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Parametric study of solidification of PCM around a cylinder for ice-bank applications
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In this article, the authors present the results of a numerical parametric study of the solidification of a phase change material (PCM) around a cylinder carrying a heat transfer fluid (HTF) inside.Abstract:
This paper presents the results of a numerical parametric study of the solidification of a phase change material (PCM) around a cylinder carrying a heat-transfer fluid (HTF) inside. A pure conduction model is used for the PCM and tube wall, the finite volume method is used together with the interface immobilization technique for treating the phase-change process. The convection problem inside the tube is solved by an energy balance with a Nusselt number value, obtained from the steady-state values for constant wall heat-flux conditions. The effects of the HTF entry temperature, the initial PCM temperature and the thermal conductivity of the tube material on the evolution of the solidification front are studied. Results for the temperature distribution during the process, phase-change interface velocity and thermal energy stored in the system are also presented.read more
Citations
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Journal ArticleDOI
Review on thermal energy storage with phase change: materials, heat transfer analysis and applications
TL;DR: In this paper, a review of the history of thermal energy storage with solid-liquid phase change has been carried out and three aspects have been the focus of this review: materials, heat transfer and applications.
Journal ArticleDOI
A comparative study of thermal behaviour of a horizontal and vertical shell-and-tube energy storage using phase change materials
TL;DR: In this paper, thermal behavior in a vertical and horizontal shell-and-tube energy storage system using phase change materials (PCMs) is investigated and compared using a combined conduction and convection heat transfer model.
Journal ArticleDOI
PCM integrated to external building walls: An optimization study on maximum activation of latent heat
TL;DR: In this article, a comparative study is carried out for the wall coupled with PCM and the wall with phase stabilised PCM to reveal the contribution of latent heat to the thermal performance of the wall and to determine the location, thickness and melting temperature of PCM for the maximum exploitation of the latent heat for different climatic conditions.
Journal ArticleDOI
A review on cool thermal storage technologies and operating strategies
Yat Huang Yau,Behzad Rismanchi +1 more
TL;DR: The thermal energy storage (TES) system for building cooling applications is a promising technology that is continuously improving as mentioned in this paper, and a well-designed TES system would effectively decrease the electricity demand with a reasonable cost.
Journal ArticleDOI
Phase change material based cooling of photovoltaic panel: A simplified numerical model for the optimization of the phase change material layer and general economic evaluation
TL;DR: In this article, a simplified numerical model was developed to be able to analyze the expected efficiency improvement of a PV-PCM system as well as the expected reduction of the PV panel's operating temperature.
References
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Journal ArticleDOI
Numerical simulation of a shell-and-tube latent heat thermal energy storage unit
TL;DR: In this article, a multidimensional phase change problem is tackled with an enthalpy-based method coupled to the convective heat transfer from the heat transfer fluid (HTF).
Journal ArticleDOI
Performance characteristics of a thermal energy storage module - A transient PCM/forced convection conjugate analysis
Yiding Cao,Amir Faghri +1 more
TL;DR: In this article, the performance of a thermal energy storage module is simulated numerically and the change of phase of the phase change material (PCM) and the transient forced convective heat transfer for the transfer fluid with low Prandtl numbers are solved simultaneously as a conjugate problem.
Journal ArticleDOI
Semi-analytical solution of thermal energy storage system with conjugate laminar forced convection
Yuwen Zhang,Amir Faghri +1 more
TL;DR: In this article, a thermal energy storage system with a hollow cylinder of Phase Change Material (PCM) was studied semi-analytically, and the melting of the PCM was solved by using an integral approximate method, and heat transfer in the container wall was treated as a radial one dimensional conduction problem.
Journal ArticleDOI
Phase change thermal storage : transient behaviour analysis of a solar receiver/storage module using the enthalpy method
C. Bellecci,M. Conti +1 more
TL;DR: In this article, the performance of a solar receiver unit with a built-in thermal storage system is simulated by the enthalpy method, and the results indicate some criteria to determine the optimal size of the storage system.
Journal ArticleDOI
Numerical solution of moving boundary problems by boundary immobilization and a control-volume-based finite-difference scheme
TL;DR: In this paper, a methodology is presented for numerical solution of transient two-dimensional diffusion-type problems (e.g., heat conduction) in which one of the boundaries of the solution domain moves with time.
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