Abstract
AbstractThe present paper investigates the influence of organic blend antifreeze concentrations in the water to characterize the thermo physical properties as well as the performance parameters of a coolant fluid in cross-flow-type heat-exchanger systems. The performance characteristics of the selected coolant are also compared with pure water under similar working conditions. The influence of different operational parameters, such as rate of heat transfer, exergy change, entropy generation rate as well as irreversibility, has been studied using analytical methods. This study reports a maximum enhancement of heat transfer rate by 15% using a 25% glycerol solution as compared to water for the same coolant flow rate and inlet temperature. The present investigation found the heat transfer coefficient value to raise by around 7% with a 25% glycerol solution as a coolant in comparison to that of water. The present mathematical analysis reports an opportunity to use glycerol solution as an economic and flow-surface-friendly coolant in cross-flow heat exchangers.KeywordsIonic coolantsCross-flow heat exchangerExergyHeat transfer coefficientOrganic coolants
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