Abstract. In the process of industrial waste heat recovery, phase change heat storage technology has become one of the industry''s most popular heat recovery technologies due to its high heat storage density and almost constant temperature absorption/release process. In practical applications, heat recovery and utilization speed …
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Researchers are taking aim at heat-transfer rate enhancement of PCM in heat storage systems, attempting to explore these configurations and studying their roles in TES systems [29]. Hence, this paper reviews the recent progress of experimental studies, numerical approaches, and theoretical models of design and configuration of PCM …
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A comparison of heat transfer enhancement in a medium temperature thermal energy storage heat exchanger using fins Sol. Energy, 83 ( 2009 ), pp. 1509 - 1520, 10.1016/j.solener.2009.04.007 View PDF View article View in Scopus Google Scholar
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Based on the type of phase transformations involved in the heat transfer process, the LHES systems may be further categorized as solid-solid [[20], [21], [22]] and solid-liquid systems [[23], [24], [25]].However, the energy storage systems including solid-solid phase transformations are less desirable because of their lower latent heat values …
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Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy ( heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes.
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Thermochemical energy storage has substantial potential for greater density storage at temperatures over 200 °C. Heat transfer enhancement of materials and reactors is required. Heat transportation at less than 200 °C by latent heat storage has practical possibilities for waste heat utilization.
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Thermal energy storage (TES) system is the most eminent storage method that aids in the power generation. Latent heat storage (LHS) is on the rapid mark-up that fosters the TES with the utilization of the phase transition of a material to store the heat.
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It is noted that for each energy storage tank, the total input energy from left wall with φ = 1 is half of that with constant heat flux boundary condition at the same moment. When the amplification is raised to 2.0, the input energy at n t f ∗ ( n = 0, 1, 2 ⋅ ⋅ ⋅ ) is equal to that with constant heat flux boundary condition.
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This limits energy storage availability, hence there are many enhanced heat transfer techniques. The authors proposed new double-tube latent heat thermal energy storage units (M04, M05 and M06) that combine the features of different techniques to reduce PCM melting time and subsequently improving the energy storage availability.
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Then, they summarized heat transfer enhancement methods for indirect latent heat storage containers and systems. Li et al. [14] reviewed the numerical and experimental investigations on various augmentation techniques for both PCM side and heat transfer fluid (HTF) side of shell and tube TES systems using molten salt PCMs for …
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Fig. 1 illustrates shell-and-tube latent heat thermal energy storage (LHTES) units featuring various CDTs. In these units, water is utilized as the heat transfer fluid (HTF) and flows to the tubes from the top to the bottom, while PCM RT35 (paraffin with T m =307.15 K) is encapsulated in the shell side. The thermophysical properties of the …
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Many excellent reviews have been performed on TES, PCM and its heat transfer enhancement technologies. Zhang et al. [8] presented a comprehensive review on the development and practical aspects of TES, focusing on latent and thermo-chemical heat storages. Ibrahim et al. [9] presented a review on heat transfer and thermal conductivity …
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Salt hydrates are ideal for long-term thermochemical heat storage in a built environment, where K 2 CO 3 is considered a promising thermochemical heat storage material. This class of materials continues to encounter certain technical bottlenecks in practical applications, and the enhancement of heat and mass transfer is a key challenge.
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Coatings 2022, 13, 11 2 of 7 [9,10]. However, such a kind of manufacturing process costs too much, no matter the time or money, which is only suitable for laboratory exploration. With the fast development of the 3D-printing technique [11], various new solar
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As indicated earlier, latent heat storage based on PCMs is particularly attractive due to the high energy-storage density and the nearly isothermal environment of the energy storage process. However, most PCMs have inherently low thermal conductivities which weaken their thermal response by imposing too low …
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Moreover, convective-radiative heat transfer allocated 1.66% more heat reduction from the heat sink compared to the convective one. Their simulation demonstrated that a rise in height and number of the fins lead to decreasing the geometry temperature by 20% and 25%, respectively.
