Phase change materials (PCMs) are ideal carriers for clean energy conversion and storage due to their high thermal energy storage capacity and low cost. During the phase transition process, PCMs are able to store thermal energy in the form of latent heat, which is more efficient and steadier compared to other types of heat storage

Abstract. In view of the low heat transfer efficiency of the phase-change heat storage device and the inability to quickly respond to temperature changes, the fluid tube structure in the heat storage device was optimized, and four types of structures: circular structure, square structure, regular hexagon structure and regular triangle

Considering that improving the energy efficiency of buildings is crucial to achieving China''s carbon neutrality goal, the application of phase-change energy-storage (PCES) technology could be considered a practical and feasible approach. Currently, the heat transfer characteristics of PCES walls and their influence mechanisms on the indoor

The materials used for the preparation were purchased from Shenzhen Runyou Chemical Co., Ltd. The phase-change temperature and enthalpy of CA and PA during melting and solidification are shown in Table 1.The setting time, compressive strength and thermal conductivity of de-sulfurized gypsum are shown in Table 2 this study, the

To prepare Phase Change Energy Storage Permeable Concrete (PCESPC) with excellent thermodynamic performance, it is necessary to determine the optimal volume fraction of Microencapsulated Phase Change Material (MPCM), volume fraction of Carbon Nanotubes (CNTs), and Water-Binder ratio (W/B). However, due to

This paper mainly studies the application progress of phase change energy storage technology in new energy, discusses the problems that still need to be

1. Introduction Phase change materials (PCMs) are attracting attention for thermal energy storage based on charging and discharging of latent heat via a reversible phase transition, and have the potential to alleviate energy shortage and environmental concerns, 1–6 and their applications in storing solar energy and harnessing waste heat

As described by [5], the experimental arrangement implements the capability of a phase change composite-thermal energy storage (PCC-TES) to store and release thermal energy by exchanging heat with ethylene glycol (EG) stream. The PCC-TES system consists of 28 slabs of the proposed novel phase change composite (PCC),

change material to construct a phase change heat storage structure with a strong energy storage performance. This structure allows the regulation of the room temperatures inside the building.14−18 A series of studies have been performed by scholars at home and abroad on the phase change energy storage building envelope. For example,

The textiles are made up of a large number of multicores-sheath structured phase change energy storage nanofibers with the diameter of 700–2000 nm, inwhich the multicores regions and the sheath layers are respectively composed of quantities of room-temperature phase change nanoparticulates (40–60 nm) and the in-situ UV irradiated

This paper reviews previous work on latent heat storage and provides an insight to recent efforts to develop new classes of phase change materials (PCMs) for use in energy storage. Three aspects have been the focus of this review: PCM materials, encapsulation and applications. There are large numbers of phase change materials

The development of materials that reversibly store high densities of thermal energy is critical to the more efficient and sustainable utilization of energy. Herein, we investigate metal–organic compounds as a new class of solid–liquid phase-change materials (PCMs) for thermal energy storage. Specifically, we show that isostructural series of divalent

This paper reviews previous work on latent heat storage and provides an insight to recent efforts to develop new classes of phase change materials (PCMs) for

This work proposes a fin-stone hybrid structure integrating fins (popular thermal enhancers) and natural stones (widely used sensible heat storage media) to enhance the heat transfer of phase change materials for on-site thermal energy storage applications, with advantages of low cost, environmental friendliness, and easy

Phase change material (PCM)-based thermal energy storage significantly affects emerging applications, with recent advancements in enhancing

Combining the phase change thermal storage unit with the condensing side of the air-source heat pump, and the condensing heat is recovered by using the phase change thermal storage unit. The heat is stored during the day and supplied at night, avoiding the need for the air-source heat pump to operate at low temperatures.

In terms of system structure, the phase change energy storage CCHP system is proposed for the first time as per the following steps: (i) system modeling: Based on the Energy-flow method, a mathematical model is developed for the main components of the system, and the optimization objective function of this phase change energy

Phase change energy storage materials are used in the building field, and the primary purpose is to save energy. The porous structure of composite phase change materials with these materials as skeletons can effectively prevent the leakage of inorganic salts by virtue of their capillary forces and surface tension. In addition, such

Wang et al. [37] designed a bionic alveolar structure thermal storage unit in PBTES, achieving a 9.8% improvement in liquid fraction and 6.4%, respectively, compared to the conventional model. Additionally, Rate capability and Ragone plots for phase change thermal energy storage. Nat Energy, 6 (2021), pp. 295-302,

The best-shaped phase change energy storage material was prepared when the content of SiC nanowires added reached 3 mass%. By scanning electron

As one of the important directions of solar energy utilization, the construction of composite photothermal phase change materials (PCM) with reasonable network support and low leakage in the simple method is important to solve the transient availability of solar energy and achieve long-lasting energy output.

Carbon fiber with thermal conductivity of 220 W/(m•K) was added to the paraffin phase change energy storage system to blend with paraffin, The results show that the activated carbon is easy to form a "sea-island" structure with the phase change material, which makes the heat transfer discontinuous, while the expanded graphite

Our results illustrate how geometry, material properties and operating conditions all contribute to the energy and power trade-off of a phase change thermal

Phase-change composites show high-energy storage capacity, and it is essential to prepare high-quality carbonaceous materials with large surface areas and morphologies. The encapsulation of PCMs and carbon materials upgraded the thermal and physicochemical properties but inescapably reduced the total thermal energy storage

The research on phase change materials (PCMs) for thermal energy storage systems has been gaining momentum in a quest to identify better materials with

Phase change materials (PCMs) as latent heat energy storage and release media for effective thermal management, which are widely applied in energy fields and attracted more and more attention [] organic solid–liquid PCMs, such as Na 2 CO 3 ·10H 2 O, CaCl 2 ·6H 2 O or Na 2 SO 4 ·10H 2 O, store and release latent heat energy

Changing the geometric structures or properties of phase change material don''t affect a lot on the response behavior. The characteristics of the phase change energy storage unit in temperature and liquid phase fraction exhibit fluctuations similarity to those of the input heat source, but with a slight delay in time.

Thermal energy storage (TES) using PCMs (phase change materials) provide a new direction to renewable energy harvesting technologies, particularly, for the continuous operation of the solar-biomass thermal energy systems. The FT-IR analysis revealed that there was no change in the chemical structure after thermal cycles and

The performance of thermal energy storage systems with Ca(NO3)2•4H2O (reviated as CaNT) as a phase change material is limited by its complex thermal properties and relatively large degree of

Phase change thermal energy storage materials can be inorganic or organic. Inorganic PCMs have greater heat of fusion than that of organic PCMs. The preparation, structure and thermal energy storage property of capric–palmitic acid/attapulgite form-stable PCM are presented in this study. The following conclusions

Thermal energy storage devices are vital for reducing the inconsistency between energy supply and demand as well as for enhancing the performance of solar thermal systems. The present study investigates the melting process in metallic honeycombed heat exchangers filled with n-octadacane as phase change material (PCM).

Phase change materials (PCMs) are ideal carriers for clean energy conversion and storage due to their high thermal energy storage capacity and low cost.