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Journal articles on the topic 'LHTES SYSTEM'

Author: Grafiati

Published: 11 September 2023

Last updated: 31 July 2025

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1

Oni, Taiwo O., Jacob B. Awopetu, Samson A. Adeleye, Daniel C. Uguru-Okorie, Anthony A. Adeyanju, and Niyi E. Olukayode. "Development of a Latent Heat Thermal Energy Storage Material-Based Refrigeration System." International Journal of Heat and Technology 39, no. 2 (2021): 469–76. http://dx.doi.org/10.18280/ijht.390216.

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The present research focuses on application of thermal energy storage on a convectional refrigerator to enhance its performance. Salt hydrate was used as latent heat thermal energy storage (LHTES) material to convert the convectional refrigerator to a LHTES material-based refrigerator. The cabinet of the convectional refrigerator was loaded with 10 kg of water at a temperature of 28℃ and experiments were conducted on it to know the time taken for the evaporator temperature (TE) to reach -5℃, and determine the performance characteristics of the convectional refrigerator. The experiments were re

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2

Yanbing, Kang, Zhang Yinping, Jiang Yi, and Zhu Yingxin. "A General Model for Analyzing the Thermal Characteristics of a Class of Latent Heat Thermal Energy Storage Systems." Journal of Solar Energy Engineering 121, no. 4 (1999): 185–93. http://dx.doi.org/10.1115/1.2888165.

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The present study describes and classifies latent heat thermal energy storage (LHTES) systems according to their structural characteristics. A general model is developed for analyzing the thermal characteristics of the various typical LHTES systems to simulate thermal characteristics such as instantaneous heat transfer rate, instantaneous thermal storage capacity, etc. of the various typical LHTES systems. The model can calculate some important but difficult to measure system parameters for monitoring the charging or discharging processes of the systems. The model is verified using experimenta

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3

Paroutoglou, Evdoxia, Peter Fojan, Leonid Gurevich, et al. "A Numerical Parametric Study of a Double-Pipe LHTES Unit with PCM Encapsulated in the Annular Space." Sustainability 14, no. 20 (2022): 13317. http://dx.doi.org/10.3390/su142013317.

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Latent heat thermal energy storage (LHTES) with Phase Change Materials (PCM) represents an interesting option for Thermal Energy Storage (TES) applications in a wide temperature range. A tubular encapsulation model of an LHTES with PCM was developed, and the calculated data were analyzed. In addition, a parametric analysis for the preferable system geometry is presented. Organic paraffin RT18 with a melting point of 18 °C was utilized as PCM for different geometries of LHTES, and the addition of internal and external fins and their influence on LHTES thermal conductivity was investigated. One-

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4

Chocontá Bernal, Daniel, Edmundo Muñoz, Giovanni Manente, Adriano Sciacovelli, Hossein Ameli, and Alejandro Gallego-Schmid. "Environmental Assessment of Latent Heat Thermal Energy Storage Technology System with Phase Change Material for Domestic Heating Applications." Sustainability 13, no. 20 (2021): 11265. http://dx.doi.org/10.3390/su132011265.

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The emissions generated by the space and water heating of UK homes need to be reduced to meet the goal of becoming carbon neutral by 2050. The combination of solar (S) collectors with latent heat thermal energy storage (LHTES) technologies with phase change materials (PCM) can potentially help to achieve this goal. However, there is limited understanding of the environmental sustainability of LHTES technologies from a full life cycle perspective. This study assesses for the first time 18 environmental impacts of a full S-LHTES-PCM system from a cradle to grave perspective and compares the resu

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Chocontá Bernal, Daniel, Edmundo Muñoz, Giovanni Manente, Adriano Sciacovelli, Hossein Ameli, and Alejandro Gallego-Schmid. "Environmental Assessment of Latent Heat Thermal Energy Storage Technology System with Phase Change Material for Domestic Heating Applications." Sustainability 13, no. 20 (2021): 11265. http://dx.doi.org/10.3390/su132011265.

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The emissions generated by the space and water heating of UK homes need to be reduced to meet the goal of becoming carbon neutral by 2050. The combination of solar (S) collectors with latent heat thermal energy storage (LHTES) technologies with phase change materials (PCM) can potentially help to achieve this goal. However, there is limited understanding of the environmental sustainability of LHTES technologies from a full life cycle perspective. This study assesses for the first time 18 environmental impacts of a full S-LHTES-PCM system from a cradle to grave perspective and compares the resu

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6

Modi, Nishant, Xiaolin Wang, and Michael Negnevitsky. "Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges." Energies 16, no. 4 (2023): 1969. http://dx.doi.org/10.3390/en16041969.

