Effect of Solar Heat Flux and Thermal Loading on the Flow Distribution within the Riser Pipes of a Closed-Loop Solar Thermo-syphon Hot Water System

Basim Freegah, Taimoor Asim, Rakesh Mishra, Kuldip Ubbi

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

Abstract

Solar energy is one of the main sources of renewable energy that is abundantly available throughout the world. Solar energy can be used for useful purposes through a number of mechanical artefacts. One such artefact is known as Thermo-syphon, which typically contains water as its working fluid. One of the major applications of Thermo-syphon is within the residential and industrial units, where a constant supply of hot water is required. The use of Computational Fluid Dynamics (CFD) based solvers has recently been proven capable of predicting the flow behaviour within thermo-syphons with reasonable accuracy. Hence, the present study focuses on using a commercial CFD based solver to predict the flow behaviour within the riser pipes of a thermo-syphon with varying solar heat flux and thermal loading conditions. In order to qualitatively and quantitatively analyse the flow structure within the riser pipes of the thermo-syphon, velocity magnitude and static temperature distributions within these pipes is analysed in detail. The results depict that the solar heat flux has a significant impact on the velocity magnitude and static temperature profiles within the riser pipes. Furthermore, it has been observed that the thermal loading has negligible effects on the velocity magnitude and static temperature profiles within the riser pipes. The data has also been used to develop novel design correlations.
LanguageEnglish
Title of host publication28th International Congress on Condition Monitoring and Diagnostic Engineering Management
Pages398-405
Number of pages8
Publication statusPublished - Sep 2018
Event28th International Congress of Condition Monitoring and Diagnostic Engineering - AAENDE, Buenos Aires, Argentina
Duration: 1 Dec 20154 Dec 2015
Conference number: 28

Conference

Conference28th International Congress of Condition Monitoring and Diagnostic Engineering
Abbreviated titleCOMADEM 2015
CountryArgentina
CityBuenos Aires
Period1/12/154/12/15

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Siphons
Heat flux
Pipe
Water
Solar energy
Computational fluid dynamics
Flow structure
Temperature distribution
Hot Temperature
Temperature
Fluids

Cite this

Freegah, B., Asim, T., Mishra, R., & Ubbi, K. (2018). Effect of Solar Heat Flux and Thermal Loading on the Flow Distribution within the Riser Pipes of a Closed-Loop Solar Thermo-syphon Hot Water System. In 28th International Congress on Condition Monitoring and Diagnostic Engineering Management (pp. 398-405)
Freegah, Basim ; Asim, Taimoor ; Mishra, Rakesh ; Ubbi, Kuldip. / Effect of Solar Heat Flux and Thermal Loading on the Flow Distribution within the Riser Pipes of a Closed-Loop Solar Thermo-syphon Hot Water System. 28th International Congress on Condition Monitoring and Diagnostic Engineering Management. 2018. pp. 398-405
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abstract = "Solar energy is one of the main sources of renewable energy that is abundantly available throughout the world. Solar energy can be used for useful purposes through a number of mechanical artefacts. One such artefact is known as Thermo-syphon, which typically contains water as its working fluid. One of the major applications of Thermo-syphon is within the residential and industrial units, where a constant supply of hot water is required. The use of Computational Fluid Dynamics (CFD) based solvers has recently been proven capable of predicting the flow behaviour within thermo-syphons with reasonable accuracy. Hence, the present study focuses on using a commercial CFD based solver to predict the flow behaviour within the riser pipes of a thermo-syphon with varying solar heat flux and thermal loading conditions. In order to qualitatively and quantitatively analyse the flow structure within the riser pipes of the thermo-syphon, velocity magnitude and static temperature distributions within these pipes is analysed in detail. The results depict that the solar heat flux has a significant impact on the velocity magnitude and static temperature profiles within the riser pipes. Furthermore, it has been observed that the thermal loading has negligible effects on the velocity magnitude and static temperature profiles within the riser pipes. The data has also been used to develop novel design correlations.",
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Freegah, B, Asim, T, Mishra, R & Ubbi, K 2018, Effect of Solar Heat Flux and Thermal Loading on the Flow Distribution within the Riser Pipes of a Closed-Loop Solar Thermo-syphon Hot Water System. in 28th International Congress on Condition Monitoring and Diagnostic Engineering Management. pp. 398-405, 28th International Congress of Condition Monitoring and Diagnostic Engineering, Buenos Aires, Argentina, 1/12/15.

Effect of Solar Heat Flux and Thermal Loading on the Flow Distribution within the Riser Pipes of a Closed-Loop Solar Thermo-syphon Hot Water System. / Freegah, Basim; Asim, Taimoor; Mishra, Rakesh; Ubbi, Kuldip.

28th International Congress on Condition Monitoring and Diagnostic Engineering Management. 2018. p. 398-405.

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

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Freegah B, Asim T, Mishra R, Ubbi K. Effect of Solar Heat Flux and Thermal Loading on the Flow Distribution within the Riser Pipes of a Closed-Loop Solar Thermo-syphon Hot Water System. In 28th International Congress on Condition Monitoring and Diagnostic Engineering Management. 2018. p. 398-405