Estimation of convective heat transfer coefficient in agricultural products under solar drying conditions

This research estimated convective heat transfer coefficients of agricultural products (banana, taro and chili) under solar (open sun) drying conditions using the N u = h c ( X / K v ) = C ( R a) n equation. Values of constants C and n were obtained by linear regression analysis. Results showed that...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-03, Vol.1835 (1), p.12111
Main Authors: Saniso, Eleeyah, Sukeaw, Adulsman, Seni, Lutfee, Wamae, Warisa, Hayibaka, Muhammadkhoiri, Rojanasuwan, Sunit
Format: Article
Language:English
Subjects:
Convective heat transfer
Drying
Heat transfer
Heat transfer coefficients
Physics
Regression analysis
Temperature
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Summary:This research estimated convective heat transfer coefficients of agricultural products (banana, taro and chili) under solar (open sun) drying conditions using the N u = h c ( X / K v ) = C ( R a) n equation. Values of constants C and n were obtained by linear regression analysis. Results showed that natural convective heat transfer coefficients of agricultural products were in the range 0.720-3.559 W/m 2 · o C. The C value of agricultural products was 1.0000-1.0011, while n was in the range 0.071-0.274, P r = 0.697-0.705 and 2.931×10 5 -1.803×10 8 < G r < 6.139×10 8 -2.230×10 9 .
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1835/1/012111