Abstract
The practical introduction of a refrigerator using water as natural refrigerant has been prevented by engineering obstacles relating to the high pressure ratio required for its steam compressor. This high pressure ratio requirement, which is typically as high as 10,leads to increased power consumption for compression as well as the adoption of expensive heat-resistant impellers. Although the adoption of conventional indirect heat exchangers for intermediate stage cooling is effective, it is intolerably costly and space occupying. The authors proposed a multi-stage compressor with inter-cooling by direct water injection and atomization, and the results of its performance evaluation is presented here.
