Development of soft eutectic phase change material modified with expanded graphite for thermal energy storage and human comfort applications

Energy & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Organic phase change materials (PCMs) have gained huge importance for thermal energy storage systems, but their applicability is restricted due to low conductivity and hardness. The aim of this research work solve the problem by developing a novel organic binary eutectic PCM employing paraffin wax coconut oil in mixture (ratio 1:1) soften comfort applications. 3D expanded graphite (EG) was used as filler enhance thermophysical properties eutectic-EG composite formed melt-mixing technique. percolation limit EG 0.5 wt-% form network matrix. enhanced significantly from 0.2 W m −1 K 0.55 at 2 pristine PCM. Differential scanning calorimetry (DSC) carried out analyse enthalpies temperatures composites. 50 consecutive heating cooling cycles performed conventional system showed good reliability composite. numerical 2D simulation conducted reveal heat propagation behaviour developed with post-EG addition validate results obtained experimentally. cost analysis reveals that per mean power approximately 100% lower than composite's outstanding property indicates its potential soft pads/cartridges human also solar applications medium temperature ranges.

Language: Английский

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Phase change materials in solar energy storage: Recent progress, environmental impact, challenges, and perspectives

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 114, P. 115762 - 115762

Published: Feb. 14, 2025

Language: Английский

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Thermo-kinetic behaviour of green synthesized nanomaterial enhanced organic phase change material: Model fitting approach

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 348, P. 119439 - 119439

Published: Oct. 25, 2023

Language: Английский

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Melting behavior of an organic phase change material in a square thermal energy storage capsule with an array of wire electrodes

Applied Thermal Engineering, Journal Year: 2023, Volume and Issue: 228, P. 120492 - 120492

Published: March 30, 2023

A numerical analysis of melting an organic phase change material (PCM) in a square thermal energy storage (TES) capsule with array high voltage wire electrodes has been performed. Fully coupled set governing equations for fluid flow, heat transfer, change, electric field and charge transport are solved using the opensource finite-volume framework OpenFOAM. The melt interface is tracked fixed grid approach based on enthalpy-porosity method. main objective study to investigate effect direction process under different configurations grounded walls. transient evolution presence mapped terms liquid fraction, mean velocity Coulomb force. flow morphology, temperature field, distribution at electrode visualized. Electric leads generation coalescence small vortices that influence interface, total performance. 12 cases wall lead directions considered, herein. Grounding left right walls TES notably Case 4 led shortest time 2.68 h 97 % reduction, as compared case without (5.28 h). 5 negative impact (5.55 h), which 4.86 higher than In general, application increase achievable fraction given period 6 h. 2 all four maximum 0.97 9.39 (0.88). showed power capacity 17.2 kW 49.3 (8.7 kW). Results presented this provide deeper insights mechanisms will serve reference design module assisted electrohydrodynamic (EHD) induced by electrodes.

Language: Английский

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Nano-material based composite phase change materials and nanofluid for solar thermal energy storage applications: Featuring numerical and experimental approaches

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 98, P. 113032 - 113032

Published: Aug. 1, 2024

Language: Английский

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