Three dimensional CFD simulation of thermosyphon flow in an unglazed solar flat plate collector

Yagnesh N. Sharma, Manjunath M. Shivamallaiah, Vasudeva K. Karanth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Thermosyphon unglazed solar flat plate collectors have been widely used all over the world to harness solar energy for generating hot water for various applications. This is mainly due to the passive nature of the system besides being simple in design. However, flat plate collectors are associated with higher heat losses from the surface leading to lower thermal performance. Hence, there is a dire need to optimize the thermal design aspects of the flat plate collector in order to achieve higher thermal performance. In this paper, the results of a full three dimensional CFD simulation of thermosyphon flow in an unglazed solar flat plate collector are presented. It is observed from the parametric study that there are interesting trends for the temperature distribution of the absorber plate and loop water for various simulated solar heat flux inputs. This analysis also brings out the effect of various simulated heat fluxes on the mass flow rates in the collector loop. The results of this CFD simulation study provide an insight into the behavior of the thermosyphon solar flat plate collector under various operating conditions and hence will be further helpful to undertake optimization for enhanced thermal performance of the collector.

Original languageEnglish
Title of host publicationFluids Engineering Systems and Technologies
PublisherAmerican Society of Mechanical Engineers(ASME)
Volume7 B
ISBN (Print)9780791856321
DOIs
Publication statusPublished - 01-01-2013
EventASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States
Duration: 15-11-201321-11-2013

Conference

ConferenceASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013
CountryUnited States
CitySan Diego, CA
Period15-11-1321-11-13

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Sharma, Y. N., Shivamallaiah, M. M., & Karanth, V. K. (2013). Three dimensional CFD simulation of thermosyphon flow in an unglazed solar flat plate collector. In Fluids Engineering Systems and Technologies (Vol. 7 B). American Society of Mechanical Engineers(ASME). https://doi.org/10.1115/IMECE2013-64090