Open AccessHeat Transfer Intern Coefficient Determination in the Process of Solar Still
Author(s) -
S Chávez,
H Terrés,
A Lizardi,
Rosa María Tejero López,
Alvaro R. Lara
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1221/1/012032
Subject(s) - heat transfer coefficient , thermodynamics , internal heating , brine , convection , thermal , evaporation , mass transfer , materials science , heat transfer , radiation , distillation , work (physics) , mechanics , chemistry , optics , physics , chromatography
In this work, a study of internal heat transfer coefficients is performed in a solar still of a slope is presented, when it operated with brine. The estimate is based on the experimental observation of the solar still for 4 different initial volumes (2, 4, 6 y 8 L), under the climatic conditions of the city of Mexico. The internal coefficients to evaluate are: convection, evaporation and radiation through the use of the thermal model proposed by Kumar and Tiwari. As a result it was found that the internal coefficient more representative in the process of solar distillation is the evaporation ( h E , w-g ), reaching a maximum of 30 W/m 2 K, the coefficients of convection ( h c , w-g ), and radiation ( h R , w-g ),attained values of 2.5 W/m 2 K and 4 W/m 2 K respectively. It was also noted that as the initial volume of brine increases, the internal heat transfer coefficients decrease.