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Journal of Energy in Southern Africa

versão On-line ISSN 2413-3051

Resumo

KUMAR, Mahesh. Experimental study on natural convection greenhouse drying of papad. J. energy South. Afr. [online]. 2013, vol.24, n.4, pp. 37-43. ISSN 2413-3051.

In this paper, the convective heat transfer coefficients of papad for greenhouse drying under a natural convection mode are reported. Various experiments were conducted during the month of April 2010 at Guru Jambheshwar University of Science and Technology Hisar, India (29o5'5" N 75o45'55" E). Experimental data obtained for the natural convection greenhouse drying of papad was used to evaluate the constants in the Nusselt number expression by using simple linear regression analysis. These values of the constant were used further to determine the values of the convective heat transfer coefficient. The average value of a convective heat transfer coefficient was determined as 1.23 W/m2oC. The experimental error in terms of percent uncertainty was also evaluated.

Palavras-chave : papad; papad drying; convective heat transfer coefficient; natural convection greenhouse.

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