scholarly journals Modeling and simulation of heat and mass transfer in an Ethiopian fresh injera drying process

Heliyon ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. e06201
Author(s):  
Alamrew B. Solomon ◽  
Solomon W. Fanta ◽  
Mulugeta A. Delele ◽  
Maarten Vanierschot
Keyword(s):  
Mass Transfer ◽  
Modeling And Simulation ◽  
Heat And Mass Transfer ◽  
Drying Process

Method of Ginkgo biloba Drying and Drying Machine Design

2014 ◽  
Vol 541-542 ◽  
pp. 722-726
Author(s):  
Jun Ming Hou ◽  
De Xu Yang ◽  
Ke Jia Wu
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Convective Heat ◽  
Ginkgo Biloba ◽  
Medical Industry ◽  
Combined Effect ◽  
Machine Design ◽  
Drying Process ◽  
Heat Transmission ◽  
Electrically Conducting

In this paper the drying process of ginkgo biloba is discussed. The process combined effect of convective Heat and mass transfer on hydromagnetic electrically conducting viscous, how to improve the ability of drying is an important problem. The heat transmission for drying process is discussed. The parameter of drying process is determined. The ginkgo biloba drying machine is developed and the key part of drying machine is designed. The whole drying machine is developed, which can enhance the ability of medical industry. The study can help the Optimization of drying process and the level of the ginkgo biloba drying.

scholarly journals Processes of heat and mass transfer during drying of red beetroot

2020 ◽  
Vol 6 (2) ◽  
pp. 81-87
Author(s):  
Zhanna Petrova ◽  
◽  
Kateryna Samoilenko ◽  
Vitaly Vishnevsky
Keyword(s):  
Mass Transfer ◽  
Energy Consumption ◽  
Heat And Mass Transfer ◽  
Raw Materials ◽  
Antioxidant Properties ◽  
Calculation Model ◽  
Experimental Results ◽  
Biologically Active ◽  
Raw Material ◽  
Drying Process

Red beetroot is the main raw material which has a high content of betanine with antioxidant properties. An important emphasis in the processing of antioxidant raw materials by drying is to reduce energy consumption for the dehydration process, the maximum preservation of biologically active substances, and to reduce the cost of the final product. Drying is a complex and energy-intensive process. Therefore, to optimize energy consumption during drying and selection of rational modes of dehydration, it is necessary to apply the calculated analysis of heat and mass transfer on the basis of adequate mathematical models. Calculated and experimental results are compared. In general, the comparison of the results of numerical modeling of convection drying processes of the red beetroot sample with the experimental results showed their rather satisfactory qualitative agreement. The calculation model can be used to approximate the characteristics of the drying process of red beetroot, in particular the time required for drying. The obtained results of calorimetric studies allow stating that with correctly selected compositions, not only the components of native raw materials are stabilized, but also the drying process is intensified with the reduction of energy consumption to process.

Modeling and simulation of heat and mass transfer during drying of solids with hemispherical shell geometry

2011 ◽  
Vol 35 (2) ◽  
pp. 191-199 ◽  
Author(s):  
I.I. Ruiz-López ◽  
H. Ruiz-Espinosa ◽  
M.L. Luna-Guevara ◽  
M.A. García-Alvarado
Keyword(s):  
Mass Transfer ◽  
Modeling And Simulation ◽  
Heat And Mass Transfer ◽  
Hemispherical Shell ◽  
Shell Geometry

Thermodynamic Theory of Convective Drying Process of Porous Media

2002 ◽  
Author(s):  
You-Rong Li ◽  
Dan-Ling Zeng
Keyword(s):  
Mass Transfer ◽  
Heat Source ◽  
Heat And Mass Transfer ◽  
Internal Heat ◽  
Internal Heat Source ◽  
Thermodynamic Theory ◽  
Convective Drying ◽  
Internal Mass ◽  
Drying Process ◽  
Mass Source

