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Volume 7 Innovative Energy & Research
ISSN: 2576-1463 Advanced Energy Materials 2018
August 13-14, 2018
August 13-14, 2018 | Dublin, Ireland
20th International Conference on
Advanced Energy Materials and Research
Experimental analysis of the behavior of OM37 phase change material during discharge stage
Arvind Kumar and Vikram Soni
Indian Institute of Technology Kanpur, India
S olidification of phase change materials (PCMs) in thermal energy storage (TES) systems, in general, constitute a challenging
research area due to numerous intricacies involved in the process. In PCM based TES systems, the stability of these materials
during the discharging stage is one of the main concerns. One of the major contributors to this key problem is the existence of
undercooling (also referred to as subcooling or supercooling of the liquid) during the energy discharging stage (solidification
of the PCM). It not only degrades the thermal performance of the TES system but also causes the system prone to failure due
to repetitive thermal shocks. To capture the effect of undercooling on the system performance, an experimental investigation
of discharging stage in a PCM based TES system is performed. The transient real-time temperature distribution within the
cavity is measured by making the cavity instrumented with thermocouples. In addition, various solidification characteristics
visualization and measurement in real-time (for example, solidification interface, mushy zone, etc.) are captured using High-
Speed imaging. An interesting phenomenon of the formation of dendritic flakes and their detachment from the developing
mushy zone is observed. The detached dendritic particles provide many nucleation sites for the initiation of the solidification
in the domain. The insights from the current study of solidification process of OM37 PCM during the energy discharge stage
delineated really important insights to avoid failure of TES systems.
Innov Ener Res 2018, Volume 7
DOI: 10.4172/2576-1463-C1-003