Thermal absorber material selection for solar thermal Bi‐Metallic multilayer crosses absorber

Abd Razak, Nuradhiathy and Abdul Majid, Zafri Azran and Ruslan, Mohd Hafidz and Sopian, Kamaruzaman (2016) Thermal absorber material selection for solar thermal Bi‐Metallic multilayer crosses absorber. International Journal of Advanced and Applied Sciences, 3 (8). pp. 57-60. ISSN 2313-626X E-ISSN 2313-3724

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Abstract

The energy gain term determines the level of energy received by the solar absorber from solar radiation and various methods have been implemented to increase the collector performance using a bi-metallic cross absorber. Experiments have been conducted to determine suitable material pairing between the bi-metallic cross absorber and black coated flat-plate absorber. Five types of solar thermal absorbers are investigated under condition 525 W/m2 of solar radiation and with 0.52 m/s air flow speed in terms of heating and cooling performance. Four set stainless steel cross absorbers achieved best energy retention capability by obtaining the slope value of -0.1520 during the cooling phase while during the heating phase, coated flat plate performed well with a slope value of 0.4909. The profile of the thermal absorber with thermal absorption and thermal buffer can be summarized using a spider chart with distance index bar-chart, and the result shows that a bi-metallic, aluminium and stainless steel cross absorber exhibit the optimal balanced thermal profile. With the implementation of the material selection method could minimize the material selection process for cross absorber application.

Item Type:	Article (Journal)
Additional Information:	4556/58451
Uncontrolled Keywords:	Solar air heater, Bi-metallic cross absorber, Matrix absorber, Solar thermal
Subjects:	T Technology > TH Building construction > TH7005 Heating and ventilation
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Allied Health Sciences
Depositing User:	Dr. Zafri Azran Abdul Majid
Date Deposited:	06 Oct 2017 16:17
Last Modified:	06 Oct 2017 16:17
URI:	http://irep.iium.edu.my/id/eprint/58451

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