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ARTICLE
Year : 2014  |  Volume : 4  |  Issue : 2  |  Page : 110-114

Forced Convection Drying of Khoa: A Heat Desiccated Milk Product


Department of Mechanical Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India

Correspondence Address:
Mahesh Kumar
Department of Mechanical Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0976-8580.141182

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In this research paper, the convective heat transfer coefficients for khoa drying under indoor forced convection mode by hot air are delineated. The convective heat transfer coefficients have been determined for khoa sample of size 0.09 Χ 0.06 Χ 0.015 m 3 . The khoa sample has been dried as single thin layer for three consecutive days with the help of laboratory dryer until no variation in its mass is recorded. The experimental data have been used to determine the values of the experimental constants in the Nusselt number expression by simple linear regression analysis and then the convective heat transfer coefficients have been evaluated. The convective heat transfer coefficients have been observed to decrease with the drying day progression from the 1 st day to the 3 rd day. The average value of convective heat transfer coefficients have been found to decrease from 2.49 to 1.94 W/m 2 °C. The experimental error in terms of percent uncertainty has also been evaluated.


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