Second law optimization and parametric study of a solar air heater having artificially roughened absorber plate

• Autorzy: Sahu Mukesh Kumar , Prasad Radha Krishna

Identyfikatory

DOI

10.24425/ather.2019.129544

• Języki publikacji: EN

Abstrakty

EN

In present article a mathematical model of arc shape wire roughened solar air heater, on the basis of energy and exergy output rates, entropy generation rate and augmentation entropy generation number, has been developed. A parametric study leading to entropy generation minimization has also been performed. In the analysis the geometric and operating parameters which have been considered as variable are: inlet air temperature, duct depth, collector width to duct depth ratio, mass flow rate per unit collector area, and temperature rise parameter. Results have been presented to see the effects of these values on the energy and exergy output rates of the roughened solar air heater. Effect of different values of wire rib roughness parameters on entropy generation has also been presented. Finally, design curves and optimization for different rib roughness parameters on the basis of minimum entropy generation number with temperature rise parameter, have been presented and optimum values also have been found out 0.004 to 0.010 (Km2 )/W. The entropy generation rate obtained for the system, in the present work has been compared with those obtained for solar air heater with different roughness geometries on absorber plates available in the literature for common roughness parameters and operating parameters which validate the present results.

Słowa kluczowe

EN

artificial roughness; entropy generation; entropy generation minimization; augmentation entropy generation number; solar air heater

PL

źródło entropii; minimalizacja; powietrzny kolektor słoneczny

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2019
• Tom: Vol. 40, no 2
• Strony: 107--135
• Opis fizyczny: Bibliogr. 36 poz., rys., tab., wz.

Twórcy

autor

Sahu Mukesh Kumar

• Department of Mechanical Engineering, National Institute of Technology, Jamshedpur, Jharkhand, India, Pin-831014

autor

Prasad Radha Krishna

• Department of Mechanical Engineering, National Institute of Technology, Jamshedpur, Jharkhand, India, Pin-831014

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).