Phase change materials effect on the thermal radius and energy storage capacity of energy piles: Experimental and numerical study
作者： M.Z. Saghir , A.M. Bayomy , M.M. Mousa
DOI: 10.1016/J.IJFT.2021.100094
关键词: Nuclear engineering 、 Laminar flow 、 Thermal energy storage 、 Heat pump 、 Coefficient of performance 、 Energy storage 、 Turbulence 、 Materials science 、 Renewable energy 、 Geothermal energy
摘要: Abstract Geothermal energy is a renewable source whose use has been increased dramatically. It primarily harvested by employing ground heat pump (GSHP) technology due to its high coefficient of performance (COP) and low greenhouse gas emissions. This study aims present potential solution the challenges preventing higher adoption rate for using building foundation piles as exchanger (GHE) implementing phase change materials (PCM) containers into concrete shell. The was conducted experimentally two lab-scaled (with without PCM), with 3 layers insulation. CFD numerical model developed validated against experimental data. modified model, replacing three insulations sand layer, used effect different operating conditions on storage capacity. Results revealed that PCM from 16.4 48.2 kJ/kg (in case 2), while temperature distribution always lower during charging, smaller thermal radius piles. By increasing flow laminar regions turbulent regions, capacity 10%. recommended inside GHE selecting melting according time at which peak load occurs.
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