Journal
THERMAL SCIENCE AND ENGINEERING PROGRESS
Volume 25, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.tsep.2021.100963
Keywords
PCM; Nanoparticles; Thermal performance; Heat storage; Experimental analysis; Heat conduction; Thermal efficiency
Funding
- European Union (European Social Fund-ESF) [MIS-5033021]
- State Scholarships Foundation (IKY) [MIS-5033021]
- Laboratory of Applied Thermodynamics, Thermal Engineering Section, School of Mechanical Engineering, National Technical University of Athens
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This paper presents an experimental analysis of organic PCM, focusing on improving thermal conductivity by adding nanoparticles. The presence of copper and aluminum oxide nanoparticles reduced thermal storage duration, with copper nanoparticles leading to a 25.3% reduction and Cu-Al2O3 hybrid nanoparticles reducing it by 10.8%.
In this paper, an experimental analysis of organic PCM is conducted. It includes an experimental study of paraffin type organic phase change material while suggesting a way to improve the low thermal conductivity, a feature that is the main disadvantage of especially organic phase change materials. In particular, temperature profiles of PCM for different hot source temperatures are examined, while determining the heat stored in the material and the speed at which the melting front moves under the assumption of uniform movement of the melt interface and solid material. Subsequently, and in order to increase the conductivity of the PCM and thus the rate of evolution, copper and aluminum oxide nanoparticles powder are added and the hybrid PCM is compared in terms of temperature profiles and storage capacity with the pure PCM. The presence of 0.165% Cu nanoparticles reduces the thermal charge duration by 25.3% while the presence of Cu-Al2O3 hybrid nanoparticles at a concentration of 0.165% -0.816% reduces the duration by 10.8%.
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