Enhancement of Thermal Performance of Latent Heat Solar Storage System
Solar energy is available abundantly in the world, but it is not continuous and its intensity also varies with time. Due to above reason the acceptability and reliability of solar based thermal system is lower than conventional systems. A properly designed heat storage system increases the reliability of solar thermal systems by bridging the gap between the energy demand and availability. In the present work, two dimensional numerical simulation of the melting of heat storage material is presented in the horizontal annulus of double pipe latent heat storage system. Longitudinal fins were used as a thermal conductivity enhancement. Paraffin wax was used as a heat-storage or phase change material (PCM). Constant wall temperature is applied to heat transfer tube. Presented two-dimensional numerical analysis shows the movement of melting front in the finned cylindrical annulus for analyzing the thermal behavior of the system during melting.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1124803Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1038
 Reddy Sudhakar and Jyoti P. Painuly. "Diffusion of renewable energy technologies—barriers and stakeholders’ perspectives." Renewable Energy 29(9) (2004): 1431-1447.
 Khodadadi J.M. and Y. Zhang, “Effects of buoyancy-driven convection on melting within spherical containers”, Heat and Mass transfer. 44 (2001) :1605-1618.
 Zalba B.N., “Review on thermal energy storage with phase change: materials, heat transfer analysis and applications”. Applied Thermal Engineering, 23(3) (2003): 251-283.
 Heim D., and Clarke, J. A. “Numerical modelling and thermal simulation of PCM–gypsum composites with ESP-r”. Energy and buildings, 36(8) (2004) : 795-805.
 Ibáñez Manuel, Ana Lázaro, Belén Zalba, Luisa F. Cabeza. "An approach to the simulation of PCMs in building applications using TRNSYS." Applied Thermal Engineering 25(11) (2005): 1796-1807.
 Hosseini, M. J., A. A. Ranjbar, K. Sedighi, and M. Rahimi. "A combined experimental and computational study on the melting behavior of a medium temperature phase change storage material inside shell and tube heat exchanger." International Communications in Heat and Mass Transfer 39(9) (2012): 1416-1424.
 Al-abidi, Abduljalil A., Sohif Bin Mat, K. Sopian, M. Y. Sulaiman, and Abdulrahman Th Mohammed. "CFD applications for latent heat thermal energy storage: a review." Renewable and sustainable energy reviews 20 (2013): 353-363.
 Avci Mete, and M. Yusuf Yazici. "Experimental study of thermal energy storage characteristics of a paraffin in a horizontal tube-in-shell storage unit". Energy conversion and management, 73 (2013): 271-277.
 Hosseini M. J., M. Rahimi, and R. Bahrampoury. "Experimental and computational evolution of a shell and tube heat exchanger as a PCM thermal storage system." International Communications in Heat and Mass Transfer, 50 (2014): 128-136
 Darzi, AhmadAli Rabienataj, Mousa Farhadi, and Kurosh Sedighi. "Numerical study of melting inside concentric and eccentric horizontal annulus." Applied Mathematical Modelling, 36(9) (2012): 4080-4086.
 Baal Birol, and Ahmet Ünal. "Numerical evaluation of a triple concentric-tube latent heat thermal energy storage." Solar Energy, 92 (2013): 196-205.
 Dhaidan, Nabeel S., J. M. Khodadadi, Tahseen A. Al-Hattab, and Saad M. Al-Mashat. "Experimental and numerical investigation of melting of NePCM inside an annular container under a constant heat flux including the effect of eccentricity." International Journal of Heat and Mass Transfer 67 (2013): 455-468.
 Khillarkar, D. B., Z. X. Gong, and A. S. Mujumdar. "Melting of a phase change material in concentric horizontal annuli of arbitrary cross-section." Applied Thermal Engineering 20(10) (2000): 893-912.
 Patankar S.V., Numerical methods in heat transfer and fluid flow, Hemisphere Publishing Corporation, Washington, DC, 1980.
 Ferziger J. H. and M. Peric, Computational Methods for Fluid Dynamics, Springer, 2002.
 Brent A. D., V. R. Voller, and K. J. Reid, “Enthalpy-porosity technique for modeling convection-diffusion phase change: application to the melting of a pure metal,” Numerical Heat Transfer, 13(3) (1988):297–318.
 Z.X. Gong, S. Devahastin, and A. S. Mujumdar, “Enhanced heat transfer in free convection-dominated melting in a rectangular cavity with an isothermal vertical wall,” Applied Thermal Engineering, 19(12) (1999):1237–1251.
 Shmueli, H., Ziskind, G., Letan, R., Melting in a vertical cylindrical tube: numerical investigation and comparison with experiments, International Journal of Heat and Mass Transfer, 53 (2010): 4082-4091.
 Adine, Hamid Ait, and Hamid El Qarnia. "Numerical analysis of the thermal behaviour of a shell-and-tube heat storage unit using phase change materials."Applied mathematical modeling, 33(4) (2009): 2132-2144.