Heat Pump Application for Water Distillation

Abstract

Purification of water is one of the human life importances to get pure water for daily usages. Many methods and instruments are used for that purpose. In the present work, the heat pumps used as the heat source and sink. The hot side of the heat pump supplies the thermal energy that is used for water evaporation. The temperature provided by the heat pump is not enough to evaporate the water under the atmospheric pressure, so that; the pressure in the vessel containing the water to be vaporized must be decreased to induce the water evaporation at the temperature of about 40-60°C. The cold side of the heat pump is used for condensation of water vapor and cooling the water to make it suitable for drinking and other usages. The vacuum pump here is to provide a pressure difference between the evaporation and condensation vessels of water to change the boiling and condensation temperatures of water.