Solar drying of guavas, papayas and apples

This paper includes the results of a study carried out to determine the drying characteristics of three agricultural fruit products. The products used in this analysis were apples, guavas and papayas. The drying characteristics of the three products were investigated under different operating cond...

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Main Authors: Hawlader, Mohammad Nurul Alam, Lee, Hwee Peng
Format: Book Chapter
Language:English
Published: IIUM Press 2011
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Online Access:http://irep.iium.edu.my/20053/1/solar_drying_of_guavas_-_C6.pdf
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spelling my.iium.irep.200532012-05-31T06:37:20Z http://irep.iium.edu.my/20053/ Solar drying of guavas, papayas and apples Hawlader, Mohammad Nurul Alam Lee, Hwee Peng TP368 Food processing and manufacture This paper includes the results of a study carried out to determine the drying characteristics of three agricultural fruit products. The products used in this analysis were apples, guavas and papayas. The drying characteristics of the three products were investigated under different operating conditions by varying now velocities and the thickness of the specimens. An experimental solar dryer was built to conduct tests on different samples. Tests were carried under both natural and forced convection conditions. Different meteorological conditions were considered in the experiments. A analytical model. based on Fick's second law of diffusion. was used to determine the effective diffusion coefficients of the three products. The diffusion coefficients were obtained from the slope of in (w/wo) against t/L2. It was found that the diffusivities of apples, guavas and papayas range between 5.74xI0-12 and 8.6IxI0-IO 1112/s. It was also observed that shrinkage occurred in the above three specimens during drying. This effect was taken into account and a correction factor for thickness, L, was introduced. IIUM Press 2011 Book Chapter REM application/pdf en http://irep.iium.edu.my/20053/1/solar_drying_of_guavas_-_C6.pdf Hawlader, Mohammad Nurul Alam and Lee, Hwee Peng (2011) Solar drying of guavas, papayas and apples. In: Alternative energy. IIUM Press, Kuala Lumpur, pp. 38-46. ISBN 9789674181581 http://rms.research.iium.edu.my/bookstore/Default.aspx
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic TP368 Food processing and manufacture
spellingShingle TP368 Food processing and manufacture
Hawlader, Mohammad Nurul Alam
Lee, Hwee Peng
Solar drying of guavas, papayas and apples
description This paper includes the results of a study carried out to determine the drying characteristics of three agricultural fruit products. The products used in this analysis were apples, guavas and papayas. The drying characteristics of the three products were investigated under different operating conditions by varying now velocities and the thickness of the specimens. An experimental solar dryer was built to conduct tests on different samples. Tests were carried under both natural and forced convection conditions. Different meteorological conditions were considered in the experiments. A analytical model. based on Fick's second law of diffusion. was used to determine the effective diffusion coefficients of the three products. The diffusion coefficients were obtained from the slope of in (w/wo) against t/L2. It was found that the diffusivities of apples, guavas and papayas range between 5.74xI0-12 and 8.6IxI0-IO 1112/s. It was also observed that shrinkage occurred in the above three specimens during drying. This effect was taken into account and a correction factor for thickness, L, was introduced.
format Book Chapter
author Hawlader, Mohammad Nurul Alam
Lee, Hwee Peng
author_facet Hawlader, Mohammad Nurul Alam
Lee, Hwee Peng
author_sort Hawlader, Mohammad Nurul Alam
title Solar drying of guavas, papayas and apples
title_short Solar drying of guavas, papayas and apples
title_full Solar drying of guavas, papayas and apples
title_fullStr Solar drying of guavas, papayas and apples
title_full_unstemmed Solar drying of guavas, papayas and apples
title_sort solar drying of guavas, papayas and apples
publisher IIUM Press
publishDate 2011
url http://irep.iium.edu.my/20053/1/solar_drying_of_guavas_-_C6.pdf
http://irep.iium.edu.my/20053/
http://rms.research.iium.edu.my/bookstore/Default.aspx
_version_ 1643607816818130944
score 13.154949