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Domestic water heating accounts for 15% to 27% of the total energy consumption in buildings in Australia. Over the past two decades, the latent heat thermal energy storage (LHTES) system has been widely investigated as a way to reduce fossil fuel consumption and increase the share of renewable energy in solar water heating. However, the research has concentrated on the geometric optimisation of the LHTES heat exchanger for the past few years, and this might not be sufficient for commercialisation. Moreover, recent review papers mainly discussed the development of a particular heat-transfer imp

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7

Zhang, Renping, and Zuxiang Zhou. "Research and optimization of heat transfer characteristics of heat pipe-coupled phase change energy storage system." Journal of Physics: Conference Series 2838, no. 1 (2024): 012032. http://dx.doi.org/10.1088/1742-6596/2838/1/012032.

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Abstract Heat pipe coupled Latent Heat Thermal Energy Storage (LHTES) is a commonly used technique for improving heat storage, due to its advantages such as heat conduction, isothermal, and uniform temperature. Adding fins to the heat pipe can enhance energy storage efficiency and system performance. Although previous research has looked into how heat pipe layouts affect LHTES, there is still a dearth of research on fin geometry optimization for boosted heat transfer. In this work, we used ANSYS Fluent to simulate the consequence of fin placement upon the heating capacity of a Phase Change Mat

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8

Boujelbene, Mohamed, Amira M. Hussin, Seyed Abdollah Mansouri Mehryan, and Mohsen Sharifpur. "The Effect of Different Configurations of Copper Structures on the Melting Flow in a Latent Heat Thermal Energy Semi-Cylindrical Unit." Mathematics 11, no. 20 (2023): 4279. http://dx.doi.org/10.3390/math11204279.

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Utilizing latent heat thermal energy storage (LHTES) units shows promise as a potential solution for bridging the gap between energy supply and demand. While an LHTES unit benefits from the latent heat of the high-capacity phase change material (PCM) and experiences only minor temperature variations, the low thermal conductivity of PCMs hinders the rapid adoption of LHTES units by the market. In this regard, the current work aims to investigate the thermal behavior of a semi-cylindrical LHTES unit with various copper fin configurations (including horizontal, inclined, and vertical fins) on the

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9

Zhang, Yinping, Yan Su, Yingxin Zhu, and Xianxu Hu. "A General Model for Analyzing the Thermal Performance of the Heat Charging and Discharging Processes of Latent Heat Thermal Energy Storage Systems*." Journal of Solar Energy Engineering 123, no. 3 (2001): 232–36. http://dx.doi.org/10.1115/1.1374206.

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During melting of phase change materials (PCM) encapsulated in a container, the solid PCM sinks to the bottom or floats to the top of the container according to the gravitational force and buoyancy resulting from the difference between solid and liquid densities. Compared with the solidification process, the melting process has a quite different behavior. Although the heat transfer characteristics of melting processes in various typical kinds of containers have been studied, the general model for analyzing the thermal performance of both melting and solidification processes of latent heat ther

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10

Shank, Kyle, Jessica Bernat, Ethan Regal, Joel Leise, Xiaoxu Ji, and Saeed Tiari. "Experimental Study of Varying Heat Transfer Fluid Parameters within a Latent Heat Thermal Energy Storage System Enhanced by Fins." Sustainability 14, no. 14 (2022): 8920. http://dx.doi.org/10.3390/su14148920.

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Latent heat thermal energy storage (LHTES) systems can be used to combat the limited collection and long-term storage of renewable energy sources. The key component of an LHTES system is its phase change material (PCM), which thermally stores energy. Despite extensive research on thermal conductivity enhancement within PCM, little attention has been paid to the heat transfer fluid (HTF) within the system. This study aimed to observe the impact of variable HTF flow rates and temperatures on the speed of charging and discharging an LHTES system enhanced with annular fins. Two copper fin configur

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11

Aljumaily, Abdulrazzaq M. Saleh, Alaa AM Hayes Al-Jubouri, and Nour FH Al-Jubouri. "Improving the Thermal Storage System (LHTES): A theoretical and experimental study." International Journal of Mechanical and Thermal Engineering 5, no. 1 (2024): 41–55. http://dx.doi.org/10.22271/27078043.2024.v5.i1a.56.

