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Heat Transfer Enhancement Studies and Pressure Drop Characteristics for Metal Foam Layered Gasket Plate Heat Exchanger

Heat Transfer Enhancement Studies and Pressure Drop Characteristics for Metal Foam Layered Gasket Plate Heat Exchanger

Date19th Feb 2024

Time02:30 PM

Venue Through Google Meet: https://meet.google.com/zjd-kpjd-ice

PAST EVENT

Details

An experiment was conducted on a single-phase system using water as the working fluid in a Gasket Plate Heat Exchanger (GPHE). The copper metal foam was employed on the corrugated profile in this experiment. The experiment was calibrated using iterative multiple linear regression analysis to find the coefficient of heat transfer on the hot water side for the given heat exchanger with a 60° corrugation angle. A comparative study was carried out between channels that were plain and modified with metal foam. The analysis focused on various factors, including the heat transfer coefficient, frictional pressure drop characteristics, pumping power, and volume goodness factor. The experiments were performed within a Reynolds number range of 200 to 1000, with the hot and cold water temperatures set at 60°C and 30°C, respectively. The experiments used copper metal foam with 50 pores per inch (PPI). The foam had a porosity ranging from 0.6 to 0.9, with a pore size of 1 mm. The Nusselt number for the modified GPHE was 1.97 times higher than that of the basic GPHE. Additionally, the frictional pressure drop for the modified heat exchanger was 1.89 times higher than that of the basic heat exchangers. The rate of frictional pressure drop increases at higher Reynolds numbers was higher than the heat transfer coefficient increase for both the basic and modified GPHE. The modified plate heat exchanger shows superior thermal performance to a basic GPHE at any given friction power conditions. Additionally, using metal foam-filled channels in contrast to plain corrugated plate channels suggests that the modified GPHE can achieve a more compact design for the same heat-duty application.

Speakers

Mr. Naresh K Chandora, ME20S053

Department of Mechanical Engineering