Abstract
A new distillation system is proposed. The system uses decompression boiling, multi-effect, and heat pump to solve the problems of water shortage. We studied with a small-scale indoor apparatus which has only 200cm^3 inner volume of each evaporator to confirm whether it is a feasible principle. Experiments were conducted at temperatures between 15 and 20℃ as cooling water and 37 and 40℃ as the heat source, and distilled water was always obtained at every stage of multi-effect still. The results show the possibility to get the ability of the system as high as that of existing large-scale desalination plants. The present distillation system has the possibility to improve the efficiency by adding another stage of still and getting the higher COP of heat-pump.
