TWO-PHASE FLOW BOILING AND CONDENSATION HEAT TRANSFER CHARACTERISTICS OF NATURAL REFRIGERANTS: REVIEW

Author:

HEO JAEHYEOK1,LEE HOSEONG2,YUN RIN3

Affiliation:

1. Department of Mechanical Engineering, Korea University, Anam-Dong, Sungbuk-Ku, Seoul 136-713, Korea

2. Center for Environmental Energy Engineering, University of Maryland, 4164 Glenn L. Martin Hall Bldg., College Park, MD 20742, USA

3. Department of Mechanical Engineering, Hanbat National University, Duckmyung-Dong, San 16-1, Daejeon 305-719, Korea

Abstract

The existing artificial and chemical refrigerants have been phased out due to environmental concerns, and they have been replaced with environmentally friendly refrigerants. Among them, carbon dioxide, ammonia, and hydrocarbons are paid attention as next generation refrigerants, and their application has been widely expanded. Therefore, in this paper, the latest studies of flow boiling and condensation heat transfer characteristics of carbon dioxide, ammonia, and hydrocarbon are reviewed. The heat transfer characteristics of ammonia and hydrocarbon show the relatively similar trends with the conventional refrigerants compared to those of carbon dioxide. The general trends and recommendable models of flow boiling and condensation heat transfer with carbon dioxide, ammonia, and hydrocarbons are summarized.

Publisher

Springer Science and Business Media LLC

Subject

Fluid Flow and Transfer Processes,Renewable Energy, Sustainability and the Environment,Control and Systems Engineering

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