Development of binary eutectic organic phase change materials for solar thermal energy storage systems
Anuradha Gupta1, Kamal K. Kushwah2, Sujeet K. Mahobia3, V.V.S. Murty4

1Anuradha Gupta*, Physics Department, Govt. Auto. Holkar Science College, Indore, India.
2Kamal K. Kushwah, Applied Physics Department, Jabalpur Engineering College, Jabalpur, India.
3Sujeet K. Mahobia, Applied Physics Dpartment, Jabalpur Engineering College, Jabalpur, India.
4V.V.S. Murty, Physics Department, Govt. Auto. Holkar Science College, Indore, India.

Manuscript received on November 15, 2019. | Revised Manuscript received on 20 November, 2019. | Manuscript published on December 10, 2019. | PP: 2207-2210 | Volume-9 Issue-2, December 2019. | Retrieval Number: B7570129219/2019©BEIESP | DOI: 10.35940/ijitee.B7570.129219
Open Access | Ethics and Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (

Abstract: Solar thermal energy storage unit anchored fatty acids as Phase Change Materials (PCMs) having narrow range of transition temperature and high latent heat of fusion. In this paper, a new novel eutectic PCM was developed by using a fatty acid (acetamide) and non-paraffin organic PCM (acetanilide) for a sharp melting point and high latent heat of fusion. The optimized eutectic PCM may be used for middle temperature range solar thermal energy storage systems. The binary mixture of acetamide and acetanilide at various compositions by mass ratio (wt%) was prepared and optimized experimentally for lowest value of melting point at a eutectic mixture composition of 60 wt% of acetamide and 40 wt% of acetanilide. Eutectic PCM was analyzed by Differential Scanning Calorimetry (DSC) and Field-Emission Scanning Electron Microscopy (FE-SEM). DSC results revealed that optimized eutectic PCM has a sharp melting point of 65.37°C and high latent heat of fusion of 224.67 kJ/kg. Accelerated thermal cycle testing of optimized eutectic PCM was performed for 100 melting and freezing cycles and change in melting temperature and latent heat of fusion was acceptable. 
Keywords: DSC, Eutectic, Latent heat Thermal Energy storage, Solar Thermal Energy
Scope of the Article: Thermal Engineering