An Experimental Investigation of the Energy and Exergy Efficiency of Extended Surface Solar Air Heaters
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2015 by IJETT Journal|
|Year of Publication : 2015|
|Authors : Yusuf Bilgiç, Cengiz Yıldız
|DOI : 10.14445/22315381/IJETT-V21P261|
Yusuf Bilgiç, Cengiz Yıldız"An Experimental Investigation of the Energy and Exergy Efficiency of Extended Surface Solar Air Heaters", International Journal of Engineering Trends and Technology (IJETT), V21(7),328-334 March 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
In this study, the energy and exergy efficiencies of newly developed four different solar air collectors have been investigated experimentally. The developed air heaters were compared with conventional type heaters. Solar air heaters with dimensions of 900 mm x1900 mm x170 mm have been used in the experiments. The experiments were carried out at mass flow rates of 0.02 kg/s , 0.04 kg/s and 0.06 kg/s. Collector outlet temperature, absorber surface temperature, glass door temperature, ambient temperature, solar radiation value and wind speeds were measured. Energy and exergy efficiencies have been calculated according to the data acquired from the experiments. It has been determined as a result of the experiments that the energy efficiency of the conventional type heater at a mass flow rate of 0.06 kg/s is %42, whereas that of Type-III is % 77.1 ; and that the exergy efficiency of the conventional system is mass flow rate of 0,02 kg/s is %8.31 whereas that of Type III is %30.32. It has been observed that the energy and exergy efficiencies of Type-III are higher in comparison with other types.
 H. Esen, “Experimental Energy and Exergy Analysis of A Double- Flow Solar Air Heater Having Different Obstacles on Absorber Plates,” Building and Environment, vol.43 , pp.1046–1054,2008.
 V.S. Hans , R.P. Saini and J.S. Saini, “ Heat Transfer and Friction Factor Correlations For A Solar Air Heater Duct Roughened Artificially With Multiple V-Ribs,” Solar Energy,vol. 84 ,pp. 898–911. 2010.
 A.A. El-Sebaii , S. Aboul-Enein , M.R.I. Ramadan , S.M. Shalaby and B.M. Moharram, “ Investigation of Thermal Performance of-Double Pass-Flat and V-Corrugated Plate Solar Air Heaters,” Energy, vol.36 , pp. 1076-1086, 2011.
 A.A. El-Sebaii, H. Al-Snani, “ Effect of selective coating on thermal performance of flat plate solar air heaters, “ Energy, vol.35, pp.1820– 1828, 2010.
 S. Karsli, “Performance Analysis of New-Design Solar Air Collectors for Drying Applications,” Renewable Energy,vol.32, pp.1645–1660, 2007.
 N. Moummi, S. Youcef-Ali, A. Moummi and J.Y. Desmons, “ Energy Analysis of A Solar Air Collector Withrows of Fins,” Renewable Energy,”vol. 29 , pp.2053–2064, 2004.
 M.A. Karim and M.N.A. Hawlader, “Development of Solar Air Collectors for Drying Applications,” Energy Conversion and Management , vol.45, pp.329–344, 2004.
 M.A. Karim and M.N.A. Hawlader, “ Performance Evaluation of A VGroove Solar Air Collector For Drying Applications,” Applied Thermal Engineering , vol.26, pp. 121–130,2006.
 D. Peng, X. Zhang, H. Dong and L. Kun, “ Performance Study of A Novel Solar Air Collector,” Applied Thermal Engineering ,vol.30, pp. 2594-2601,2010 .
 T. Koyuncu, “Performance of Various Design of Solar Air Heaters For Crop Drying Applications,” Renewable Energy, vol.31, pp.1073–1088.
 G. Alvarez, J. Arce, L. Lira and M.R. Heras, “Thermal Performance of An Air Solar Collector With An Absorber Plate Made of Recyclable Aluminum Cans”, Solar Energy, vol. 77, pp. 107–113 2004.
 C.Alok, P.K. Sahoo and S.C. Solanki, “Analysis of Heat Transfer Augmentation and Flow Characteristics Due to Rib Roughness Over Absorber Plate of A Solar Air Heater,” Renewable Energy ,vol.31, pp.317–331,2006.
 E. K. Akpinar and F. Koçyi?it, “Energy and Exergy Analysis of A New Flat-Plate Solar Air Heater Having Different Obstacles on Absorber Plates,” Applied Energy vol. 87, pp.3438–3450,2010.
 Y.A. Çengel and M.A. Boles, Termodinamik Mühendislik yakla??m?yla . 5th ed., A.P?narba?? Ed. , ?zmir, Güven Bilimsel, 2011.
Solar Energy, Solar Air Heater, Solar air collector.