Exergy analysis of serpentine thermosyphon solar water heater

Muhammad Faisal Hasan, Md Sayeed Ur Rahim Mahadi, Takahiko Miyazaki, Shigeru Koyama, Thu Kyaw

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The performance of a solar hot water system is assessed for heat pump and domestic heating applications. Thermodynamic analysis on a serpentine-type thermosyphon flat-plate solar heater is conducted using the Second Law of thermodynamics. Exergetic optimization is first performed to determine the parameters for the maximum exergy efficiency using MATLAB optimization toolbox. Geometric parameters (collector surface area, dimensions, and pipe diameter), optical parameters (transmittance absorptance product), ambient temperature, solar irradiation and operating parameters (mass flow rate, fluid temperature, and overall heat transfer (loss) coefficient) are accounted for in the optimization scheme. The exergy efficiency at optimum condition is found to be 3.72%. The results are validated using experimental data and found to be in good agreement. The analysis is further extended to the influence of various operating parameters on the exergetic efficiency. It is observed that optical and thermal exergy losses contribute almost 20%, whereas approximately 77% exergy destruction is contributed by the thermal energy conversion. Exergy destruction due to pressure drop is found negligible. The result of this analysis can be used for designing and optimization of domestic heat pump system and hot water application.

Original languageEnglish
Article number391
JournalApplied Sciences (Switzerland)
Volume8
Issue number3
DOIs
Publication statusPublished - Mar 7 2018

Fingerprint

thermosiphons
Solar water heaters
exergy
Thermosyphons
Exergy
heaters
heat pumps
optimization
water
destruction
Thermodynamics
thermodynamics
absorptance
Heat pump systems
Water
mass flow rate
energy conversion
flat plates
pressure drop
Thermal energy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Cite this

Exergy analysis of serpentine thermosyphon solar water heater. / Hasan, Muhammad Faisal; Mahadi, Md Sayeed Ur Rahim; Miyazaki, Takahiko; Koyama, Shigeru; Kyaw, Thu.

In: Applied Sciences (Switzerland), Vol. 8, No. 3, 391, 07.03.2018.

Research output: Contribution to journalArticle

Hasan, Muhammad Faisal ; Mahadi, Md Sayeed Ur Rahim ; Miyazaki, Takahiko ; Koyama, Shigeru ; Kyaw, Thu. / Exergy analysis of serpentine thermosyphon solar water heater. In: Applied Sciences (Switzerland). 2018 ; Vol. 8, No. 3.
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