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Thermodynamic analysis of R 21-DMF vapour absorption refrigeration systems for solar energy applicationsAnalyse thermodynamique des systèmes frigorifiques à absorption de R 21-DMF (diméthylformamide) pour les applications à l'énergie solaire
Authors:K Badarinarayana  S Srinivasa Murthy  M.V Krishna Murthy
Affiliation:KB is Research Associate, SSM is Assistant Professor and MVKM is Professor and Head of the Refrigeration and Airconditioning Laboratory, Indian Institute of Technology, Madras-600036, India
Abstract:The concentration-enthalpy chart for R 21-DMF refrigerant-absorbent combination is presented for the temperature range of interest for solar-driven cooling applications. A thermodynamic analysis of the vapour absorption refrigeration system (VARS) working with R 21-DMF is made to study the theoretical performance characteristics. At evaporator temperatures lower than about 0°C, R 21-DMF has a distinct advantage over R 22-DMF systems in being able to operate at lower generator temperatures. Also R 21-DMF systems perform better than R 22-DMETEG systems.
Keywords:refrigeration  methyl compound  Freon  solar energy
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