Abstract

The Negative environmental impacts and limited sources of fossil fuels are the major reason to focus on renewable energy sources, predominantly solar energy. Refrigeration and air-Conditioning processes consumes fifteen percent of the electricity produced in the whole world. Environment friendly adsorption cooling systems are possible alternatives to conventional electricity-driven vapour compression refrigeration systems. Comparatively bigger sizes of adsorption based cooling units, due to their low specific cooling power and manufacturing cost, are major roots that preventing successful commercialization of the technology. Efforts are on, to enhance the performance of adsorption systems through improvements in working pair’s properties, improved heat and mas transfer by efficient design of adsorbent bed. This paper traces the basic principle, improvement techniques and analyses the barriers to wide spread use of adsorption refrigerators.