An experimental and numerical investigation of heat transfer during technical grade paraffin melting and solidification in a shell-and-tube latent thermal energy storage unit

Analysis of the influence of operating conditions and geometric parameters on heat transfer in water-paraffin shell-and-tube latent thermal energy storage unit

“…They concluded that the laminar forced convective heat transfer inside the tube never reaches a thermally developed state and that must be solved simultaneously with the phase change of the PCM, so the application of CFD methods is required. Transient phase change heat transfer with a conjugate forced convection in a shell-and-tube latent thermal energy storage unit, with water as a HTF and technical grade paraffin as a PCM, has been experimentally and numerically analysed in [23,24]. The enthalpy method for modelling phase change heat transfer has been used.…”

Comparative Studies on Heat Transfer and Fluid Flow in Cored Brick and Pebble Bed Heaters

“…Xia et al (2010) [7] reported studies on fluid flow and heat transfer in packed bed for a LHS, where in the researchers introduced many hypotheses were into the previous packed bed models, which consequently influenced the accuracy and authenticity of the numerical calculation. Anica Trp (2005) [8] investigated the thermal behavior of LHS of the shell-and-tube type during charging and discharging cycle has numerically predicted for various heat transfer fluid working conditions and various geometric parameters and it showed good agreement with experimental results. Ezhilarasu and Krishnan (2013) [9] conducted experimental and computational studies on pebble bed heater operating in the range of inlet velocities various from 2 to 6 m/s and inlet temperature of 465K, then results had good agreement with numerical results.…”

A critical review of thermal management models and solutions of lithium-ion batteries for the development of pure electric vehicles

“…To reduce the thermal gradient inside the battery pack and solve the conflict between large heat storage capacity and low thermal conductivity (0.25 W/mK for paraffin wax), many approaches towards making composite PCMs have been conducted and they include 1) embedding a metal matrix into PCM; 2) impregnating porous materials [183][184][185][186][187]; 3) adding high thermal conductivity substances in paraffin [188,189]; and 4) developing latent heat thermal energy storage systems with unfinned and finned structures [190][191][192]. The improved thermal conductivity for the composite PCM (PCM/graphite matrix) from references [140,180,181] ranges from 3 W/mK to 16.6 W/mK.…”