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Advisor(s)
Abstract(s)
The removal of moisture by drying, prevents the growth and reproduction of these microorganisms, which cause rotting, and minimizes many of the reactions of deterioration from moisture, revealing itself a crucial preservation method. Portugal is a country with great potential for exploitation of solar energy, the implementation of a drying system based on this renewable source, facing devices with high energy consumption and hence more expensive, is attractive. With this, the present work emerges, in order to, by building a sustainable drying model, evaluate their performance, so that can be a good solution.
First, were done characterization tests with the dryer unload, studying the temperatures and the relative humidity (RH) inside the drying chamber. The influence of various air gap heights and of operation modes, under natural and forced convection were studied. The developed unit was subsequently used in cherry drying. The first drying test, allowed dry 15 kg cherry in 124 hours. The second with 25 kg was carried out under adverse conditions, therefore presented an additional drying time of 25 hours from the first. The results of the studies realized indicate great potential of the drying mechanism proposed, capable of reaching temperatures of 55 °C inside the drying chamber, for an ambient temperature and humidity of 31,7 ºC and 28%, respectively, and an intensity of solar radiation of 918 W/m2.
Description
Keywords
Solar drying Indirect solar dryer Cherry drying
Citation
Parente, D., Pires, L., Silva, P.D., Nunes, J. (2017). Development of an experimental unit for studying the solar drying. ICEUBI2017 - International Congress on Engineering 2017, University of Beira Interior, Covilhã, Portugal, December 5-7, 2017. (ISSN: 2183-9891)
Publisher
ICEUBI2017 - International Congress on Engineering 2017