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Determination of pistachio drying behaviour and conditions in a solar drying system

Journal Article:

Abstract

The main object of this study is to determine the drying behaviour and conditions of shelled and unshelled pistachio samples using both solar assisted and open sun drying. For each drying experiment, 100 g each of unshelled and shelled pistachio were used. The least-squares method was applied to find the drying curve equation of pistachio. During the experiments, shelf temperatures, weight loss of pistachio, moisture content of air, and distribution of solar radiation were measured; and presented depending on the drying time. Also, the mass shrinkage ratios of shelled and unshelled pistachio samples were determined, and the experimental uncertainty ratio was calculated as 15-16.5 per cent based on the experimental results. It was deduced that the shelled and unshelled pistachio samples in the solar assisted forced convection dryer were perfectly dried at temperatures of 50{+-}10degC in the time period of 6 h. Whereas, the samples in the open sun drying were not sufficiently dried at temperatures of 28{+-}4degC in the same time period. Hence, it is suggested that the pistachio samples with approximately 29.0 per cent of moisture are dried in the solar assisted convection dryer at 50{+-}10degC of temperature in the time period of approximately 6 h in order  More>>
Authors:
Midilli, Adnan [1] 
  1. Karadeniz Technical Univ., Mechanical Engineering Dept., Trabzon (Turkey)
Publication Date:
Jul 01, 2001
Product Type:
Journal Article
Reference Number:
EDB-01:077646
Resource Relation:
Journal Name: International Journal of Energy Research; Journal Volume: 25; Journal Issue: 8; Other Information: PBD: 2001
Subject:
14 SOLAR ENERGY; SOLAR DRYING; NUTS; MOISTURE; WEIGHT; SOLAR RADIATION
OSTI ID:
20187444
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0363-907X; IJERDN; TRN: GB0012079
Submitting Site:
GB
Size:
page(s) 715-725
Announcement Date:

Journal Article:

Citation Formats

Midilli, Adnan. Determination of pistachio drying behaviour and conditions in a solar drying system. United Kingdom: N. p., 2001. Web. doi:10.1002/er.715.
Midilli, Adnan. Determination of pistachio drying behaviour and conditions in a solar drying system. United Kingdom. doi:10.1002/er.715.
Midilli, Adnan. 2001. "Determination of pistachio drying behaviour and conditions in a solar drying system." United Kingdom. doi:10.1002/er.715. https://www.osti.gov/servlets/purl/10.1002/er.715.
@misc{etde_20187444,
title = {Determination of pistachio drying behaviour and conditions in a solar drying system}
author = {Midilli, Adnan}
abstractNote = {The main object of this study is to determine the drying behaviour and conditions of shelled and unshelled pistachio samples using both solar assisted and open sun drying. For each drying experiment, 100 g each of unshelled and shelled pistachio were used. The least-squares method was applied to find the drying curve equation of pistachio. During the experiments, shelf temperatures, weight loss of pistachio, moisture content of air, and distribution of solar radiation were measured; and presented depending on the drying time. Also, the mass shrinkage ratios of shelled and unshelled pistachio samples were determined, and the experimental uncertainty ratio was calculated as 15-16.5 per cent based on the experimental results. It was deduced that the shelled and unshelled pistachio samples in the solar assisted forced convection dryer were perfectly dried at temperatures of 50{+-}10degC in the time period of 6 h. Whereas, the samples in the open sun drying were not sufficiently dried at temperatures of 28{+-}4degC in the same time period. Hence, it is suggested that the pistachio samples with approximately 29.0 per cent of moisture are dried in the solar assisted convection dryer at 50{+-}10degC of temperature in the time period of approximately 6 h in order to protect from the negative climatic and environmental effects. However, it is not desirable to dry the pistachio samples in the open sun because of greater drying time, dirt, dust and harmful insects. (Author)}
doi = {10.1002/er.715}
journal = {International Journal of Energy Research}
issue = {8}
volume = {25}
journal type = {AC}
place = {United Kingdom}
year = {2001}
month = {Jul}
}