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Heat Transfer Modelling of Plate Heat Exchanger in Solar Heating System

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Document pages: 22 pages

Abstract: Plate heat exchanger can obtain higher thermal performance because of itsadvantages in high heat transfer coefficient, small scale, and can realize purecounter current flow. It has been widely applied in HVAC industry. In thispaper, the numerical research of plate heat exchanger in solar heating systemhas been proposed. Aimed at the type of herringbone corrugated plate whichhas better thermal performance and been widely used, the three dimensionalmodel is established by Gambit software. Using FLUENT software for numericalcalculation, by studying the effect of corrugated inclination angle,corrugated depth, corrugated spacing and inlet velocity of heat exchanger oninternal temperature, pressure, velocity distributions of domains, the relationshipbetween the above parameters and the Nusselt Number and thepressure drop was obtained by simulation data. Heat transfer coefficient andpressure drop correlations used to measure the overall performance of theheat exchanger. The result shows that the optimal structure parameters iscorrugated angle 60°, corrugated depth 4 mm and corrugated spacing 16 mm.

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