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Crop drying by indirect active hybrid solar – Electrical dryer in the eastern Algerian Septentrional Sahara

In the present work, a new specific prototype of an indirect active hybrid solar–electrical dryer for agricultural products was constructed and investigated at LENREZA Laboratory, University of Ouargla (Algerian Sahara). In the new configuration of air drying passage; the study was done in a somewha... Full description

Journal Title: Solar energy 2009, Vol.83 (12), p.2223-2232
Main Author: Boughali, S
Other Authors: Benmoussa, H , Bouchekima, B , Mennouche, D , Bouguettaia, H , Bechki, D
Format: Electronic Article Electronic Article
Language: English
Subjects:
AIR
Quelle: Alma/SFX Local Collection
Publisher: Kidlington: Elsevier Ltd
ID: ISSN: 0038-092X
Zum Text:
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recordid: cdi_osti_scitechconnect_21236034
title: Crop drying by indirect active hybrid solar – Electrical dryer in the eastern Algerian Septentrional Sahara
format: Article
creator:
  • Boughali, S
  • Benmoussa, H
  • Bouchekima, B
  • Mennouche, D
  • Bouguettaia, H
  • Bechki, D
subjects:
  • AIR
  • Air conditioning. Ventilation
  • Air masses
  • ALGERIA
  • Applied sciences
  • Collectors
  • COMPARATIVE EVALUATIONS
  • CONFIGURATION
  • CROPS
  • DESERTS
  • DIAGRAMS
  • Driers
  • DRYING
  • Drying kinetics
  • ECONOMICS
  • EFFICIENCY
  • ELECTRIC POWER
  • Energy
  • Energy. Thermal use of fuels
  • Exact sciences and technology
  • FLOW RATE
  • Heating, air conditioning and ventilation
  • KINETICS
  • MASS
  • Mathematical drying models
  • MATHEMATICAL MODELS
  • Moisture content
  • Moisture ratio
  • Natural energy
  • PAYBACK PERIOD
  • Slice tomato
  • Solar collectors
  • Solar dryer
  • SOLAR DRYERS
  • SOLAR ENERGY
  • Solar thermal conversion
  • THIN FILMS
  • TOMATOES
  • VELOCITY
  • Ventilation
ispartof: Solar energy, 2009, Vol.83 (12), p.2223-2232
description: In the present work, a new specific prototype of an indirect active hybrid solar–electrical dryer for agricultural products was constructed and investigated at LENREZA Laboratory, University of Ouargla (Algerian Sahara). In the new configuration of air drying passage; the study was done in a somewhat high range of mass flow rate between 0.04 and 0.08 kg/m 2 s a range not properly investigated by most researchers. Experimental tests with and without load were performed in winter season in order to study the thermal behavior of the dryer and the effect of high air masse flow on the collector and system drying efficiency. The fraction of electrical and solar energy contribution versus air mass flow rate was investigated. Slice tomato was studied with different temperatures and velocities of drying air in order to study the influence of these parameters on the removal moisture content from the product and on the kinetics drying and also to determine their suitable values. Many different thin layer mathematical drying models were compared according to their coefficient of determination ( R 2) and reduced chi square ( χ 2) to estimate experimental drying curves. The Middli model in this condition proved to be the best for predicting drying behavior of tomato slice with ( R 2 = 0.9995, χ 2 = 0.0001). Finally an economic evaluation was calculated using the criterion of payback period which is found very small 1.27 years compared to the life of the dryer 15 years.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0038-092X
fulltext: fulltext
issn:
  • 0038-092X
  • 1471-1257
url: Link


