Aug 01 2018Although forced convection solar grain dryers achieve greater drying rates than natural convection dryers optimum air velocity grain layer thickness and drying air temperatures are necessary for improved performance Number of trays used also affects performance This study investigated the moisture removal rate (ratio of mass of moisture removed to mass of wet grain per hour) of a solar PhD Students under Faculty of Chemical and Food Engineering 1 Aynadis Molla Title: Solar Maize Grain Drying: Experimental and CFD Modeling Aynadis Molla has recived her BSc degree with Chemical Engineering from Bahir Dai institure of Technology BiT Bahir dar University and MSc degree with Food Engineering from Addis Ababa Institute of Technology Addis Ababa

Performance of solar dryer for Solanum lycopersicum drying

parameters like crop temperature greenhouse temperature outlet air temperature etc Commercial simulation tools such as MATLAB 2013a CFD were used for the numerical study of drying characteristics for the solar dryer [16-17] Solar dryer with thermal storage materials were used for drying of Vitis

Solar dryers have many configurations sizes and shapes and these are very much influenced by the type of crop to be dried and the quantity of the crop to be dried as well as the drying rate The Pepper dryer designed was solely operated with solar energy and used naturalconvection III EXPERIMENTAL RESULT ANALYSIS

The simulation results agreed well with the experimental data for solar drying of the macadamia nuts 1 I NTRODUCTION HE macadamia nut (Macadamia integrifolia) is a commer- cially cultivated food crop that originates from A Mohammed and K Aladeniyi "Analysis of a Solar Dryer Box with Ray Tracing CFD Technique " International

The breakeven analysis for the dryer payback period is shown in Fig 7 by the intersection of two lines The point shows that the payback period of the maize dryer is 970 h The dryer will run free of cost after the payback period Table 5 Shows the economic analysis of solar maize dryer in American dollars ($)

A multi-purpose solar device was constructed to test the concept of a multi-use solar device for drying water heating and space heating Further a thermal model was developed to investigate the thermal performance of the proposed device Experimental tests were carried out to validate the model results Cost analysis was done for comparison

Experimental performance and modeling of a greenhouse

The simulation results agreed well with the experimental data for solar drying of the macadamia nuts 1 I NTRODUCTION HE macadamia nut (Macadamia integrifolia) is a commer- cially cultivated food crop that originates from A Mohammed and K Aladeniyi "Analysis of a Solar Dryer Box with Ray Tracing CFD Technique " International

parameters like crop temperature greenhouse temperature outlet air temperature etc Commercial simulation tools such as MATLAB 2013a CFD were used for the numerical study of drying characteristics for the solar dryer [16-17] Solar dryer with thermal storage materials were used for drying of Vitis

Abundant availability of solar energy and fast depleting fossil fuel reserves have necessitated deployment of large scale solar thermal systems for meeting the space heating process heating and drying requirements Researchers worldwide have focused on developing energy efficient dryer capable of enhancing product quality reduced drying time high throughput minimal pre

Dryer thermal efficiency: Mumba (1995) studied photovoltaic powered forced convection solar dryer for drying maize with an initial moisture content of 33 3% dry basis to 14 3% dry basis and obtained the dryer thermal efficiency of 58 1% (Arinze et al 1999) The thermal efficiency of their system for drying high quality hay of 79% has reported

Our present work focuses on the CFD and experimental analysis of the solar crop dryer attached with flat plate collector and attached with diesel engine exhaust pipe heat exchanger A comparison study was made between the crop dryer with and without exhaust pipe heat exchanger and found that when the exhaust pipe was attached there was an

Considering the importance of cassava as a staple crop in developing countries optimizing the drying process for it while minimizing energy inputs and costs is of primary importance Therefore the community of Chisemphere Malawi decided to look into alternative designs to its current solar dryer to

KEYWORDS: Solar Crop Dryer Exhaust Gas Heat Exchangers Flat Plate Collector Fins CFD Analysis Received : Aug 28 2018 Accepted : Sep 18 2018 Published : Nov 02 2018 Paper Id : IJMPERDDEC201838 1 INTRODUCTION The major objective in drying agricultural products is the reduction of the moisture content to a level

CFD and experimental analysis of solar crop dryer with waste heat recovery system of exhaust gas from diesel engine R Meenakshi Reddy 1 E Siva Reddy 1 C Uma Maheswari 2 and K Krishna Reddy 3 Published under licence by IOP Publishing Ltd

Design and Development of Solar Crop Dryer Integrated

Solar energy Solar dryers Crop drying Heat storage material A B S T R A C T This work presents the design and development of solar crop dryer with drained SAE 20/40 from vehicles oil as heat storage material The details design fabrication and experimental analysis procedure of the developed dryer are explained

May 25 2018Numerical simulation method has been employed to improve the thermal performance of cabinet direct solar dryer The present study focused on the numerical simulation of a direct solar dryer with integration of a flat layer of fractured porous medium above the absorber plate in the aim to store thermal energy by sensible heat

conventional indirect solar dryer C O C Oko et al [4] presented the analysis of a coupled heat and mass transfer process in a fixed-bed solar grain dryer and Humidity of air moisture concentration temperature were measured in a solar grain dryer in Nigeria at the latitude of 4 858N and longitude of 8 372E

The aim of this study was to use a three-dimensional Computational Fluid Dynamics (CFD) model of a convective drying chamber of a heat pump dryer for the analysis of the behavior of the air flow in the chamber geometry and its effect on the temperature distribution during the convective drying process 2 Methodology 2 1 CFD Modelling

Sep 27 2013Annual operation and maintenance cost of solar dryer as a fraction of its capital cost N Total no of observations n Number of constants NE c Net annual potential of CO 2 emissions mitigation (kg) p c Cost of the solar dryer per unit aperture area (Rs/m 2) Q dry Potential amount of a cash crop for solar drying (kg) Q gross Gross annual

solar tunnel drying process is a better alternate for open sun drying and also ensures the quality of product evidently performance analysis of solar drying of red chilli in Bhutan Keywords: by modeling an existing solar crop dryer at KhaoSolar Tunnel Dryer moisture content thermal efficiency drying time Introduction

The thermal and electrical efficiency of a custom-designed PV/T panel cooled by forced air circulation was investigated by experimental and computational fluid dynamics (CFD) analysis Experiments were carried out with four different array configurations under constant irradiation of 1100 W/m 2 and 3 different air velocities (3 3#x2009 m/s 3 9#x2009 m/s and

Aug 01 2011Arinze et al (1996) report the design features and the experimental functional performance of a new mobile solar grain dryer suitable for commercial use Mumba (1995) reports on a solar dryer which incorporates a directly coupled PV powered d c fan The dryer of 90 kg capacity was designed for regions without electrical grid

A solar dryer was studied with photovoltaic solar cells incorporated in the solar air heater section to drive a DC fan The dryer dried 90 kg maize grain per batch from an initial moisture content of 33 3 to 20 percent (dry basis) in just one day In comparison to sun drying solar grain drying with a PV-driven DC fan reduces the drying time