Numerical analysis of latent heat storage system with encapsulated phase change material in spherical capsules

Abstract

Abstract. Solar energy has been considered as one of the promising solutions to replace the fossil fuels. To generate electricity beyond normal daylight hours, thermal energy storage systems (TES) play a vital role in concentrated solar power (CSP) plants. Thus, a significant focus has been given on the improvement of TES systems from the past few decades. In this study, a numerical model is developed to obtain the detailed heat transfer characteristics of lab-scale latent thermal energy storage system, which consists of molten salt encapsulated spherical capsules and air. The melting process and the corresponding temperature and velocity distributions in every capsule of the system are predicted. The enthalpy-porosity approach is used to model the phase change region. The model is validated with the reported experimental results. Influence of initial condition on the thermal performance of the TES system is predicted.

Paraffin As a Phase Change Material to Improve Building Performance: An Overview of Applications and Thermal Conductivity Enhancement Techniques

“…-In solar storage tanks to prolong the time of heat for later use in solar heating [38][39][40][41][42][43], solar domestic hot water [44], solar cooling and air-conditioning systems [45][46][47][48][49][50]. -To store solar heat to be used after sunset to extend water productivity in solar distillers [51][52][53][54][55] and enhance solar drying and other solar systems [56][57][58][59].…”

Thermal Energy Storage technologies for the optimal management of metal hydride hydrogen storage systems

“…Starting from the experiences of the authors about PCM [12] and MH [4] [13] applications and being inspired by other studies that have already investigated this concept of coupling TES and MH for their optimal thermal management [14] (both thermochemical [15] and latent heat energy storage [16]) , this study proposes a simplified modelling procedure for the sizing and the techno-economic feasibility assessment of the coupling of MH and PCM (starting from materials main thermodynamic properties) for their optimal thermal management and minimization of OPEX. Such approach was applied to a 1 MW PEM electrolyser coupled to a 1 MW PV rooftop (with Hydrogen used in an industrial process), sizing PCM system that could guarantee a proper management of the MH storage without any support by a compressor also in order to investigate which could be the cost that PCM should target to make this integrated PCM+MH storage techno-economically viable.…”