A generalized correlation for the estimation of moisture removal in fruits and grains during hot air drying

被引：0

作者：

Konijeti R.K. ^{[1
]}

Sarma P.K. ^{[2
]}

Puppala N. ^{[3
]}

Sharma K.V. ^{[4
]}

Prasad L.S.V. ^{[5
]}

机构：

[1] KL University, Vaddeswaram, Guntur Dist, Andhra Pradesh

[2] GITAM University, Beach Road, Gandhi Nagar, Rushikonda, Visakhapatnam, Andhra Pradesh

[3] College of Agricultural, Consumer and Environmental Sciences, Agricultural Science Center Clovis 2346, State Road 288, Clovis, 88101-9998, NM

[4] Centre for Energy Studies, JNTUH, Kukatpally, Hyderabad, Telangana

[5] Andhra University, Waltair Junction, Visakhapatnam, Andhra Pradesh

来源：

International Journal of Heat and Technology | 2017年 / 35卷 / 02期

关键词：

Biot Number; Fourier Number; Mass Transfer; Moisture; Unsteady State;

D O I：

10.18280/ijht.350228

中图分类号：

学科分类号：

摘要：

Drying of food and grain material for removal of moisture is an important aspect in preserving them or for extraction of oil. It is a complex process involving both heat and mass transfer. The present work is aimed at developing a simple mathematical model with governing differential equations and proper boundary conditions for spherical shaped food material to determine the rate of moisture removal. The differential equations are solved using numerical technique with the help of a computer Program and the results are presented in graphical form. The variation of temperature within the seed with respect to time for various drying medium temperatures considering the partial pressure of water vapor in the drying medium are presented. The rate of moisture removal with respect to time for different convective environment conditions and varying resistance within the seed is also presented. A generalized correlation to determine the moisture rate removal as a function of Fourier number, Biot number and Mass transfer Parameter is developed for estimation of time required for heating under different hot air conditions for various spherical shaped fruits or grains. This non-dimensional correlation is helpful in quick estimation of time for drying of any seed and hence would be useful in the Agro Industry.

引用

页码：426 / 432

页数：6

共 16 条

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