

超临界流体的传热是一个不断发展的领域，特别是寻找合适的替代品来取代传统的R134a，这可能有利于气候变化。大多数实验和数值研究都是针对超临界水、二氧化碳和R134a作为传热工质进行的。氢氟烯烃(HFO)和制冷剂混合物被认为是取代氯氟烃(CFCs)、氢氯氟烃(HCFCs)和氢氟碳化物(hfc)的最环保的制冷剂。它们的主要优势是零臭氧消耗潜能值(ODP)和相对较低的全球变暖潜能值(GWP)，这引起了越来越多的关注，以缓解环境问题。本文采用计算方法，以环境友好型制冷剂为研究对象，在广泛应用的剪切应力输运(SST)模型下进行了传热特性研究。在减压1.10条件下，对超临界流体R515A、R1234ze(E)和R1234ze(E)进行了综合比较

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

清洁煤炭能国际期刊(英文)

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