Environment friendly alternatives to halogenated refrigerants—A review |
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| Authors: | M Mohanraj S Jayaraj C Muraleedharan |
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| Institution: | 1. Istituto per le Tecnologie della Costruzione, Consiglio Nazionale delle Ricerche, Corso Stati Uniti 4, 35131 Padova, Italy;2. Dipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Ancona I-60131, Italy;3. Dipartimento di Tecnica e Gestione dei Sistemi Industriali, Università degli Studi di Padova, Vicenza I-36100, Italy;4. Department of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, United States;1. Department of Mechanical Engineering and Construction, Jaume I University, Campus de Riu Sec s/n, E-12071 Castellón, Spain;2. Department of Applied Thermodynamics, Polytechnic University of Valencia, Camino de Vera, 14, E-46022 Valencia, Spain |
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| Abstract: | In developing country like India, most of the vapor compression based refrigeration, air conditioning and heat pump systems continue to run on halogenated refrigerants due to its excellent thermodynamic and thermo-physical properties apart from the low cost. However, the halogenated refrigerants have adverse environmental impacts such as ozone depletion potential (ODP) and global warming potential (GWP). Hence, it is necessary to look for alternative refrigerants to full fill the objectives of the international protocols (Montreal and Kyoto) and to satisfy the growing worldwide demand. This paper reviews the various experimental and theoretical studies carried out around the globe with environment friendly alternatives such as hydrocarbons (HC), hydroflurocarbons (HFC) and their mixtures, which are going to be the promising long-term alternatives. In addition, the technical difficulties of mixed refrigerants and future challenges of the alternatives are discussed. The problems pertaining to the usage of environment friendly refrigerants are also analyzed. |
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