A numerical model for the simulation of double-diffusive natural convection in a triangular solar collector

Rahman, M.M. and Rahim, N.A. and Amin, N. and Saidur, Rahman (2011) A numerical model for the simulation of double-diffusive natural convection in a triangular solar collector. In: 2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011, 2011, Kuala Lumpur.

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Abstract

A numerical model is presented for the simulation of double-diffusive natural convection in a triangular solar collector. This design is encountered in greenhouse solar stills where vertical temperature and concentration gradients between the saline water and transparent cover induce flows in a confined space. This phenomenon plays an important function in the water distillation process and in the biological comfort. In this double-diffusion problem, the ratio Br of the relative magnitude thermal and compositional buoyancy and Rayleigh numbers are key parameters. Finite element technique is used to solve the governing equations. Numerical results are presented for the effect of the above-mentioned parameters on local heat and mass transfer rate. In addition, results for the average heat and mass transfer rate are offered and discussed for the mentioned parametric conditions. Some interesting results are found in this investigation.

Item Type:	Conference or Workshop Item (Paper)
Funders:	UNSPECIFIED
Additional Information:	Conference code: 87112 Export Date: 6 December 2012 Source: Scopus Art. No.: 6041485 doi: 10.1109/CET.2011.6041485 Language of Original Document: English Correspondence Address: Rahman, M.M.; Centre of Research UMPEDAC, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; email: m71ramath@gmail.com References: Boukar, M., Harmim, A., Performance evaluation of a one-sided vertical solar still tested in the Desert of Algeria (2005) Desalination, 183, pp. 113-126; Boukar, M., Harmim, A., Design parameters and preliminary experimental investigation of an indirect vertical solar still (2007) Desalination, 203 (1-3), pp. 444-454. , DOI 10.1016/j.desal.2006.02.026, PII S001191640601294X; Omri, A., Orfi, J., Nasrallah, S.B., Natural convection effects in solar stills (2005) Desalination, 183 (1-3), pp. 173-178. , DOI 10.1016/j.desal.2005.04.025, PII S0011916405004996; Omri, A., Numerical investigation on optimization of a solar distiller dimensions (2007) Desalination, 206 (1-3), pp. 373-379. , DOI 10.1016/j.desal.2006.03.574, PII S0011916406014366; Varol, Y., Oztop, H.F., Buoyancy induced heat transfer and fluid flow inside a tilted wavy solar collector (2007) Building and Environment, 42 (5), pp. 2062-2071. , DOI 10.1016/j.buildenv.2006.03.001, PII S0360132306000746; Selcuk, K., Thermal and economic analysis of the overlapped glass plate solar-air heaters (1971) Solar Energy, 13, pp. 165-191; Sodha, M.S., Kumar, A., Tiwari, G.N., Tyagi, R.C., SIMPLE MULTIPLE WICK SOLAR STILL: ANALYSIS AND PERFORMANCE (1981) Solar energy, 26 (2), pp. 127-131. , DOI 10.1016/0038-092X(81)90075-X; Joudi, K.A., Hussein, I.A., Farhan, A.A., Computational model for a prism shaped storage solar collector with a right triangular cross section (2004) Energy Conversion Management, 45, pp. 391-409; Tiwari, G.N., Kupfermann, A., Agrawal, S., A new design of double condensing chamber solar still (1997) Desalination, 114, pp. 153-164; Coffey, J.P., Vertical solar distillation (1975) Solar Energy, 17, pp. 375-378; Suneja, S., Tiwari, G.N., Optimization of number of effects for higher yield from an inverted absorber solar still using the Runge-Kutta method (1998) Desalination, 120 (3), pp. 197-209. , PII S0011916498002185; Tanaka, H., Nosoko, T., Nagata, T., Parametric investigation of a basin-type-multiple-effect coupled solar still (2000) Desalination, 130 (3), pp. 295-304. , DOI 10.1016/S0011-9164(00)00093-X, PII S001191640000093X; Kent, E.F., Numerical analysis of laminar natural convection in isosceles triangular enclosures for cold base and hot inclined walls (2009) Mechanics Research Communications, 36, pp. 497-508
Uncontrolled Keywords:	double-diffusion, finite element method, saline water, Solar collector, transparent cove, Concentration gradients, Confined space, Double diffusion, Double-diffusive natural convection, Finite Element, Finite element techniques, Governing equations, Heat and mass transfer, Key parameters, Local heat, Numerical models, Numerical results, Parametric conditions, Rayleigh number, Solar stills, Vertical temperature, Water distillation, Bromine, Computer simulation, Distillation, Heat transfer, Mass transfer, Natural convection, Numerical methods, Solar collectors, Solar heating, Thermoelectricity, Solar energy.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering
Depositing User:	Mr Jenal S
Date Deposited:	04 Jul 2013 04:06
Last Modified:	25 Oct 2019 06:03
URI:	http://eprints.um.edu.my/id/eprint/6621

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