Drying characteristics of lemons and dates under indirect type forced convection solar drying and natural open sun drying

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

An indirect type forced convection solar dryer unit was designed and built at the College of Engineering, Sultan Qaboos University (SQU) in Muscat (Oman). The unit consists of a solar air heater (i.e., solar collector with corrugations) and a cabinet acting as a drying chamber (i.e., basically a batch dryer). It was manufactured with locally available materials and can be used for drying various agricultural products like fruits and vegetables. In this study, the solar dryer was tested under controlled conditions for drying lemons and dates as the test samples. The dryer unit was investigated experimentally and its performance was evaluated under the climatic conditions of Oman (21° 00 N, 57° 00 E). For comparison purposes, natural traditional sun drying experiments (i.e., solar dryer under open sun with natural convection) was also conducted at the same time. For this effect, the results of drying under the open sun and indirect type forced convection solar drying was drawn under identical weather conditions during summer conditions in June, 2009. The performance of the solar dryers was computed and expressed in terms of the moisture evaporation (crop mass during drying). It was found that the quality of lemons and dates after drying was better and drying time was less in the indirect type forced convection solar dryer in comparison to open sun drying. It is hoped that this study may be useful for further development work.

Original languageEnglish
Title of host publicationDye-Sensitized Solar Cells and Solar Cell Performance
PublisherNova Science Publishers, Inc.
Pages137-154
Number of pages18
ISBN (Print)9781612096339
Publication statusPublished - 2011

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Keywords

  • Dates
  • Drying
  • Forced convection solar dryer
  • Lemons
  • Oman
  • Open sun drying

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Abdul-Wahab, S. A. (2011). Drying characteristics of lemons and dates under indirect type forced convection solar drying and natural open sun drying. In Dye-Sensitized Solar Cells and Solar Cell Performance (pp. 137-154). Nova Science Publishers, Inc..