International Research Journal of Innovations in Engineering and Technology - IRJIET International Open Access, Monthly, Peer Reviewed, Reputed Journal ISSN (online): 2581-3048

Impact Factor (2025): 6.9

DOI Prefix: 10.47001/IRJIET

Development and Evaluation of Hybrid Grape Solar Dryer

Abstract

The main objective of the present work was to develop and evaluate a medium scale green-house type solar dryer with capacity of 500 kg fresh grapes (Thompson seedless variety). The dryer was developed, manufactured, and tested under different operational conditions. The actual field tests for the studied dryer could give real results for the performance of the dryer. The quality evaluation tests showed the advantages of the tested dryer in giving high quality raisin based on the Egyptian Standard of dried grapes (Raisins) No., 285/2005 and the International standard ISO 21527 (2008). The results show that, drying grapes with the developed solar dryer gives high quality product competitive with the imported raisin with high safety in terms of microbial infection. The results also showed that the developed solar dryer could reduce the moisture content of grapes from 77.56 to 15.72% (w.b) within 19 hours. In general, the approach leads to improving the traditional sun drying methods of grape and also overcome the problem of higher energy consumption and capital intensive of the large scale industrial grape dryers.

Country : Egypt

1 Dr.Ahmed M. Matouk2 Dr.Mohammed M. El-Khouly3 Dr.Ahmed Tharwat4 Dr.Samy E. El-Far

  1. Prof. of food process Engineering, Faculty of Agriculture, Dep. of Agric. Eng., Mansoura University, Egypt
  2. Prof. of food process Engineering and Director of Agricultural Engineering Research Institute, Egypt
  3. Lecturer of Food Process Engineering, Faculty of Agriculture, Dep. of Agric. Eng., Mansoura University, Egypt
  4. Lecturer of Food Process Engineering, Faculty of Agriculture, Dep. of Agric. Eng., Mansoura University, Egypt

IRJIET, Volume 3, Issue 5, May 2019 pp. 9-15

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