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titleCrop drying by indirect active hybrid solar – Electrical dryer in the eastern Algerian Septentrional Sahara
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descriptionIn the present work, a new specific prototype of an indirect active hybrid solar–electrical dryer for agricultural products was constructed and investigated at LENREZA Laboratory, University of Ouargla (Algerian Sahara). In the new configuration of air drying passage; the study was done in a somewhat high range of mass flow rate between 0.04 and 0.08 kg/m 2 s a range not properly investigated by most researchers. Experimental tests with and without load were performed in winter season in order to study the thermal behavior of the dryer and the effect of high air masse flow on the collector and system drying efficiency. The fraction of electrical and solar energy contribution versus air mass flow rate was investigated. Slice tomato was studied with different temperatures and velocities of drying air in order to study the influence of these parameters on the removal moisture content from the product and on the kinetics drying and also to determine their suitable values. Many different thin layer mathematical drying models were compared according to their coefficient of determination ( R 2) and reduced chi square ( χ 2) to estimate experimental drying curves. The Middli model in this condition proved to be the best for predicting drying behavior of tomato slice with ( R 2 = 0.9995, χ 2 = 0.0001). Finally an economic evaluation was calculated using the criterion of payback period which is found very small 1.27 years compared to the life of the dryer 15 years.
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subjectAIR ; Air conditioning. Ventilation ; Air masses ; ALGERIA ; Applied sciences ; Collectors ; COMPARATIVE EVALUATIONS ; CONFIGURATION ; CROPS ; DESERTS ; DIAGRAMS ; Driers ; DRYING ; Drying kinetics ; ECONOMICS ; EFFICIENCY ; ELECTRIC POWER ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; FLOW RATE ; Heating, air conditioning and ventilation ; KINETICS ; MASS ; Mathematical drying models ; MATHEMATICAL MODELS ; Moisture content ; Moisture ratio ; Natural energy ; PAYBACK PERIOD ; Slice tomato ; Solar collectors ; Solar dryer ; SOLAR DRYERS ; SOLAR ENERGY ; Solar thermal conversion ; THIN FILMS ; TOMATOES ; VELOCITY ; Ventilation
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descriptionIn the present work, a new specific prototype of an indirect active hybrid solar–electrical dryer for agricultural products was constructed and investigated at LENREZA Laboratory, University of Ouargla (Algerian Sahara). In the new configuration of air drying passage; the study was done in a somewhat high range of mass flow rate between 0.04 and 0.08 kg/m 2 s a range not properly investigated by most researchers. Experimental tests with and without load were performed in winter season in order to study the thermal behavior of the dryer and the effect of high air masse flow on the collector and system drying efficiency. The fraction of electrical and solar energy contribution versus air mass flow rate was investigated. Slice tomato was studied with different temperatures and velocities of drying air in order to study the influence of these parameters on the removal moisture content from the product and on the kinetics drying and also to determine their suitable values. Many different thin layer mathematical drying models were compared according to their coefficient of determination ( R 2) and reduced chi square ( χ 2) to estimate experimental drying curves. The Middli model in this condition proved to be the best for predicting drying behavior of tomato slice with ( R 2 = 0.9995, χ 2 = 0.0001). Finally an economic evaluation was calculated using the criterion of payback period which is found very small 1.27 years compared to the life of the dryer 15 years.
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6COMPARATIVE EVALUATIONS
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10DIAGRAMS
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16ELECTRIC POWER
17Energy
18Energy. Thermal use of fuels
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20FLOW RATE
21Heating, air conditioning and ventilation
22KINETICS
23MASS
24Mathematical drying models
25MATHEMATICAL MODELS
26Moisture content
27Moisture ratio
28Natural energy
29PAYBACK PERIOD
30Slice tomato
31Solar collectors
32Solar dryer
33SOLAR DRYERS
34SOLAR ENERGY
35Solar thermal conversion
36THIN FILMS
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38VELOCITY
39Ventilation
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titleCrop drying by indirect active hybrid solar – Electrical dryer in the eastern Algerian Septentrional Sahara
authorBoughali, S ; Benmoussa, H ; Bouchekima, B ; Mennouche, D ; Bouguettaia, H ; Bechki, D
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10DIAGRAMS
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abstractIn the present work, a new specific prototype of an indirect active hybrid solar–electrical dryer for agricultural products was constructed and investigated at LENREZA Laboratory, University of Ouargla (Algerian Sahara). In the new configuration of air drying passage; the study was done in a somewhat high range of mass flow rate between 0.04 and 0.08 kg/m 2 s a range not properly investigated by most researchers. Experimental tests with and without load were performed in winter season in order to study the thermal behavior of the dryer and the effect of high air masse flow on the collector and system drying efficiency. The fraction of electrical and solar energy contribution versus air mass flow rate was investigated. Slice tomato was studied with different temperatures and velocities of drying air in order to study the influence of these parameters on the removal moisture content from the product and on the kinetics drying and also to determine their suitable values. Many different thin layer mathematical drying models were compared according to their coefficient of determination ( R 2) and reduced chi square ( χ 2) to estimate experimental drying curves. The Middli model in this condition proved to be the best for predicting drying behavior of tomato slice with ( R 2 = 0.9995, χ 2 = 0.0001). Finally an economic evaluation was calculated using the criterion of payback period which is found very small 1.27 years compared to the life of the dryer 15 years.
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