Thermal desalination using diesel engine exhaust waste heat — An experimental analysis

Thermal desalination using diesel engine exhaust waste heat — An experimental analysis

Type	Journal Article
Author	K. S. Maheswari
Author	K. Kalidasa Murugavel
URL	http://www.sciencedirect.com/science/article/pii/S0011916414006705
Volume	358
Pages	94-100
Publication	Desalination
Date	February 16, 2015
Abstract	Describes a study of the utilization of the heat energy wasted in exhaust gas of an internal combustion engine of low capacity for desalination, using a submerged horizontal tube straight pass evaporator and a condensing unit, without the aid of any external energy used for pumping system. Researchers fabricated a horizontal tube straight pass evaporator and water cooled condenser for condensing the evaporated steam. Experiments were conducted in a 5 hp diesel engine to analyze the performance of the submerged horizontal tube straight pass evaporator (SHTE) under various load conditions. They determined that 3.0 l/h of saline water can be desalinated from the engine exhaust gas, without affecting the performance of the engine. By utilizing the heat energy in condenser water in addition to waste exhaust gas heat energy the overall efficiency of the system is enhanced and thermal pollution is significantly reduced.