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1. Introduction. With traditional fossil fuels exhausted and greenhouse gas emission tightened up, clean renewable energy, for example, solar energy, is gaining extensive attention [1] addition, an enormous amount of high-grade waste heat in industry is directly discharged into the environment without any recovery, causing serious energy …
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Moving packed bed particle/supercritical carbon dioxide (SCO 2) heat exchanger (MPBE) is a critical equipment to integrate particle thermal energy storage …
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Global cold demand accounts for approximately 10-20% of total electricity consumption and is increasing at a rate of approximately 13% per year. It is expected that by the middle of the next century, the energy consumption of cold demand will exceed that of heat demand. Thermochemical energy storage using salt hydrates and phase change …
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Thermal energy storage can be accomplished either by using sensible heat storage or latent heat storage. Sensible heat storage has been used for centuries by builders to store/release passively thermal energy, but a much larger volume of material is required to store the same amount of energy in comparison to latent heat storage [11] .
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In their design, the heat was trapped in lower liquid zones and had no other choice by being transferred by conduction through the top solid regions. On the other hand, in the experiments ...
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In concentrating solar power systems, for instance, molten salt-based thermal storage systems already enable a 24/7 electricity generation. The use of liquid …
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The energy generated during the adsorption stage can be utilized in different fields. Adsorption heat, reaction energy, entropy change, enthalpy change, and exergy efficiency et al. are the values that need to be concerned. In the theoretical aspect, Meunier [51] studied the heat and entropy flows of a specific heat pump. ...
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The introduction of Graphene in 2004 has unlocked a new era in the field of science and technology [23].Graphene, a carbon formation composed of a single layer of sp 2-bonded carbon atoms, which densely packed into a hexagonal crystal lattice is considered as a rising star and has attracted considerable attention in various fields such …
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Sensible heat storage systems store energy by temperature variation, using high-temperature differences and materials with high specific heat transfer coefficients such as aquifer subsurface TES [7]. Latent heat thermal energy storage (LHTES) has excellent potential by employing phase change materials (PCM) with a high …
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This Special Issue focuses on the application of micro- and nanomaterials in different aspects to achieve heat transfer, energy storage and energy conversion applications and improve the utilization of solar energy. Wang et al. carried out extensive work related to a perfect solar absorber [ 1 ], which was based on both nanoparticles [ 2] …
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Heat transfer is the process of energy exchange between objects or systems due to their temperature difference. In this webpage, you will learn about the three mechanisms of heat transfer: conduction, convection, and radiation. You will also see some examples and applications of these mechanisms in everyday life and engineering. This webpage is part …
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More researches are needed to enhance the capability of the TES system by developing new heat storage materials, heat transfer fluids, modifying the design of …
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Bibliometric analysis of heat pumps and TES in current energy system • Scientific publications since 1969 obtained from Scopus database • Co-occurrence of keywords analysed through VOSviewer • Research trends and gaps identified. • Policy analysis …
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As a new type of heat transport medium with high efficiency and high heat transfer performance, nanofluids can effectively improve the heat transfer performance of thermal systems. In this paper, a lattice Boltzmann method is employed to propose a novel thermal storage system with optimised nanoparticle distribution using spacer-separated …
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Annual Review of Heat Transfer Vish Prasad (open in a new tab) Department of Mechanical Engineering, University of North Texas, Denton, Texas 76207, USA Yogesh Jaluria (open in a new tab) Department of Mechanical and Aerospace Engineering, Rutgers-New Brunswick, The State University of New Jersey, Piscataway, NJ 08854, USA
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Cost and volume savings are some of the advantages offered by the use of latent heat thermal energy storage (TES). Metallic phase change materials (PCMs) have high thermal conductivity, which relate to high charging and discharging rates in TES system, and can operate at temperatures exceeding 560 °C. In the study, a eutectic …
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