Design Investigations on Solar Cooking Devices for Rural India
DOI:
https://doi.org/10.13052/dgaej2156-3306.3112Keywords:
Parabolic disc collector; Exergy analysis; Concentration ra - tio; Stagnation temperature; Optimum collector temperature; ambient temperature.Abstract
This article discusses the usefulness of Second Law analysis (ex -
ergy analysis) for comparing and optimizing the performance of solar
collectors. Here, the exergetic formulas for both the parabolic and flat
plate collectors are deduced and a parametric study is made using
hourly solar radiation. The exergy output is optimized with respect
to the collector temperature and different parameters are calculated. It
is found that most of the parameters such as exergy output, exergetic
and thermal efficiencies, stagnation temperature, increases with a rise
in solar intensity for both the collectors. However initially, the value of
exergetic efficiency varies in accordance with the solar intensity but de -
clines further with an increase in solar intensity for parabolic collector.
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References
Bejan, A., Kearney, D.W., Kreith, F., Second law analysis and synthesis of solar collec -
tor systems’, ASME J. Solar Energy Engg, 1981; 103: 23–28.
Bejan, A., Extraction of exergy from solar collectors under time-varying conditions’,
Int. J. Heat Fluid Flow, 1982; 3: 67–72
Dincer, I., Thermal energy storage systems as a key technology in energy conserva -
tion’, International Journal of Energy Research, 2002; 26: 568–588.
Farahat, S., Sahaddi, F. and Ajam, H., Exergetic optimization of flat plate solar collec -
tors’, Renewable Energy, 2009; 34(4):1169–1174.
Funk, P.A., Evaluating the international standard procedure for testing solar cookers
and reporting performance’, Solar Energy, 2000; 68(1):1–7.
Fuziwara, M., Exergy analysis for the performance of solar collectors’, ASME J. Solar
Energy Engg., 1983;105(2):163–167.
Kar, A.K., Exergy optimization of flow rates in flat plate solar collectors’, International
Journal of Energy Research, 1989; 13(3):317–326.
Kar, A.K., Exergy efficiency and optimum operation of solar collectors’, Appl. Energy,
; 21: 301–314.
Kaushik, S.C., Singhal, M.K., Tyagi, S.K., Solar collector technologies for power gen -
eration and space air conditioning applications: A state of the art’, Internal Report,
Centre for Energy Studies, Indian Institute of Technology, Delhi, India 2001.
Kotas, T.J. ‘The Exergy Methods of Thermal Plant Analysis’, Butterworths, Lon -
don,1985.
Kurtbas, I., Durmus, A., Efficiency and exergy analysis of a new solar air heater’, Re -
newable Energy, 2004; 29: 1489–1501.
Misra, R.D. Second Law Assessment of Solar Thermal Power Generation, MTech Major
Thesis, Centre for Energy Studies, Indian Institute of Technology, Delhi,1996.
Orbach, A., Fischl, R., Herczfeld, P.R., Konyk Jr, S. ‘Optimal and suboptimal control
strategies and sensitivity study for solar liquid collector systems’, in: Proc. ISES, At-
lanta, USA, 1979.
Saltiel, C., Sokolov, M., Optimal control of a multi component solar collector system’,
Solar Energy, 1985; 34: 463–473.
Rathore, N., and Shukla, S.K., Experimental investigations and comparison of energy
and exergy efficiencies of the box type and Solar Parabolic Cooker’, Int. J. Energy
Technology and Policy, 2009; 7(2): 201-212.
Singh, N. and Kaushik, S.C. Technology Assessment and Economic Evaluation – Solar
Thermal Power Systems: A State of Art, Report, Centre for Energy Studies, Indian
Institute of Technology, Delhi, India 1993.
Tyagi, S.K., Wang, S., Singhal, M.K., Kaushik, S.C. and Park, S.R., Exergy analysis and
parametric study of concentrating type solar collectors’, International Journal of Ther -
mal Sciences, 2007; (46): 1304–1310.
Winn, R.C., Winn, C.B. (1981) ‘Optimal control of mass flow rate in flat plate solar col -
lectors’, ASME J. Solar Energy Engg, 1981;103:113–120.
WHO (World Health Organization). Addressing the links between indoor air pollu-
tion, household energy and human health. Based on the WHOUSAID Consultation on
the Health Impact of Household Energy in Developing Countries (Meeting Report).
Geneva: World Health Organization; 2002.
S.K. Shukla, Comparison of Energy and Exergy Efficiencies of Community and Do -
mestic Solar Cookers, International Journal of Green Energy, 2009; 6 (5): 437-449.
Altfeld, K., Leiner, W., Fiebig, M., Second law optimization of flat plate solar air heat -
ers. J. Solar Energy. 1988; 41(2): 127-132.
Hepbasli, A., A key review on exergetic analysis and assessment of renewable energy
resources for a sustainable future. J. Renewable and sustainable energy reviews. 2008;
: 593-661.
Howell, J.R., Bannerot, R.B., Optimum solar collector operation for maximizing cycle
work output. J Solar Energy. 1977;19:149-153.
Luminosu, I., Fara, L., Determination of the optimal operation mode of a flat solar col -
lector by exergetic analysis and numerical simulation. J. Energy 2005; 30(5): 731-747.
Mahanta, D.K., Saha, S.K., Internal irreversibility in a water heating solar flat plate
collector. J. Energy Conversion and Management 2002; 43:2425-2435.
Öztürk, H.H., Experimental determination of energy and exergy efficiency of the solar
parabolic-cooker. J. Solar Energy 2004; 77:67-71.
Petala, R., Exergy analysis of the solar cylindrical-parabolic cooker. J. Solar Energy
;79: 221-233.
Rosen, M. A., Second-Law of Analysis: Approach and Implication. International Jour-
nal of Energy Research. 1999; 23: 415-429.
Saha, S. K. and Datta Gupta, K. K., Thermodynamic optimization of solar thermal col -
lectors. Proceedings of National Solar Energy Society of India, Integrated Renewable
Energy for Rural Development, Dec., 1990. 48-51.
Torres-Reyes, E., Cervantes-De Gortari, J.G., Ibarra-Salazar, B.A., Picon-Nuñez, M., A
design method of flat plate solar collectors based on minimum entropy generation. J.
Exergy Int. 2001;1: 46-52.
