Abstract. High-temperature phase change materials (PCMs) have broad application prospects in areas such as power peak shaving, waste heat recycling, and solar thermal power generation. They address the need for clean energy and improved energy efficiency, which complies with the global "carbon peak" and "carbon neutral" strategy

In another experiment, Tian and Zhao [17] denotes that cascade latent energy storage with metal foams phase change materials works efficiently for the charging/discharging process, increases the utilization portion of PCM in the process, smooths the outlet temperature of the heat transfer fluid and reduces the melting time.

Under the condition of constant heated power of the satellite payload, the heat transfer characteristics of phase change energy storage heat exchanger are analyzed by numerical

Farid and Yacoub [6] developed a direct contact phase change energy storage unit between Kerosene (HTF) and salt hydrates (PCM). This eliminates the use of expensive heat exchange surfaces. Another novel configuration includes the use of three types of PCMs with different melting temperature [7] .

Experimental investigation of the novel melting point modified Phase–Change material for heat pump latent heat thermal energy storage application Energy, Volume 216, 2021, Article 119191 Xin Jin, , Alvin CK.

A PCM is typically defined as a material that stores energy through a phase change. In this study, they are classified as sensible heat storage, latent heat storage, and thermochemical storage materials based on their heat absorption forms (Fig. 1).Researchers

Phase change material (PCM)-based thermal energy storage significantly affects emerging applications, with recent advancements in enhancing heat capacity and cooling power. This perspective by Yang et al. discusses

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.

Review on sustainable thermal energy storage technologies, part I: heat storage materials and techniques. Energy Conversion and Management. 1998; 39 (11):1127-1138 15. Farid MM,

Thermal energy plays an indispensable role in the sustainable development of modern societies. Being a key component in various domestic and industrial processes as well as in power generation systems, the storage of thermal energy ensures system reliability, power dispatchability, and economic profitability

For such a spherical heat storage unit, numerical simulations were performed for two spherical erythritol-filled units having different diameters. 12 In the simulation, the external convection process of the sphere, heat conduction of the wall of the sphere, natural convection of the liquid phase inside the sphere, volume expansion of the

Latent heat thermal energy storage (LHTES) employing phase change materials (PCMs) provides impactful prospects for such a scheme, thus gaining tremendous attention from the scientific community. The primary goal of the current article is to provide a comprehensive state-of-the-art literature review on PCM-based TES for cooling

Phase change materials (PCMs) having a large latent heat during solid-liquid phase transition are promising for thermal energy storage applications. However,

11.1. Introduction. The large energy storage densities provided by phase change materials (PCMs) during their phase change, mostly isothermal, can be exploited to design and engineer energy-based systems. This large energy storage density can be used to achieve two related outcomes depending on the application: (1) store large

Recently, there has been a renewed interest in solid-to-liquid phase-change materials (PCMs) for thermal energy storage (TES) solutions in response to

As a key component of latent heat thermal energy storage system, heat exchangers that complete the energy storage process directly affect the operation efficiency of the system [11], [12], [13]. In order to improve the heat storage rate of the LHTES heat exchanger, scholars made extensive research on the structure of heat

Phase change material (PCM)-based thermal energy storage significantly affects emerging applications, with recent advancements in enhancing heat capacity and cooling power. This perspective by Yang et al. discusses PCM thermal energy storage progress, outlines research challenges and new opportunities, and proposes a roadmap for the research

Gürtürk and Kok [30] examined the phase change in a thermal energy storage system numerically and experimentally to investigate the effect of various fin surface areas. Test results revealed that the fin surface area positively affects the heat transfer, but it suppresses the natural convection effect.

Nomenclature PCM Phase Change Material TTHX Triplex-tube Heat Exchanger TES Thermal Energy Storage LHS Latent Heat Storage SHS Sensible Heat Storage HTF Heat Transfer Fluid G Latent Heat of fusion (kJ/kg) ρ Density (kg/m 3) C p Specific heat (J/kg K)

Thermal energy can be stored in the form of latent heat of phase transformation of certain materials commonly known as phase change materials (PCMs). In low-temperature applications such as domestic space and water heating, PCMs are often used which transform from solid phase to liquid phase (melting) during charging and from

Thermal energy storage is a key technology for decarbonization. In this context, phase change slurries (PCSs) retain the heat storage advantages of phase change materials (PCMs) while relying on fluidity to overcome heat transfer inefficiencies caused by the poor

Su et al. [98] used nanosilica hydrosol as a surfactant to prepare microcapsule phase change materials for building energy storage, which improved the heat storage efficiency of the wall. Cheng et al. [99] took octadecane as the core and coated it with acrylic acid-doped carbon nanotube shell material, and mixed it into the wall.

