Open AccessEstimation of convective heat transfer coefficient in agricultural products under solar drying conditions
Author(s) -
Eleeyah Saniso,
Adulsman Sukeaw,
Lutfee Seni,
Warisa Wamae,
Muhammadkhoiri Hayibaka,
Sunit Rojanasuwan
Publication year - 2021
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 - 10.1088/1742-6596/1835/1/012111
Subject(s) - heat transfer coefficient , convection , convective heat transfer , range (aeronautics) , thermodynamics , agriculture , heat transfer , materials science , analytical chemistry (journal) , chemistry , physics , chromatography , geography , composite material , archaeology
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 .