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Studies on solar chimney type agricultural crop dryer

Prabha Humberi, Shankar Badiger, Abhilasha Paschapur

Abstract


A natural convection solar chimney type dryer is studied experimentally to investigate the drying temperature distribution and drying rate of the crop. The dryer has been built with black painted solar collector and the chimney attached to create the draft. The performance of the solar chimney type dryer was carried out for the varying the different air inlet gaps. The temperature study showed that the maximum temperature is seen at the base of the chimney and near the base. The solar chimney type dryer can be utilized effectively to dry the crop by keeping the crop near the base of the chimney where there is a maximum temperature is seen. The drying time of the crop were reduced by 50% for the air entrance gap of 5 mm as compared to the open sun drying.

Keywords


Solar chimney; Agriculture; solar energy; drying; Grapes

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References


S.Esakkimuth, Abdel Hakim Hassabou, C.Palaniappan, Markus Spinnler, Jurgen Blumenberg, R.Velraj, Experimental investigation on phase change material based thermal staorage system for solar air heating applications, Solar Energy 88 (2013) 44-153.

N.T.Ahmad, Agricultural solar air collector made from low cost plastic packing film, Renewable Energy 23(2001)663-671.

Adisu Bekcle, Manish Mishra, Shushanta Dutta, Performance characteristics of solar air heater with surface mounted obstacles, Energy conversion and Management 85(2014)603-611.

A.Abene, V.Dubois, N.LeRay, A.Ouagued, Study of solar air flat plate collector: Use of obstacles and application for the drying of grape, Journal of Food Engineering 65(2004)15-22.

Magdalena Nem’s, Jacel Kasperski, Experimental investigation of concentrated solar air heater with internal multiple fin array, Renewable Energy 97(2016)722-730

Khalid A.Joudi and Ammar A .Farhan, Greenhouse heating by solar air heaters on the roof, Renewable Energy 72(2014)406-414.

Farooq R.Siddiqui, Nabil A.S.Elminshawy, Mohammad F.Addas, Design and performance improvement of a solar desalination system by using solar air heater: Experimental and theoretical approach, Desalinatio 399(2016)78-87.

HussainH. Al-Kayiem, TadahmunA.Yassen, On the natural convection heat transfer in a rectangular passage solar air heater, Solar Energy 112(2015) 310-318.

Schlaich J. The solar chimney: electricity from the sun. Stuttgart: Deutsche Verlags-Anstalt; 1994.

Haaf Y, Friedrich K, Mayr G, Schlaich J. Solar chimneys, part I: principle and construction of the pilot plant in Manzanares. Int J Sol Energy 1983;2:3–20.

Haaf W. Solar chimneys, part II: preliminary test results from the Manzanares pilot plant. Int J Sol Energy 1984;2:141–61.

Schlaich J, Bergermann R, Schiel W, Weinrebe G. Design of commercial solar updraft tower systems utilization of solar induced convective flows for power generation. J Sol Energy Eng 2005;127:117–24.

Pasumarthi N, Sherif SA. Experimental and theoretical performance of a demonstration solar chimney model- part I: mathematical model development. Int J Energy Res 1998;22(3):277–88.

Pasumarthi N, Sherif SA. Experimental and theoretical performance of a demonstration solar chimney model-part II: experimental and theoretical results and economic analysis. Int J Energy Res 1998;22(5):443–61.

Padki M, Sherif SA. On a simple analytical model for solar chimneys. Int J Energy Res 1999;23(4):345–9.

Yan MQ, Sherif SA, Kridli GT, Lee SS, Padki MM. Thermo-fluid analysis of solar chimneys. In: Morrow, Marshall, Sherif, editors, Industrial Applications of Fluid Mechanics, FED, the American Society of Mechanical Engineers, vol. 132. 1991. p. 125–30.

Gannon AJ, Von Backström TW. Controlling and maximizing solar chimney power output. In: Proceedings of the 1st International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Kruger Park, South, Africa, 2002.

Kröger DG, Buys JD. Performance evaluation of a solar chimney power plant. Adelaide, Australia: ISES 2001 Solar World Congress; 2001.

Gannon AJ, Von Backström TW. Solar chimney turbine performance. J Solar Energy Eng 2003;125:101–6.

Bernardes MA, Dos S, Voß A, Weinrebe G. Thermal and technical analyses of solar chimneys. Sol Energy 2003;75(6):511–24.

Zhou X, Yang J, Xiao B, Hou G, Xing F. Analysis of chimney height for solar chimney power plant. Appl Therm Eng 2009;29:178–85.


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