Wednesday, August 16th, 2017

Desalination using solar energy: Towards sustainability

Publication year: 2010brbSource:/b Energy, In Press, Corrected Proof, Available online 13 December 2010brVeera Gnaneswar, Gude , Nagamany, Nirmalakhandan , Shuguang, DengbrThis paper describes the theoretical rationale for a new low temperature phase-change desalination process, and six examples of applications to illustrate how this process can be engineered for sustainable desalination. In this process, brackish water is evaporated at near-ambient temperatures under near-vacuum pressures created by the barometric head without any mechanical energy input. Thermodynamic advantages and benefits of low temperature phase-change desalination are discussed and results from simulation studies and a prototype test system are presented. Three of the examples illustrate how the proposed process can be driven by solar energy: a) utilizing direct solar energy; b) inclusion of an…br Research highlights: ► A new desalination process using solar energy and process waste heat was proposed. ► Theoretical and experimental results using solar energy and PV energy are presented. ► Experimental results included use of four different configurations of solar energy. ► Waste heat released by an ARS system powered by solar and PV energy was studied. ► GHG emissions for this process were compared with other desalination processes.

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