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.
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ASME 2013 International Mechanical Engineering Congress and Exposition
November 15–21, 2013
San Diego, California, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5632-1
PROCEEDINGS PAPER
Three Dimensional CFD Simulation of Thermosyphon Flow in an Unglazed Solar Flat Plate Collector
Yagnesh N. Sharma,
Yagnesh N. Sharma
Manipal University, Manipal, KA, India
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Manjunath M. Shivamallaiah,
Manjunath M. Shivamallaiah
Manipal University, Manipal, KA, India
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Vasudeva K. Karanth
Vasudeva K. Karanth
Manipal University, Manipal, KA, India
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Yagnesh N. Sharma
Manipal University, Manipal, KA, India
Manjunath M. Shivamallaiah
Manipal University, Manipal, KA, India
Vasudeva K. Karanth
Manipal University, Manipal, KA, India
Paper No:
IMECE2013-64090, V07BT08A049; 7 pages
Published Online:
April 2, 2014
Citation
Sharma, YN, Shivamallaiah, MM, & Karanth, VK. "Three Dimensional CFD Simulation of Thermosyphon Flow in an Unglazed Solar Flat Plate Collector." Proceedings of the ASME 2013 International Mechanical Engineering Congress and Exposition. Volume 7B: Fluids Engineering Systems and Technologies. San Diego, California, USA. November 15–21, 2013. V07BT08A049. ASME. https://doi.org/10.1115/IMECE2013-64090
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