年間 18 号発行
ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561
IF:
1.7
5-Year IF:
1.4
Immediacy Index:
0.6
Eigenfactor:
0.00072
JCI:
0.43
SJR:
0.318
SNIP:
0.568
CiteScore™::
3.5
H-Index:
28
Indexed in
THERMAL BEHAVIOR OF THE POT-IN-POT REFRIGERATOR: SIMULATION AND EXPERIMENTAL APPROACH
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要約
Evaporative cooling is basically a passive cooling technique in which a body is cooled by the evaporation of water from its surface. The paper deals with the two-dimensional unsteady mathematical model for a clay pot refrigerator and validated with the experimental results obtained in the environment chamber. The tests were conducted at different relative humidities and dry bulb temperatures and the test results were utilized to obtain the pot efficiency, COP, and the variation of other parameters with the ambient conditions. The presence of the porous medium as clay and sand was given a special attention in modeling the clay pot. The results were also validated with numerical code developed for the above case. The effects of ambient conditions on mass transfer coefficient, evaporation loss, hydraulic conductivity of clay and sand were studied and analyzed.
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Anyanwu, E.E., Design and Measured Performance of a Porous Evaporative Cooler for Preservation of Fruits and Vegetables, Energy Convers. Manage., vol. 45, pp. 2187-2195, 2004.
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Boelter, L.M.K., Gordon, H.S., and Griffin, J.R., Free Evaporation into Air of Water from a Free Horizontal Quiet Surface, Ind. Eng. Chem., vol. 38, pp. 596-600, 1946.
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Chilton, T.H. and Colburn, A.P., Mass Transfer (Absorption) Coefficients, Ind. Eng. Chem., vol. 26, no. 11, pp. 1183-1187, 1934.
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Date, A.W., Heat and Mass Transfer Analysis of a Clay-Pot Refrigerator, Int. J. Heat Mass Transf., vol. 55, no. 15, pp. 3977.
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Datta, A., Porous Media Approaches to Studying Simultaneous Heat and Mass Transfer in Food Processes. II: Property Data and Representative Results, J. Food Eng., vol. 80, no. 1, pp. 96-110, 2007.
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Melling, A., Noppenberger, S., Still, M., and Venzke, H., Interpolation Correlations for Fluid Properties of Humid Air in the Temperature Range 100oC to 200oC, J. Phys. Chem. Ref. Data, vol. 26, no. 4, pp. 1111-1123, 1997.
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Mittal, A., Kataria, T., Das, G.K., and Chatterjee, S.G., Evaporative Cooling of Water in a Small Vessel under Varying Ambient Humidity, Int. J. Green Energy, vol. 3, no. 4, pp. 347-368, 2006.
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Neale, A., Derome, D., Blocken, B., and Carmeliet, J., Coupled Simulation of Vapor Flow between Air and a Porous Material, Proc. X Conf. "Performance of Exterior Envelopes of Whole Bulding," Atlanta: ASHRAE, 2007.
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Pryor, R.W., Multiphysics Modeling Using COMSOL, New Dehli: Laxmi Publications, 2011.
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Sman, R.G.M.V., Simple Model for Estimating Heat and Mass Transfer in Regular-Shaped Foods, J. Food Eng., vol. 60, no. 4, pp. 383-390, 2003.
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Tsilingiris, P., Thermophysical and Transport Properties of Humid Air at Temperature Range between 0 and 100oC, Energy Convers. Manage., vol. 49, no. 5, pp. 1098-1110, 2008.
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Vafai, K., Handbook of Porous Media, Boca Raton, FL: Taylor & Francis, 2005.