THERMAL SCIENCE

International Scientific Journal

Selvaraj Vijayan

,

Arjunan Thottipalayam Vellingiri

,

Anil Kumar

THIN LAYER DRYING CHARACTERISTICS OF CURRY LEAVES (MURRAYA KOENIGII) IN AN INDIRECT SOLAR DRYER

ABSTRACT
In this work, the thin layer drying characteristics of curry leaves (Murraya koenigii) has been studied in an indirect forced convection solar dryer with con-stant air mass flow rate of 0.0636 kg/s. Twelve thin layer drying models were tested for its suitability to describe the drying characteristics of curry leaves. The dryer has reduced the initial moisture content of curry leaves from 67.3% (wet basis) to the final moisture content of 4.75% (wet basis) in 3.5 hours. The pickup efficiency of indirect solar dryer for drying curry leaves was varied between 4.9% and 23.02%. Based on the statistical parameters, the Modified Henderson and Pabis model and Wang and Singh model were selected for predicting the drying characteristics of curry leaves. The payback period for the solar dryer was evaluated as 8 months, which is found to be much lower when compared with the entire life span of 15 years. The payback evaluation confirms that the solar dryer is economically viable in rural applications.
KEYWORDS
thin-layer drying, curry leaves, indirect solar dryer, drying models, simple payback period
PAPER SUBMITTED: 2017-03-20
PAPER REVISED: 2017-05-29
PAPER ACCEPTED: 2017-06-13
PUBLISHED ONLINE: 2017-12-16
DOI REFERENCE: https://doi.org/10.2298/TSCI17S2359V
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Supplement 2, PAGES [S359 - S367]
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THIN LAYER DRYING CHARACTERISTICS OF CURRY LEAVES (MURRAYA KOENIGII) IN AN INDIRECT SOLAR DRYER

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence