An Exergy Based Unified Test Protocol for Solar Cookers of Different Geometries

Naveen Kumar
IIITD&M Kancheepuram, IIT Madras Campus, India

G. Vishwanath
IIITD&M Kancheepuram, IIT Madras Campus, India

Anurag Gupta
IIITD&M Kancheepuram, IIT Madras Campus, India

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110573741

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:10, s. 3741-3748

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Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


It is good for the consumer to have solar cookers of various varieties in terms of geometrical designs; performance and price but it is a challenge to develop a uniform test standard for evaluating the thermal performance of the cookers irrespective of their geometrical construction. Due to the lack of uniform test protocol; consumer cannot compare the quantitative performance of the cookers of different configuration and become confused. For this end; we plotted graphs between exergy output and temperature difference; for solar cookers of different designs and it resembled a parabolic curve for each design. The peak exergy (vertex of the parabola); can be accepted as a measure of devices’ fuel ratings. The ratio of the peak exergy gained to the exergy lost at that instant of time can be considered as the quality factor of the solar cooker. Besides; the exergy lost is found to vary linearly with temperature difference irrespective of the topology of the device and the slope of the straight line obtained through curve fitting represents the heat loss coefficient of the cooker. The proposed parameters can lead to development of unified test protocol for solar cookers of diversified designs.


Solar Cookers; Test Protocol; Exergy Analysis


[1] Mullick; S.C.; Kandpal; T. C.; Subodh Kumar; 1996. Testing of box-type solar cookers: second figure of merit F2 and its variation with load and number of pots. Solar Energy 57(5); 409-413. doi: 10.1016/S0038-092X(96)00116-8.

[2] BIS 2000. IS 13429 (part 3): 2000. Indian Standards Solar – Box Type- Specification Part 3 Test Method (First Revision) New Delhi: Bureau of Indian Standards.

[3] Funk; P. A.; 2000. Evaluating the international standard procedure for testing solar cookers and reporting performance; Solar Energy. 68(1); 1-7. doi: 10.1016/S0038-092X(99)00059-6.

[4] S.C. Mullick; T. C. Kandpal and Subodh Kumar; ‘Thermal test procedure for a paraboloid concentrator solar cooker’; Solar Energy; 46(3); 139- 144; 199. doi: 10.1016/0038-092X(91)90087-D.

[5] Petela; R.; 2003. Exergy of undiluted thermal radiation. Solar Energy; 74; 469-488. doi: 10.1016/S0038-092X(03)00226-3.

[6] Petela; R.; 2010. Engineering Thermodynamics of Thermal Radiation for Solar Power Utilization; McGraw-Hill; New York.

[7] Kaushik; S.C.; Gupta; M. K.; 2008. Energy and exergy efficiency comparison of community-size and domestic-size paraboloidal solar cooker performance; Energy for Sustainable Development. 3; 60-64. doi: 10.1016/S0973-0826(08)60440-8.

[8] Ozturk; H.H.; 2004. Experimental determination of energy and exergy efficiency of solar parabolic-cooker. Solar Energy; 77; 67-71. doi: 10.1016/j.solener.2004.03.006.

[9] Ozturk; H.H.; 2007. Comparison of energy and exergy efficiency for solar box and parabolic cookers. J. Energy Engg.; 133(1); 53-62. doi: 10.1061/(ASCE)0733-9402(2007)133:1(53).

[10] http://www.mnre.gov.in/pdf/test-proc-dish-cooker.pdf

[11] Subodh Kumar; 2004.Thermal performance study of box type solar cooker from heating characteristic curves. Energy Conversion and Management; 45; 127-139.. doi: 10.1016/S0196-8904(03)00103-1.

[12] Mullick; S.C.; Kandpal; T. C.; Saxena; A. K.; 1987. Thermal test procedure for box-type solar cookers. Solar Energy 39(4); 353-360. doi: 10.1016/S0038-092X(87)80021-X.

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