Efficacy of porous foam on discharging of phase change material
Phase change materials and nanoparticles in a porous media were used in Ghalambaz et al. [23] non-equilibrium analysis of free displacement heat transfer in a square chamber. Their outcomes showed that in the hot wall when the temperature arrives at its least worth, the majority of the space of the cavity is involved by NEPCM.
Heat transfer investigation on the thermal energy storage using
The use of high-conductivity porous medium is an effective method to enhance the heat transfer rate of phase change material (PCM) in thermal energy
Effect of functional modification of porous medium on phase change
The main factors affecting the phase change behavior of fs-CPCMs included functional group types of modifiers and pore structure characteristics of porous media. The heat storage characteristics were effectively improved by regulating surface properties and pore/structure features of encapsulation media, which was mainly
Phase Change Materials for Energy Storage
There are many kinds of phase change materials for energy storage, such as salt hydrates, molten salts, paraffin, sugar alcohols, fatty acids, etc. The performance of hydrogen desorption from a metal hydride with heat supply by a phase change material incorporated in porous media (metal foam): Heat and mass transfer
Numerical research of solid-liquid phase change process in porous media
On the basis of the method, porous theory solved 2-D solid-liquid phase change melting process in porous media. Numerical results show that porous media has a certain effect on solid-liquid phase change process.
Numerical study of heat transfer characteristics of phase change
The emergence of phase change materials (PCMs) and phase change heat storage technology has helped to address the uneven distribution of solar energy in time and location, and due to their benefits of high heat storage density, large latent heat, and a steady phase change state, they are commonly employed in solar heat storage
Analysis of the effects of porous media parameters and
Using porous media causes total efficiency to increase by 25%. Integrating photovoltaic thermal collectors and thermal energy storage systems using phase change materials with rotary desiccant cooling systems. Sustain. Cities Soc., 36 (2018), pp. 131-143, 10.1016/j.scs.2017.10.021.
Evaluation and optimization of melting performance for
In this paper, melting performance of phase change materials (PCMs) in a horizontal concentric–tube thermal energy storage (TES) unit was numerically investigated with consideration of natural convection. Porous media were employed to enhance the thermal response of PCMs.
Numerical modelling of phase change material melting process
The aim of this paper is to study the influence of enclosure size in latent heat thermal energy storage systems embedded in a porous medium for domestic
[PDF] Numerical modelling of phase change material melting
The aim of this paper is to study the influence of enclosure size in latent heat thermal energy storage systems embedded in a porous medium for domestic usage of latent heat thermal energy storage heat exchangers. A 2-D rectangular enclosure is considered as the computational domain to study the heat transfer improvement for a
Thermal behaviors and performance of phase change
1. Introduction. Thanks to the advantages of phase change materials (PCMs) (i.e., substantial latent heat, suitable phase change temperature, and convenience for application), PCMs have been widely used in thermal energy storage (TES) [1] and thermal control systems (TCS) [2], [3].However, the low thermal conductivity of PCMs
Natural convection solid/liquid phase change in porous media
Thermal energy storage with phase change materials (PCMs) is a promising technology to improve energy efficiency in the fields of renewable energy, electronic cooling, buildings, etc. Findings reveal up to 86% acceleration in melting compared to pure PCM at 80% energy storage, and the porous media with porosity
Experimental analysis to improve charge/discharge of thermal energy
LHTES, as seen in Fig. 1, is a kind of passive energy storage in the system that is based on phase change materials (PCMs).PCMs save the latent heat energy in their phase transition. Based on their properties, these materials are divided into three types: organic, inorganic, and eutectic [11] cause of the PCMs'' suitable properties, for
Lattice Boltzmann method for solid-liquid phase change in porous media
Request PDF | On Jan 1, 2006, J.Y. Qian and others published Lattice Boltzmann method for solid-liquid phase change in porous media | Find, read and cite all the research you need on ResearchGate
(PDF) Phase-change processes in porous media
For the cryosuction-induced fractures in saturated porous media, the water freezing is treated as a phase-change process. This is modeled using a phase
A solid–liquid model based on lattice Boltzmann method for phase change
This paper reviews the development of latent heat thermal energy storage systems studied detailing various phase change materials (PCMs) investigated over the last three decades, the heat transfer
Heat transfer enhanced by angle-optimized fan-shaped porous
High-thermal-conductivity porous medium can effectively improve the heat transfer rate of solid-liquid phase change in thermal energy storage system, enhancing the usage efficiency of renewable energy. In this paper, the fan-shaped porous medium was applied to accelerate heat transfer rate of phase change material in thermal energy
