This communication presents the experimental study and performance analysis of a solar air heater with and without phase change material (PCM) viz. paraffin wax and hytherm oil. There are three different arrangements viz. without PCM, with PCM and with hytherm oil to study the comparative performance of this experimental system. Inlet, outlet temperatures and radiation with respect to time have been recorded and found that the output temperature in case with thermal energy storage (TES) is higher than that of without TES, besides, the outlet temperature with paraffin wax is slightly greater than that of with hytherm oil. Also there is no energy gain in the evening in case of without TES but in case of with TES there is a heat gain for around 4 h in the evening which gives the backup for hot air for around four more hours which is the main advantage of this systems with TES. Based on the data, the efficiency of the system has been calculated and it is noted that the efficiency in the case of heat storage is higher than that of without TES, besides the efficiency in the case of the paraffin wax is slightly higher than that of the hytherm oil case.
1. Kurtbas, I, Turgut, E. Experimental investigation of solar air heater with free and fixed fins: efficiency and exergy loss. Int J Sci Technol. 2006;1:75–82.
Kurtbas, I, Turgut, E. Experimental investigation of solar air heater with free and fixed fins: efficiency and exergy loss. Int J Sci Technol. 2006;1:75–82.)| false
Esen, H. Experimental energy and exergy analysis of a double-flow solar air heater having different obstacles on absorber plates. Build Environ. 2008;43:1046–1054. 10.1016/j.buildenv.2007.02.016.)| false
Ucar, A, Inallı, M. Thermal and exergy analysis of solar air collectors with passive augmentation techniques. Int Commun Heat Mass Transf. 2006;33:1281–1290. 10.1016/j.icheatmasstransfer.2006.08.006.)| false
Ali, SY. Study and optimization of the thermal performances of the offset rectangular plate fin absorber plates with various glazing. Renew Energy. 2005;30:271–280. 10.1016/j.renene.2004.04.009.)| false
9. Torres-Reyes, E, Navarrete-Gonzalez, JJ, Zaleta-Aguilar, A, Cervantes-de Gortari, JG. Optimal process of solar to thermal energy conversion and design of irreversible flat-plate solar collectors. Energy. 2003;28:99–113. .
Torres-Reyes, E, Navarrete-Gonzalez, JJ, Zaleta-Aguilar, A, Cervantes-de Gortari, JG. Optimal process of solar to thermal energy conversion and design of irreversible flat-plate solar collectors. Energy. 2003;28:99–113. 10.1016/S0360-5442(02)00095-6.)| false
Gupta, MK, Kaushik, SC. Performance evaluation of solar air heater having expanded metal mesh as artificial roughness on absorber plate. Int J Therm Sci. 2009;48:1007–1016. 10.1016/j.ijthermalsci.2008.08.011.)| false
Agrawal, B, Tiwari, GN. Optimizing the energy and exergy of building integrated photovoltaic thermal (BIPVT) systems under cold climatic conditions. Appl Energy. 2010;87:417–426. 10.1016/j.apenergy.2009.06.011.)| false
Ozgen, F, Esen, M, Esen, H. Experimental investigation of thermal performance of a double flow solar air heater having aluminium cans. Renew Energy. 2009;34:2391–2398. 10.1016/j.renene.2009.03.029.)| false
Gao, W, Lin, W, Liu, T, Xia, C. Analytical and experimental studies on the thermal performance of cross corrugated and flat plate solar air heaters. Appl Energy. 2007;84:425–441. 10.1016/j.apenergy.2006.02.005.)| false
Chow, TT, Pei, G, Fong, KF, Lin, Z, Chan, ALS, Ji, J. Energy and exergy analysis of photovoltaic thermal collector with and without glass cover. Appl Energy. 2009;86:310–316. 10.1016/j.apenergy.2008.04.016.)| false
Zhou, G, Zhang, Y, Zhang, Q, Lin, K, Di, H. Performance of a hybrid heating system with thermal storage using shape-stabilized phase-change material plates. Appl Energy. 2007;84: 101068–1077. 10.1016/j.apenergy.2006.09.015.)| false
Alta, D, Bilgili, E, Ertekin, C, Yaldiz, O. Experimental investigation of three different solar air heaters: energy and exergy analyses. Appl Energy. 2010;87:2953–2973. 10.1016/j.apenergy.2010.04.016.)| false
Akpinar, KE, Kocyigit, F. Energy and exergy analysis of a new flat-plate solar air heater having different obstacles on absorber plates. Appl Energy. 2010;87:3438–3450. 10.1016/j.apenergy.2010.05.017.)| false
Omojaro, AP, Aldabbagh, LBY. Experimental performance of single and double pass solar air heater with fins and steel wire mesh as absorber. Appl Energy. 2010;87:3759–3765. 10.1016/j.apenergy.2010.06.020.)| false