@article{ajfst2019764,
author={{Ekop, Inemesit Edem and Simonyan, Kayode Joshua and Onwuka, Udochukwu Nelson},
title={Comparative Analysis of Thermal Properties of Two Varieties of Periwinkle Relevant to Its Processing Equipment Design},
journal={American Journal of Food Science and Technology},
volume={7},
number={6},
pages={189--194},
year={2019},
url={http://pubs.sciepub.com/ajfst/7/6/4},
issn={2333-4835},
abstract={This study was conducted to investigate and compare the thermal properties of two varieties: *Tympanotonus fuscatus* and *Pachymelania aurita* of Periwinkle in Nigeria. The thermal properties, namely; specific heat capacity,*C*_{p}_{,} thermal conductivity, k, thermal diffusity,α, thermal absorptivity, γ and thermal effusivity, ∈ of Periwinkle samples were determined. The mean thermal conductivity of *T. fuscatus* was found to be 0.085¡À0.00015 W/m.K at temperatures of 308 ¨C 373 K, while that of *P. aurita* was 0.0952¡À0.00056 W/m.K at the same temperature range.The average specific heat capacity value of *T. fuscatus *was found to be 2403.663¡À3.4379 J/kg.K at temperature of 308 ¨C 373 K lower than that of* P. aurita *having a mean value of 2832.314¡À1.7385 J/kg.K at the same temperature. The mean thermal diffisivity of *T. fuscatus *was found to be 2.6553¡Á10^{-8 }m^{2}/s while that of *P. aurita *was found to be 5.6790¡Á10^{-8} m^{2}/s. The average values for thermal absorptivity and effusivity of *T. fuscatus* and *P. aurita *were obtained as 81.085m^{-1}; 525.084 W.s^{1/2}/m^{2}K and 55.441 m^{-1}; 396.952 W.s^{1/2}/m^{2}K, respectively. The results shown that average thermal absorptivity and effusivity values were higher in *T. fuscatus *than *P. aurita. *A Tukey pairwise comparison analysis carried out on the mean values of these thermal properties of *T. fuscatus* and *P. aurita* revealed that there is statistically significant difference at α<5% between the thermal properties of the two varieties of periwinkle samples. These data would help us in predicting and controlling the heat flux during the design of periwinkle processing equipment.},
doi={10.12691/ajfst-7-6-4}
publisher={Science and Education Publishing}
}