NDLI: Theoretical Analysis of a Water Desalination System Using Low Grade Solar Heat

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Al-Kharabsheh, S. Goswami, D. Yogi
Copyright Year	2003
Abstract	Theoretical analysis of a solar desalination system utilizing an innovative new concept, which uses low-grade solar heat, is presented. The system utilizes natural means of gravity and atmospheric pressure to create a vacuum, under which liquid can be evaporated at much lower temperatures and with less energy than conventional techniques. The uniqueness of the system is in the way natural forces are used to create vacuum conditions and its incorporation in a single system design where evaporation and condensation take place at appropriate locations without any energy input other than low grade heat. The system consists of solar heating system, an evaporator, a condenser, and injection, withdrawal, and discharge pipes. The effect of various operating conditions, namely, withdrawal rate, depth of water body, temperature of the heat source, and condenser temperature were studied. Numerical simulations show that the proposed system may have distillation efficiencies as high as 90% or more. Vacuum equivalent to 3.7 kPa (abs) or less can be created depending on the ambient temperature at which condensation will take place.
Sponsorship	Solar Energy Division
Starting Page	279
Ending Page	285
Page Count	7
File Format	PDF
ISBN	0791836762
DOI	10.1115/ISEC2003-44009
e-ISBN	0791836649
Volume Number	Solar Energy
Conference Proceedings	ASME 2003 International Solar Energy Conference
Language	English
Publisher Date	2003-03-15
Publisher Place	Kohala Coast, Hawaii, USA
Access Restriction	Subscribed
Subject Keyword	Solar still Vacuum Solar desalination Desalination Low grade solar heat Water Theoretical analysis Solar heating Solar energy
Content Type	Text
Resource Type	Article

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