buildings, medical equipment, high temperature warning, thermal energy storage, and temperature control in the future. Keywords Anti-liquid leakage · Shape memory · Switchable optical transparency · Thermal energy storage · PMMA plexiglass 1 Introduction

A novel enhancement of shape/thermal stability and energy-storage capacity of phase change materials through the formation of composites with 3D porous (3,6)-connected metal–organic framework Chem. Eng. J., 389 ( 2020 ), Article 124430, 10.1016/j.cej.2020.124430

Benefiting from the synergistic effects, we achieved a high energy density of 20.8 joules per cubic centimeter with an ultrahigh efficiency of 97.5% in the MLCCs. This approach should be universally applicable to designing high-performance dielectrics for energy storage and other related functionalities.

The traditional leakage protection devices applied in TN-S systems cannot isolate single-phase leakage faults while maintaining power supply. Thus, a leakage protection method based on flexible regulation of the

Hierarchical macro-nanoporous metal for shape-stable, leakage-free, conductive PCMs. • Anti-leakage due to nanopores and high energy density due to macropores (90 vol%) • Concept proven for hierarchical macro-nanoporous copper impregnated with paraffin. • A

In recent years, phase change materials (PCMs) have attracted considerable attention due to their potential to revolutionize thermal energy storage (TES) systems. Their high latent heat storage capacity and ability to store and release thermal energy at a constant temperature make them promising candidates for TES applications.

Abstract: This article presents a three-phase single-stage isolated flyback-based power factor correction (PFC) converter with a clamping circuit to recover the

This paper reviews the main research progress of porous support materials (such as metal foam, porous polymer, carbon-based three-dimensional porous materials,

This article presents an enhanced power quality solar photovoltaic (PV) inverter enabling common-mode leakage current elimination. A three-phase transformerless solar energy conversion system is considered here, which, along with peak active-power production from PV array, ensures different power quality improvement capabilities such as grid current

The energy-storage properties of PCM samples, including phase change temperature and latent heat of phase change, were measured by differential scanning calorimetry (DSC). DSC was performed in a TA Q200 (Thermal Analysis Corporation, USA) at a heating/cooling rate of 2 °C min −1 under a nitrogen atmosphere.

The phase change microcapsules with composite shell can come across with additional functions to meet other extra requirements in addition to thermal energy storage and management [21]. At present, there have been several reports on organic-inorganic hybrid shell microcapsules.

PCMs are a passive, two-phase thermal storage technology that utilizes latent heat to absorb thermal energy. A notable advantage is the high energy density of PCMs, enabling them to store heat in a relatively small volume, making them beneficial for applications with limited space [ [2], [3], [4] ].

rotection of AC power lines and low frequency signal lines. Since MOV is mainly used for the surge protection of power supply interfaces, it has a wide range of applications, including LED driver, industrial control, new energy, security systems, communication systems, con. umer electronics, household appliances and instrumentation. The.

With a number of energy storage converters connected to the grid, transient instabilities about energy storage converters are more likely to appear when some problems happen in the grid. In order to work out the difficult problem about the instability of energy storage converters, this paper proposes an approach of modifying the phase-locked loop (PLL)

Thermal energy storage (TES) techniques are classified into thermochemical energy storage, sensible heat storage, and latent heat storage (LHS). [ 1, 2, 3 ] Comparatively, LHS using phase change materials (PCMs) is considered a better option because it can reversibly store and release large quantities of thermal energy

As one of the most effective energy storage compounds, phase change materials (PCMS) play an important role in energy conservation and storage. However, the inherent poor

Leakage-free phase change materials (PCM) are used as passive energy storage systems that thermoregulate indoor environments. In this research, we synthesized highly porous hybrid materials based on non-covalent physical interactions between (poly)ethylene glycol (PEG) and modified cellulose nanofibrils (CNF), namely lignin

Abstract. Multi-functional polymer gel materials based on thermal phase change materials (PCMs) are rapidly advancing the application of thermal energy storage (TES) in

Compared to the heat of fusion for neat component material (293 J/g for PE [30]), the heat of fusion measurement from DSC normalized by the component mass fraction was utilized to calculate the degree of crystallinity.A value of 240.7 J/g was utilized as the heat of fusion for neat paraffin based on experimental DSC tests.. This value is

Test the operation of earth-leakage protection as follows: Step. Action. 1. Check that the circuit breaker is closed and the control unit is supplied with power (ready LED is flashing). 2. Use a thin screwdriver to briefly push in (< 1 s) the test button ( T) on the front face of the MicroLogic X control unit.

This paper presents a novel topology for the generation of adjustable frequency and magnitude pulsewidth-modulated (PWM) three-phase ac from a balanced three-phase ac source with a high-frequency ac link. The proposed single-stage power electronic transformer (PET) with bidirectional power flow capability may find application

Phase-change materials are of great interest in solving mismatch between energy supply and demand. However, the vulnerability of solid–liquid phase-change materials to leakage during the phase-chan

6.3.2 Simulation Results. The simulation parameters for the three-phase matrix-based isolated AC-DC converter are presented through Table 6.2, which are keyed into a PLECS simulation to study the converter''s operation. The LVAC side line-line voltage is 415 V (50 Hz) and the LVDC side voltage is considered as 96 V DC.

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In this review, we aim at elucidating the advancement of the solid–liquid–gas three-phase interfaces in the electrocatalytic field, by highlighting their significance and presenting recent progress on state-of-the-art development to provide guidelines and inspirations for

The leakage tests showed that the 1.0 mm thick MER provided excellent protection against leakage, significantly reducing leakage of the liquid phase and moisture escape. The composite phase-change material CPCM/MER demonstrated satisfactory results in photothermal conversion experiments. 2% CuS/rGO addition to CPCM/MER

A source-based commutation of currents associated with energy in leakage inductance (termed as leakage energy) has been proposed. This results in soft

Multi-functional polymer gel materials based on thermal phase change materials (PCMs) are rapidly advancing the application of thermal energy storage (TES) in energy-saving buildings. In this work, we report multi-functional PCM composites with anti-liquid leakage, shape memory, switchable optical transparency, and thermal energy

In order to work out the difficult problem about the instability of energy storage converters, this paper proposes an approach of modifying the phase-locked loop (PLL) to improve

Microencapsulation is a viable technique to protect and retain the properties of phase change materials (PCMs) that are used in thermal energy storage (TES) applications. In this

In this study, a three-phase SECS is presented herein to ameliorate the PQ of the grid and to suppress the leakage current. In the state-of-the-art literature [ 14 ], the behaviours of the SECS in the presence of irregular/non-linear load and corresponding impacts are unaddressed.

Phase change materials (PCM) are deemed to be a great option for thermal energy storage (TES) with high energy density, but the low thermal conductivity of numerous PCM candidates, especially organic PCMs, has remained an issue of low power density. Over