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Comparative Analysis of Cabinet Type Solar Dryer with Different Collector Geometries

Publication Date : 31/08/2015



Author(s) :

Sudhir U. Patil , V. H. Patil.


Volume/Issue :
Volume 2
,
Issue 8
(08 - 2015)



Abstract :

In present work flat plate, v-groove and fin type collectors were constructed. Each collector was integrated with separate cabinet dryer. Experimental tests were carried out on tomato slices, green chilli and potato slices in natural convection mode. The aperture area of all types of collectors, cabinet sizes, numbers of trays (4 no.) in each cabinet and mass flow rate of air through collector were kept same. All tests were carried out in metrological conditions of Chandwad having latitude (20.31oN), longitude (74.4oE) and elevation (580M). Tomatoes were dried down from approximately 93% (w.b.) to 10% (w.b.) moisture contain in 12 hours 9 minutes, 10 hours 45 minutes and 10 hours in dryers integrated with flat plate, V-shape and fin type collector respectively in natural convection mode. The moisture content of chilli from an initial value of 78% (w.b) to a final value 9% (w.b.) reduced by natural convection mode in 24 hours, 23 hours, 23 hours in dryers integrated with flat plate, V-shape and fin type collector respectively. The moisture content of potato slices reduced from an initial value of 80% (w.b.) to a final value 10% (w.b.) by natural convection mode in 5 hours 15 minutes in dryer integrated with flat plate collector; while both dryers integrated with fin type collector and V-shape collector took 5 hours respectively. The fin type collector has highest average collector efficiency, drying rates and collector outlet temperature among all tested collector types in both natural and force convection mode.


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Comparative Analysis of Cabinet Type Solar Dryer with Different Collector Geometries

August 30, 2015