What is required for the commercialization of metal hydride refrigerators and heat pumps: Surface engineering can solve the application problems |
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| Affiliation: | 1. Center for Environmental Energy Engineering, University of Maryland, 4164 Glenn L. Martin Hall Bldg., College Park, MD 20742, USA;2. Department of Chemical and Biomolecular Engineering, 1223A Chemical & Nuclear Engineering Bldg., University of Maryland, College Park, MD 20742, USA |
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| Abstract: | Metal hydride devices such as refrigerators, air-conditioners, and steam regenerators have been developing for more than 15 years since the principles of thermal energy conversion were demonstrated by Phillips Research Laboratory, Brookhaven National Laboratories (BNL), and Argonne National Laboratory (ANL). Engineering approaches to improve hydriding properties such as sloped plateau and hysteresis, to control pressure-temperature-composition relations and to improve the effective thermal conductivity have been conducted by many people. As yet we have not yet reached the commecial levels for practical applications.In this paper, the reasons why we could have succeeded in bringing our R&D efforts into commercial levels are pointed out. The aim of this paper is to describe the scientific and technical problems to be solved for realizing metal hydride applications as thermal conversion devices in commercial scales. |
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