Performance Studies on Solar Assisted Single and Double Bed Adsorption Refrigeration system

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Ashok Kumar K, N. Kapilan , S Kasthurirengan , Dinesh P. A

Abstract

The demand on refrigeration and air conditioning is growing day by day and the continuous price rise of fossil fuels and environmental concern have made in search of reliable, pollution free and low-cost refrigeration. The cooling systems that are existing mostly are working on vapour compression principles by using traditional refrigerants are posing a negative impact on the environment in terms of global warming and ozone layer depletion because of the release of harmful gases like HFC’s, CFC’s and CO2. In this regard heat utilization for cold production is nowadays a desirable challenge in several industrial applications and adsorption refrigerators operated by low heat source temperatures from solar or waste heat energy and gaining significant importance on account of their applications in several areas in order to replace conventional vapour compression refrigeration cycles driven by electricity. The cooling systems operated by vapour adsorption principles are eco-friendly and reliable but possesses lower coefficient of performance (COP) when compared to the traditional systems due to the lack of advancement and research. By taking into account the energy conservation and environmental aspects there is a need to develop the vapour adsorption refrigeration (VAR) system which will appreciably compete the existing cooling systems. In this work, a solar assisted vapour adsorption system is developed and used silica gel-water as the working pair. The experimental results show that the adsorption system is feasible to produce cold even with low temperature source of heat and compare to single bed system double bed system produces continuous cooling effect.

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