A helical coil phase change heat exchanger designed for thermal energy storage. • A prototype energy storage unit with paraffin wax was built and experimentally tested. • Charging time reduced by 35% when inlet HTF temperature increased from 70 to 75 C. •

The physical model of heat storage unit is shown in Fig. 1, which is connected by PCMs in different ways, namely the PCM series heat storage model (Fig. 1 a) and PCM parallel heat storage model (Fig. 1 b).Heat storage unit length l = 900 mm, outer diameter D w = 50 mm, HTF pipe diameter D 0 = 20 mm, and pipe wall thickness δ = 1 mm.

Numerical modeling for solid–liquid phase change phenomena in porous media: Shell-and-tube type latent heat thermal energy storage Appl. Energy, 112 ( 2013 ), pp. 1222 - 1232, 10.1016/j.apenergy.2013.02.022

Latent heat thermal energy storage in metallic phase change materials offers a thermal energy storage concept that can store energy at higher temperatures than with sensible thermal energy storage. This may enable the use of high efficiency thermodynamic cycles in CSP applications, which may lead to a reduction in levelised

Numerically, Elbahjaoui and Qarnia [37] investigated the rectangular LHTES ( Figure 11) integrated with solar collectors and observed the outlet water temperature in the range of 43.6-24 C, 51.7

A PCM, when absorbing heat, first undergoes sensible heat storage until its fusion temperature, where further heat absorbed is used as latent heat towards the phase change. Due to the precise control these substances can afford along with a passive operation, an increasing number of effective applications for PCMs are being investigated

Abstract. Given that the performance of the phase change thermal storage device (PCTSD) is limited by the low thermal conductivity of the phase change material, more effective heat transfer structures should be developed to improve the thermal storage rate. In this paper, a novel micro heat pipe array (MHPA)–PCTSD with a highly

Phase change materials (PCMs) utilized for thermal energy storage applications are verified to be a promising technology due to their larger benefits over

This paper describes a scale model test of a 0.2 m diameter and 1.5 m long concrete phase-change energy storage pile. The pile was buried in saturated sand in a 2.45 m×2.45 m×2 m box. The heat transfer fluid temperature was kept constant by a temperature controller. The three tests used flow rates of 0.15, 0.30 and 0.45 m 3 /h.

A shell-and-tube phase change energy storage heat exchanger was designed in order to study the paraffin phase change process in the heat storage tank under different levels of energy input. The three-dimensional simulation model is established through SolidWorks, and the schematic diagram of the structure is shown in Fig. 6 .

According to the MATLAB program written in this study, the heat storage process of the cascaded phase change heat storage tank shown in Fig. 2 (a) is numerically simulated and calculated. The single-phase change heat storage process is

During phase change cold energy storage, the solidified phase change material (PCM) increases the thermal resistance, which makes the charging rate decay continuously [7]. The method of making direct contact between heat transfer fluid (HTF) and PCM can theoretically solve this problem [8] .

Phase change material thermal energy storage is a potent solution for energy savings in air conditioning applications. Wherefore thermal comfort is an essential aspect of the human life, air conditioning energy usages have soared significantly due to extreme climates, population growth and rising of living standards.

The energy efficiency ratio of heat storage in one shell-and-one tube phase change thermal energy storage unit Appl. Energy, 138 ( 2015 ), pp. 169 - 182 View PDF View article View in Scopus Google Scholar

The most optimal PCMs for efficiently heating water are myristic acid, palmitic acid, and stearic acid, which possess a high heat retention capacity for an extended duration. Paraffin wax is one

Thermal energy stored in PCMs, Q (J), in a certain temperature range from T i to T f comprises sensible heat from the increase in temperature and latent heat from the phase change process (). In a narrow range of temperatures near the melting point (green area, Fig. 2 ), the TES capacity of PCMs is much higher than that of SHS.

This Review provides a review of enhanced heat transfer in phase change thermal storage devices from two aspects: internal structure enhanced heat transfer and heat exchange

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.

This Review provides a review of enhanced heat transfer in phase change thermal storage devices from two aspects: internal structure enhanced heat transfer and

Phase change materials had been used in low temperature thermal energy storage for residential heating and industrial heat exchanger units [4]. Heat exchanger can be defined as any device that transferred heat between two fluids.