Energy efficient process and apparatus for desalinizing water

Details Energy efficient process and apparatus for desalinizing water Energy efficient process and apparatus for desalinizing water

B - Operations, Transporting

01

D

202/101

B01D 3/10 (2006.01) C02F 1/16 (2006.01)

Patent

CA 1114325

ABSTRACT OF THE DISCLOSURE Method and apparatus for desalinizing water. Salt water in an evaporation zone is provided with heat of vaporization by a heat pump which transfers heat to the water from a thermal sink. The evaporation zone is maintained at subatmospheric pressure so that the salt water boils at a temperature at least about 10 degrees above the ambient dew point. The pressure in the evaporation zone is maintained at a low level by a vacuum pump and by condensing the vapor in a condensation zone from which fresh water is collected. The heat of condensation is dissipated into a "cold" sink if available or by a heat dissipat- ing means such as an evaporative cooling apparatus. Energy efficiency results from the ability of the heat pump or pumps in the system to operate at a high coefficient of performance.

302085

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