Table of Contents
Conference Papers in Energy
Volume 2013, Article ID 125628, 4 pages
Conference Paper

An Experimental Study and Analysis on Solar Drying of Bitter Gourd Using an Evacuated Tube Air Collector in Thanjavur, Tamil Nadu, India

1Department of Physics, A. VVM Sri Pushpam College, Thanjavur 613 503, India
2School of Electrical and Electronics Engineering, SASTRA University, Thanjavur 613 402, India
3Department of Architecture, Periyar Maniammai University, Thanjavur 613 403, India

Received 3 January 2013; Accepted 3 April 2013

Academic Editors: P. Agarwal, B. Bhattacharya, U. P. Singh, and B. Sopori

This Conference Paper is based on a presentation given by AR. Umayal Sundari at “International Conference on Solar Energy Photovoltaics” held from 19 December 2012 to 21 December 2012 in Bhubaneswar, India.

Copyright © 2013 AR. Umayal Sundari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The objective of this research work is to design and develop a forced convection solar dryer using evacuated tube air collector and study its performance on bitter gourd in Thanjavur District, Tamilnadu, India. The designed solar dryer consists of a drying chamber, evacuated tube air collector, a blower, and a chimney. Drying parameters, moisture ratio and drying rates, are calculated and their performance is compared with natural sun drying. The results of the present study show that the proposed solar dryer has greater efficiency, and the moisture content of bitter gourd is reduced from 91% to 6.25% in 6 hours as compared to 10 hours in natural sun drying. In this solar dryer, the products are uniformly dried, and the moisture content of the sample is controlled. It is found that the quality of the dried bitter gourd using solar dryer is higher than the natural sun-dried bitter gourd.