Experimental study with analytical validation of thermo-hydraulic performance of plate heat exchanger with different chevron angles

Arunachala, U C and Ajay, R K and Sandeep, H M (2016) Experimental study with analytical validation of thermo-hydraulic performance of plate heat exchanger with different chevron angles. International Journal of Mining, Metallurgy & Mechanical Engineering, 4 (1). pp. 47-54. ISSN 2320–4060

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Abstract

The Plate heat exchanger is prominent among all alternatives to the conventional shell and tube heat exchanger because of simplicity in operation, maintenance, and high surface area density. Currently lot of research is going on to optimize the design by considering thermo-hydraulic performance. In the present study, an extensive analytical model is developed using MATLAB® to study the thermo-hydraulic characteristics of Plate heat exchanger with high beta (60°/60°), low beta (30°/30°) and thermally mixed (30°/60°) plate configurations. Further, the experimental investigation is carried out to validate the analytical model and it reveals that the maximum deviation of ±10% considering both hot and cold fluid outlet temperature with respect to different flow rates in case of all the three plate configurations. To incorporate the effect of rise in pressure drop with different chevron plate configurations, the term thermohydraulic effectiveness is introduced. In all cases, it is found to be highest for high beta plates and least for low beta plates. Whereas for thermally mixed plates, the values lies between high and low beta plates being more closer towards high beta plates. This indicates that the thermal performance of thermally mixed plates is nearly match with the high beta plates but the pressure drop being lesser than the latter. A generalized correlation to estimate the Nusselt number has been developed with a relative standard error of ±18%. The Nusselt number predicted from the developed correlation is found to be in good agreement with experimental results compared to the values predicted from different correlation in the literature.

Item Type: Article
Uncontrolled Keywords: Chevron angle, correlation, Thermal mixing, thermohydraulic effectiveness.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 06 Jan 2017 09:46
Last Modified: 06 Jan 2017 09:46
URI: http://eprints.manipal.edu/id/eprint/147914

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