An overview of underground energy storage in porous media
The scale and duration of energy storage are usually highly correlated. The installed capacity of small-scale energy storage engineering is usually less than 10 MW, while it can reach hundreds of MW for large-scale energy storage engineering (Buffo et al., 2019).Short-term small-scale energy storage systems differ from long-term large-scale
A State of the Art Review on Sensible and Latent Heat Thermal
The present review has focused on mesoscopic modeling approaches for single-phase and solid-liquid phase change heat transfer in porous media, which are
(PDF) Phase-change processes in porous media
For the cryosuction-induced fractures in saturated porous media, the water freezing is treated as a phase-change process. This is modeled using a phase-field approach, in which the thermal energy
Heat transfer enhanced by angle-optimized fan-shaped porous
High-thermal-conductivity porous medium can effectively improve the heat transfer rate of solid-liquid phase change in thermal energy storage system, enhancing
Experimental investigation on thermal performance of porous
The device consisted of porous phase change bricks, heating plates and insulation cotton, etc. Multi-channels were formed inside phase change bricks to enhance the heat transfer of air and PCMs. The heat storage unit consisted of 8 columns of phase change bricks, each column contained 24 phase change bricks, resulting in a total
Evaluation of phase change material melting process in an energy
The marriage of two-dimensional materials and phase change materials for energy storage, conversion and applications. EnergyChem, 4 (2022), Article 100071. Effect of PCM and porous media/nanofluid on the thermal efficiency of microchannel heat sinks. International Communications in Heat and Mass Transfer, 127 (2021), Article 105546.
Experimental Investigation on Solar Water Heater Integrated with
Evacuated tube heat pipe solar collector as a passive solar water heating system is a simple, reliable, and cost-effective way to capture the sun''s thermal energy to supply hot water to homes. In the proposed system, the manifold is reshaped to a tank and filled with phase change materials (PCM) and porous media, which the PCM acts as a
Heat transfer investigation on the thermal energy storage using phase
The use of high-conductivity porous medium is an effective method to enhance the heat transfer rate of phase change material (PCM) in thermal energy storage (TES), reducing the energy consumption of low-carbon buildings.
Equations Governing Flow and Transport in Porous Media
With burgeoning applications in porous media, a wide variety of possibilities may be realized during flow and transport. While single and multiphase flows in porous media are discussed in the following sections, several other specialized topics such as radiative transport and solid–fluid phase change have not been covered [4,5,6].The
Lattice Boltzmann modeling of melting of phase change materials
To avoid iteration procedure for treatment phase change, Wu et al. proposed a LB model to simulate solid-liquid phase change problems in porous media [33]. Among the above mentioned studies, most of them are based on the assumption of local thermal equilibrium between solid matrix and PCM phase, because this assumption
Experimental and numerical studies on molten salt migration in porous
Wu et al. [16] presented 1-D numerical model to analyze molten-salt packed-bed thermal energy storage system with phase change material capsules. For heat and mass transfer in porous media as soil or sand, available researchers mainly focused on the transport of fluid, salt solution and contaminant in porous rock.
Heat transfer in porous medium composite phase change
The results show that the porous media accelerate melting of the phase change materials (PCM), composite phase change materials can slow the battery temperature increase
Phase Change Thermal Energy Storage Enabled by an In Situ Formed Porous
Herein, for the first time, a one-pot one-step (OPOS) protocol is developed for synthesizing TiO 2-supported PCM composite, in which porous TiO 2 is formed in situ in the solvent of melted PCMs and directly produces the desired thermal energy storage materials with the completion of the reaction. The preparation features straightforward
A Two-Temperature Model for Solid/Liquid Phase Change
Solid-liquid phase change in porous media occurs in many practical applications, such as thermal energy storage, freezing of moist soils, and manufacture of metal-matrix composites. Of par-ticular interest to this study are thermal energy storage units with thermal conductivity enhancers e.g., metal foams for transient thermal control of
The local non-equilibrium heat transfer in phase change materials
Thermal energy storage with phase change materials (PCMs) is a promising technology to improve energy efficiency in the fields of renewable energy, electronic cooling, buildings, etc. However, the low thermal conductivity of PCMs decreases the heat transfer rate and leads to low energy efficiency. Adding a porous skeleton with
سابق：china s energy storage development history and policies
التالي：analysis of the prospects of energy storage of state grid corporation of china
