Eutectic composition of selected phase change materials for thermal energy storage applications

Olakunle F Isamotu, Nicholas A Musa, Joshua B Aluko, Maclawrence A Oriaifo


Latent heat storage in salt mixture has drawn so much attention because of the salt mixture’s capability of storing   large quantity of heat when compared to single salt thereby, making it more feasible for use as phase change material.  However it is worthwhile to find out among various combination of salts forming eutectic   mixtures, the one that has the best energy storage capability by evaluating   and comparing their melting points and latent heat storage. So in this research work, four different types of eutectic mixture of   salts were prepared and experimentally   investigated for the best thermal energy storage capability.  The first eutectic mixture consists of 2.6g of LiNO3, 6.4g of NH4NO3   and 1g of NaNO3. The second eutectic mixture consists of1.75g of LiNO3,   3.9g of NH4NO3 and 1.1g of KNO3. The third one consists of 5.2g of   LiNO3, 13.7g   of NH4NO3 and 1g of NH4Cl) and the fourth one consists of 1.77g of LiNO3, 2.94g of NH4NO3,  1g of NaNO3 and 1g of NaCl. The latent heat and the melting point of the respective salt and their eutectic mixture were determined using digital differential scanning Apparatus.  The results obtained showed that the melting points and latent heats of  the first, second, third and fourth eutectic mixture  were 79.50C and 112kJ/kg,  80.50C and 114kJ/kg,  81.40C and 109kJ/kg,  84.40C and 119kJ/kg respectively.  In view of this, the eutectic mixture of 1.77g of LiNO3, 2.94g of NH4NO3, 1g of NaNO3 and 1g of NaCl with melting point of 84.40C and latent heat of 119KJ/Kg was found to possess the best thermal energy storage capability compared to others..

Keywords—Eutectic mixture, Salts, Phase change materials (PCM), Latent heat storage

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Cao, L., Su, D., Tang, Y., Fang, G., and Tang, F. (2015). Properties evaluation and applications of thermal energystorage materials in buildings. Renewable and Sustainable Energy Reviews, 48, 500–522.

Sarbu I,and Sebarchievici C. A. (2018). Comprehensive Review of Thermal Energy Storage Sustain-ability open access Journal; 10(1):191.(

Julien, G.A, Emmanuel, L., Clément, A., Rufin, O.A., and Brice, A.S.(2013).Modeling solar energy transfer through roof material in Africa Sub-Saharan Regions.ISRN Renewable Energy. 2013. 10.1155/2013/480137, 632-645.

Prakash J, Garg HP, and Datta G (2008). A solar water heater with built-in latent heat storage. Energy Convers Manage;25(1):51–6.

Farid M.M, Khudhair A.M, Ali S. and Razack K. (2004). A review on phase change energy storage: Materials and applications. Energy Conversion and Management. 45. 1597-1615. 10.1016/j.enconman.2003.09.015.597–615

Ricerca, D. D. I. (2015). Modelling , design and analysis of innovative thermal energy storage systems using PCM for industrial processes , heat and power.

Kuboth, S., König-Haagen, A., and Brüggemann, D. (2017). Numerical analysis of shell-and-tube type latent thermal energy storage performance with different arrangements of circular fins. Energies, 10(3).

Furbo, Simon, Andersen, Elsa, and Schultz, J. (2008). Advanced storage concepts for solar thermal systems in low energy buildings.

Lin SC, Al-kayiem H.H, and Aris M.S.(2012). Experimental investigation on the performance enhancement of integrated PCM-flat plate solar collector. Journal of Applied Sciences; 12(9):2390–2396.

Pop, O., Fechete, L., and Balan, M. (2017). Numerical model for solidification and melting of PCM encapsulated in spherical shells. Energy Procedia, 112, 336–343.

Nussbaumer, T., Wakili, K. G., and Tanner, C. (2006). Applied Experimental and Numerical Investigation of the thermal performance of a protected vacuum- insulation system applied to a concrete wall, 83, 841–855.

Sharma, A., Tyagi, V. V., Chen, C. R., and Buddhi, D. (2009). Review on thermal energy storage with phase change materials and applications. Renewable and Sustainable Energy Reviews, 13(2), 318–345.

Mehling H and Cabeza L F (2008).Heat and cold storage with PCM: an up to date introduction into basics and applications

Rabin Y, Bar-Niv I, Korin E, and Mikic B.(1995). Integrated solar collector storage system based on a salt-hydrate phase change material. Solar Energy; 55:435–444.

Mettawee EBS, and Assassa GMR. (2006). Experimental study of a compact PCM solar collector. Energy; 31(14):2622–2632.

Eames P.C, and Griffiths P.W.(2006). Thermal behavior of integrated solar collector/storage unit with 65°C phase change material. Energy Conversion and Management. 47(20):3611–3618.

Saw C, and Al-Kayiem H.(2011). An investigation of integrated flat plate solar collector: Experimental measurement in IEEE. National Postgraduate Conference (NPC), 2011, pp. 1–6.

Naghavi M.S, Silaakhori M, Mehrali M, Simon H, Metselaar C, and Badruddin IA. (2014). Analytical thermal modeling of a heat pipe solar water heater system integrated with phase change material. Comput. Appl. Environ. Sci. Renew. Energy; 1:197–208.

Naghavi M.S, Ong KS, Badruddin IA, Mehrali M, Silakhori M, and Metselaar HSC (2015) Theoretical model of an evacuated tube heat pipe solar collector integrated withphase change material. Energy; 91:911–924.



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