Based on non-equilibrium thermodynamic theory and combined with the conservation laws, a comprehensive theoretical model was established to describe heat and mass transfer during convective drying process, and numerical calculation was performed. The results show that: (a) the external convective heat and mass transfer may be treated as the conductive heat transfer with internal heat source and the molecular mass diffusion with internal mass source, respectively, and the ability of heat and mass transfer mainly depends on the strength of the heat source and mass source; the higher the temperature of the drying media, the lower the strength of the internal heat source, but the higher that of the internal mass sources; (b) the evaporation of internal water takes place inside the whole material, and the molecular mass diffusion of the internal vapor is in the direction of decreasing mass transfer potential, not along the decreasing partial pressure of vapor.

scholarly journals 3D simulation on convective drying process for cylindrical tea particle using CFD software to analyze the heat and mass transfer phenomena

2020 ◽  
Author(s):  
Eflita Yohana ◽  
Nazaruddin Sinaga ◽  
Haryo Pachusadewo ◽  
M. Irfan Nugraha ◽  
M. Endy Yulianto ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
3D Simulation ◽  
Convective Drying ◽  
Drying Process

Heat and Mass Transfer during Contact Drying in a Laundry Calender

1973 ◽  
Vol 187 (1) ◽  
pp. 591-599
Author(s):  
J. F. T. MacLaren ◽  
A. A. Nicol ◽  
R. Wallace
Keyword(s):  
Mass Transfer ◽  
Moisture Content ◽  
Heat And Mass Transfer ◽  
Initial Moisture Content ◽  
Temperature Profiles ◽  
Drying Process ◽  
Steam Temperature ◽  
Empirical Expression ◽  
Contact Drying ◽  
Physical Variables

Contact drying of fabric was studied using a two-roll steam-heated laundry calender. The effects on heat and mass transfer of steam temperature, fabric initial moisture content, fabric velocity, contact pressure and steam-side heat transfer coefficient were observed experimentally. Bed and roller surface temperature profiles were measured to assist in interpreting and subsequently analysing the drying process. The experimental results were correlated using dimensionless parameters derived from a dimensional analysis of a drying equation. An empirical expression was obtained that related the final moisture content of the fabric to the initial moisture content and the other pertinent physical variables.

Risk Analysis on Grain Quality in the Drying Process

2013 ◽  
Vol 397-400 ◽  
pp. 1078-1082
Author(s):  
Xin Yin Wu ◽  
Yao Fu ◽  
Yan Xu
Keyword(s):  
Mass Transfer ◽  
Risk Analysis ◽  
Heat And Mass Transfer ◽  
Process Monitoring ◽  
Grain Quality ◽  
Production Loss ◽  
Drying Process ◽  
Agricultural Industry ◽  
Grain Drying ◽  
Quality Process

Drying is one of the important chain of operations in agricultural industry, having important implications for maintaining edible quality and reducing the production loss of grain. International and domestic scholars have done a great deal of research about heat and mass transfer, change of grain quality, process monitoring and equipment during the process of grain drying, but none about the risk analysis of grain quality during the process of drying have been published yet. Therefore, based on the model of change of grain quality that is previously built, the paper intends put forward some suggestions on the production and application of grain drying equipment, adopting the AFSOM method in the procedure of risk analysis of grain drying quality.

scholarly journals Modeling of Coal Drying before Pyrolysis

2013 ◽  
Vol 336 ◽  
pp. 121-128 ◽  
Author(s):  
Damintode Kolani ◽  
Eric Blond ◽  
Alain Gasser ◽  
Tatiana Rozhkova ◽  
Matthieu Landreau
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Coke Oven ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
Drying Process ◽  
Finite Element Software ◽  
Proposed Model ◽  
Coal Drying ◽  
Temperature Plateau

The coking process is composed of two main stages: drying process and pyrolysis of coal. A heat and mass transfer model was developed to simulate the drying process of coal. The mechanisms of heat and mass transfer described in the model are: conduction through the coal cake; conduction and convection through the gas in pores; generation, flux and condensation of water vapor. The model has been implemented in finite element software. It requires basic data on the coke oven charge properties and oven dimensions as input. These input data were obtained by experiments or from the literature. The proposed model includes condensation and evaporation allowing us to reproduce the temperature plateau observed experimentally.

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