International Scientific Journal

Authors of this Paper

External Links


The present study explores suitability of two phase change materials (PCM) for development of an active thermal storage system for a solar drying kiln by studying their melting and solidification behaviors. A double glass glazing prototype solar kiln was used in the study. The storage system consisted of a water storage tank with PCM placed inside the water in high density polyethylene containers. The water in the tank was heated with help of solar energy using an evacuated tube collector array. The melting and solidification temperature curves of PCM were obtained by charging and discharging the water tank. The study illustrated the utility of the PCM in using the stored thermal energy during their discharge to enhance the temperature inside the kiln. The rate of temperature reduction was found to be higher for paraffin wax as compared to a fatty acid based PCM. The water temperature during the discharge of the PCM showed dependence on the discharge characteristics of each PCM suggesting their suitability in designing active thermal storage systems.
PAPER REVISED: 2015-11-09
PAPER ACCEPTED: 2015-12-21
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 6, PAGES [2525 - 2532]
  1. Taylor, J.M. et al. Energy related aspects of timber drying. International Journal of Ambient Energy. 17(1996), 1, pp. 41-48.
  2. Comstock, G.K., Energy Requirements for Drying Wood Products. Forest Products Research Society Proceedings, 1975, No.P-75-13.
  3. Read, W.R. et al. Technical note-A solar timber kiln. Solar Energy, 15(1974), pp. 309-316.
  4. McCormic, P.O., Solar heating system for kiln drying lumber, Sunworld, 4(1980),6, pp. 204-207.
  5. Robbins, A.M., Solar lumber kilns: design ideas. New Mexico Energy Research and Development Institute, University of New Mexico, 1983.
  6. Zhang, Y.L., et al. Thermal Storage Technology on Solar Energy Wood Drying in China. Applied Mechanics and Materials, 71 -78 (2011), pp. 1191-1194.
  7. Font, J., et. al. Preliminary study of a heat storage unit using a solidsolidtransition. Solar Energy Materials and Solar Cells, 33 (1994), 2, pp. 169-176.
  8. Mulligan, J.C. et al., Microencapsulated phase-change material suspensions for heat transfer in spacecraft thermal systems, Journal of Spacecraft and Rockets, 33(1996), pp. 278-284.
  9. Hawlader, M.N.A. et al. Microencapsulated PCM thermal energy storage system. Applied Energy, 74(2003), I-2, pp. 195-202.
  10. Ahmad, A., et. al., Thermohydraulic performance of packed bed solar air heaters. Energy conversion and Management, 37 (1996), 2, pp. 205-214.
  11. Rai, A.K. and Kumar, A., A review on phase change materials & their applications, International Journal of Advanced Research in Engineering and Technology , 3(2012), 2, pp. 214-225.
  12. Garg, H.P., et. al. Solar Thermal Energy Storage. Dordrecht Holland: D. Reidel Publishing Co, 639 pp.,1985.
  13. Grodzka, P.G., Phase change storage systems. Chapter 25, Solar Energy Technology Handbook, Part A: Engineering Fundamentals, Ed. W.C. Dickinson and D.N. Cheremisimoff, Marcel Dekker, Inc, 1980.
  14. Kumar, S. et al. Innovative design, construction and performance evaluation of small solar timber drying kiln, Indian Forester, 141 (2015)11, pp. 1176-1182.
  15. Anonymous., Why choose pluss range of phase change materials. Available on (Accessed: 10-11-2014).
  16. IS:4654, Paraffin Wax specifications, Bureau of Indian Standards .Second revision, Manak Bhawan, 9 Bahadur Zafar Marg, New Delhi, 1993, pp 18.
  17. Reddigari, M.R., et al. Thermal energy storage system using phase change materials - constant heat source, Thermal Science, 16 (2012), 4, pp. 1097-1104.
  18. Devahastin, S. and Pitaksuriyarat, S., Use of latent heat storage to conserve energy during drying and its effect on drying kinetics of food products. Applied Thermal Engineering, 26 ( 2006), 14&15, pp. 1705-1713.
  19. Sharma, A. and Chen, C. R.. Solar Water Heating System with Phase Change Materials, International Review of Chemical Engineering, 1(2009), 4, pp. 297-307.
  20. Sharma, S.K. and Singh, S., Paraffin wax as phase change thermal storage material, Proceedings: First National Workshop on Solar Energy Storage, Chandigarh, march 16-18, pp 77-88, 1978.

© 2022 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