WATER AS REFRIGERANT: Development of new type of compact, high efficient and cost effective axial compressor for commercial chillers with water as refrigerant

摘要

From numerous perspectives, water is the ultimate choice of refrigerant. It is cheap and readily available; there is no contribution to global warming, no contribution to ozone depletion. It is non-flammable and nontoxic and there are no harmful atmospheric or fire breakdown products. This paper describes the result of the research with the objective to develop a commercial competitive chiller unit based on water as refrigerant. More than six years of research has resulted in the development of two sizes of a compact, low cost and high efficiency axial compressor for 0.8 MW and 1.8 MW cooling capacity respectively. The design and testing of the compressor and the direct type heat-exchangers has been performed at Danish Technological Institute. Based on the fundamental results a prototype commercial chiller has been designed, established and tested by Kobe Steel, who have the production rights along with Johnson Controls Denmark.