THERMAL SCIENCE
International Scientific Journal
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
PAPER SUBMITTED: 2017-03-20
PAPER REVISED: 2017-05-29
PAPER ACCEPTED: 2017-06-13
PUBLISHED ONLINE: 2017-12-16
THERMAL SCIENCE YEAR
2017, VOLUME
21, ISSUE
Supplement 2, PAGES [S359 - S367]
- Shivanna, V. B., Subban, N., Effect of Various Drying Methods on Flavor Characteristics and Physico-chemical Properties of Dried Curry Leaves (Murraya koenigii L. Spreng), Drying Technology, 32 (2014) 8, pp. 882-890
- ***, The Wealth of India. A Dictionary of Indian Raw Materials and Industrial Products, Vol. 2; Council of Scientific and Industrial Research, New Delhi, 1962
- Salikutty, J., et al., Curry Leaf, in: Handbook of Herbs and Spices (ed. K. V. Peter), Woodhead Publish-ing Limited, 2012, pp. 260-274
- Chakraborty, D. P., et al., On the Constitution of Murrayanine, a Carbazole Derivative Isolated from Murraya Koenigii Spreng, Tetrahedron, 21 (1965), 2, pp. 681-685
- Kong, Y. C., et al., Sources of the Anti-Implanation Alkaloid Yuehchukene in the Genus Murraya, J. Ethnopharmacol. 15 (1986), 2, pp. 195-200
- Sakhale, B. K., et al., Studies on Dehydration of Curry Leaves, ADIT Journal of Engineering, 4 (2007), pp. 62-64
- Srivastava, A. K., Shukla, S. K., Thermal Modeling of Indirect Solar Drying System: An Experimental Validation, Distributed Generation & Alternative Energy Journal, 32 (2017) 3, pp. 19-51
- Vijayan, S., et al., Mathematical Modeling and Performance Analysis of Thin Layer Drying of Bitter Gourd in Sensible Storage Based Indirect Solar Dryer, Innovative Food Science and Emerging Technol-ogies, 36 (2016), Aug., pp. 59-67
- Midilli A, et al., A New Model for Single Layer Drying, Drying Technology 20 (2002) 7, pp. 1503-1513
- El-Sebaii, A. A., Shalaby S. M., Experimental Investigation of an Indirect-Mode Forced Convection So-lar Dryer for Drying Thymus and Mint, Energy Conversion and Management, 74 (2013), Oct., pp. 109-116
- Alibas, I., Microwave, Air and Combined Microwave-Air Drying Parameters of Pumpkin Slices, LWT 40 (2007), 8, pp. 1445-1451
- Demirhan, E., Ozbek, B., Thin-Layer Drying Characteristics and Modeling of Celery Leaves Undergo-ing Microwave Treatment, Chemical Engineering Communications, 198 (2011), 7, pp. 957-975
- Sarimeseli, A., Microwave Drying Characteristics of Coriander (Coriandrum Sativum L.) Leaves, Ener-gy Conversion and Management, 52 (2011), 2, pp. 1449-1453
- Alibas, O. I., et al., Microwave Drying Kinetics of Spinach, Journal of Food Engineering 78 (2007), 2, pp. 577-583
- Holman, J. P., Experimental Methods for Engineers, McGraw-Hill Book Co., Singapore, 1994