Research on heat-operated heat pumps and refrigerators

There is an increasing need for small-scale heat-powered refrigerators and heat pumps designed specifically for use in the light commercial sector. Such devices will provide an economic use of fossil fuels and reductions in CO 2 emissions, along with a potential for using environmentally friendlier refrigerants, such as water. A number of heat-powered refrigerator cycle options are described, and a review of current research is provided