Abstract
Adsorption refrigeration technology is being increasingly investigated over the past few decades as a sustainable technology option for meeting the fast-growing cooling needs for refrigeration and air-conditioning. What is attractive about adsorption technology is the opportunity to use low grade thermal energy such as solar heat and industrial waste heat. The present study is an attempt to provide readers a comprehensive update on status and challenges of adsorption refrigeration. The effects of working parameters like evaporator temperature, condenser temperature, regeneration temperature, cycle time, and inter-stage pressure on coefficient of performance and specific cooling power are covered with an objective to include experimental as well as theoretical research work reported thus far. Research work consolidated in this study includes the integrated cycles of adsorption cooling, adsorber design with extended surfaces, multi-stage and/or multi-bed scheme, and heat and/or mass recovery scheme either in combination or individually for thermal performance enhancement. Furthermore, work on a state of the art of various commercially available adsorption chillers highlighting their cooling capacity, working temperature range, novelties, and applications are reported in detail. This review also reveals an opportunity for research in optimizing the mechanism, design, orientation of the heat exchangers, functioning, and customizing the vapour adsorption refrigeration system for widespread applications in various sectors like automobiles and agriculture. Authors present this study with an expectation to provide beginners a quick review in the area of adsorption cooling technology.
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