Several types of researches have been conducted to produce the silica aerogels under ambient pressure [12,41] to decrease its production costs due to the high pressure (5-10 MPa) and high ...
Citation: XIAO Tong, LIU Qingyi, ZHANG Jiahao, et al. Recent advances in thermosetting resin-based composite phase change materials and enhanced phase change energy storage[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1311-1327. doi: 10.13801/j.cnki.fhclxb.20220527.001
This study presents a phase change energy storage CCHP system developed to improve the economic, environmental and energy performance of residential buildings in five climate zones in China. A full-load operation strategy is implemented considering that the existing operation strategy is susceptible to the mismatch of …
Latent heat energy storage is among the highly effective and dependable methods for lowering one''s energy usage. This method involves employing phase change materials (PCM) for storing and releasing heat energy. In contrast to sensible heat storage, latent heat thermal energy storage offers a greater energy storage capacity at a lower ...
PCMs play a decisive role in the process and efficiency of energy storage. An ideal PCM should be featured by high latent heat and thermal conductivity, a suitable phase change temperature, cyclic stability, etc. [33] As the field now stands, PCMs can be classified into organic, inorganic, and eutectic types shown in Fig. 1. ...
This review focuses on three key aspects of polymer utilization in phase change energy storage: (1) Polymers as direct thermal storage materials, serving as PCMs themselves; (2) strategies for the development of shape-stable PCMs based on polymers, including vacuum impregnation, direct blending, chemical grafting, …
By the combination of photothermal conversion and photothermal energy storage, the as-prepared solar steam evaporator achieves a high evaporation rate of 2.62 kg m −2 h −1 and excellent solar-to-vapor efficiency of 92.7% under 1 kW m −2 illumination.
Latent heat storage, also known as phase change heat storage, uses the phase change of PCMs to store large amounts of latent heat. Comparatively, PCMs are particularly attractive due to their high energy storage density and ability storing the latent heat enthalpy at a constant temperature, which is of great importance in those …
Among the many energy storage technology options, thermal energy storage (TES) is very promising as more than 90% of the world''s primary energy generation is consumed or wasted as heat. 2 TES entails storing energy as either sensible heat through heating of a suitable material, as latent heat in a phase change material (PCM), …
1. Introduction To address climate change and reach carbon neutrality by 2050, governments, institutions, and companies worldwide are implementing energy efficiency measures to phase out fossil fuels in electricity …
FT-IR, NMR, XPS, and XRD were conducted to verify the changes of the chemical structure at each of the steps. In the first step, the characteristic band of the carbonyl group at 1745 cm −1 appeared for all three materials, and the peak strength of the hydroxyl group at 3335 cm −1 significantly decreased, indicating that some of the …
Benefiting from high thermal storage density, wide temperature regulation range, operational simplicity, and economic feasibility, latent heat-based thermal energy storage (TES) is comparatively accepted as a cutting …
Phase-change materials (PCMs) are environmentally-friendly materials with the function of latent heat energy-storage. PCMs undergo phase transition over a narrow temperature range and it stores and releases a substantial amount of heat energy during the phase transition process ( Al-Yasiri and Szabo, 2022 ; Struhala and Ostrý, …
In addition, PCMs can be divided into liquid–gas, solid–gas, solid–liquid, and solid–solid PCMs based on the phase transition states. Solid–liquid PCMs are currently the most practical owing to their small volume change, high …
PCMs simultaneously change the phase from solid to liquid (energy absorbing) and liquid to solid (energy releasing). Therefore, a PCM should be thermally stable even after few cycles of operation. However, some researchers [23], [96], [113], [211] reported that most of the PCMs are thermally not stable after few cycles of operation.
Phase change materials (PCMs) have been considered suitable energy materials to address the mismatch between energy demand and supply to improve the utilization efficiency of the latent heat thermal energy storage (LHTES) system. However, the relatively low ...
Traditionally, water-ice phase change is commonly used for cold energy storage, which has the advantage of high energy storage density and low price [10]. However, owing to the low freezing point of water, the efficiency of the refrigeration cycle decreases significantly [ 11 ].
As shown in Figure 6, with the increase in heat storage temperature, the temperature hysteresis of phase change materials gradually decreases, and the phase change hysteresis degree declines. The phase change hysteresis decreases from 4.25 °C at 50 °C to 1.52 °C at. 80 °C.
Phase change materials (PCMs) for thermal energy storage have been intensively studied because it contributes to energy conservation and emission reduction for sustainable energy use. Recently, the issues on shape stability, thermal conductivity, and mechanical properties have been addressed and effective measures have been proposed to deal with …
Latent heat storage involves the heat absorbed or released when a material changes from one physical state to another (when it is submitted to a phase change) and the sensible heat according to Eq ...
According to the shape, it can be divided into phase change cold storage ball, phase change cold storage bag, and phase change cold storage plate, as shown in Fig. 4. Depending on the material, encapsulation can be categorized into metal, plastic, ceramic and so on.
Phase change energy storage materials are used in the building field, and the primary purpose is to save energy. Barreneche et al. ... Thereby effectively reducing the production cost. 4.4.3. Application in the field of construction Li et al. prepared paraffin/EG128]. ...