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12

Dugué, Antoine, Saed Raji, Paul Bonnamy, and Denis Bruneau. "E2VENT: An Energy Efficient Ventilated Façade Retrofitting System. Presentation of the Embedded LHTES System." Procedia Environmental Sciences 38 (2017): 121–29. http://dx.doi.org/10.1016/j.proenv.2017.03.093.

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13

Pop, Octavian G., Lucian Fechete Tutunaru, Florin Bode, and Mugur C. Balan. "Preliminary investigation of thermal behaviour of PCM based latent heat thermal energy storage." E3S Web of Conferences 32 (2018): 01017. http://dx.doi.org/10.1051/e3sconf/20183201017.

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Solid-liquid phase change is used to accumulate and release cold in latent heat thermal energy storage (LHTES) in order to reduce energy consumption of air cooling system in buildings. The storing capacity of the LHTES depends greatly on the exterior air temperatures during the summer nights. One approach in intensifying heat transfer is by increasing the air’s velocity. A LHTES was designed to be integrated in the air cooling system of a building located in Bucharest, during the month of July. This study presents a numerical investigation concerning the impact of air inlet temperatures and ai

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14

MacPhee, David W., and Mustafa Erguvan. "Thermodynamic Analysis of a High-Temperature Latent Heat Thermal Energy Storage System." Energies 13, no. 24 (2020): 6634. http://dx.doi.org/10.3390/en13246634.

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Thermal energy storage (TES) technologies are becoming vitally important due to intermittency of renewable energy sources in solar applications. Since high energy density is an important parameter in TES systems, latent heat thermal energy storage (LHTES) system is a common way to store thermal energy. Though there are a great number of experimental studies in the field of LHTES systems, utilizing computational codes can yield relatively quick analyses with relatively small expense. In this study, a numerical investigation of a LHTES system has been studied using ANSYS FLUENT. Results are vali

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15

Paroutoglou, Evdoxia, Alireza Afshari, Niels Chr Bergsøe, Peter Fojan, and Göran Hultmark. "A PCM based cooling system for office buildings: a state of the art review." E3S Web of Conferences 111 (2019): 01026. http://dx.doi.org/10.1051/e3sconf/201911101026.

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Cooling of air in buildings has a significant effect on thermal comfort and, consequently, productivity of office occupants. This study presents a state of the art review of energy efficient cooling systems that will provide occupants in buildings with satisfying thermal comfort. Using high-temperature cooling systems combined with renewable energy sources increases the energy efficiency in buildings. Latent heat thermal energy storage (LHTES) using Phase Change Materials (PCM) is a renewable energy source implemented in space cooling applications due to its high energy storage density. Since

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16

Migla, Lana, Raimonds Bogdanovics, and Kristina Lebedeva. "Performance Improvement of a Solar-Assisted Absorption Cooling System Integrated with Latent Heat Thermal Energy Storage." Energies 16, no. 14 (2023): 5307. http://dx.doi.org/10.3390/en16145307.

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Phase change materials (PCMs) have emerged as promising solutions for latent heat thermal energy storage (LHTES) systems, offering considerable potential for storing energy derived from renewable sources across various engineering applications. The present study focused on optimization of solar cooling system by integrating LHTES with different PCM tank configurations. TRNSYS simulation software was selected for the study, and the collected experimental data from laboratory system prototype were used for system validation. The results indicate that the use of PCM led to a noteworthy decrease o

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17

Shank, Kyle, and Saeed Tiari. "A Review on Active Heat Transfer Enhancement Techniques within Latent Heat Thermal Energy Storage Systems." Energies 16, no. 10 (2023): 4165. http://dx.doi.org/10.3390/en16104165.

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Renewable energy resources require energy storage techniques to curb problems with intermittency. One potential solution is the use of phase change materials (PCMs) in latent heat thermal energy storage (LHTES) systems. Despite the high energy storage density of PCMs, their thermal response rate is restricted by low thermal conductivity. The topic of heat transfer enhancement techniques for increasing thermal performance of LHTES systems has mainly focused on passive heat transfer enhancement techniques with less attention towards active methods. Active heat transfer enhancement techniques req

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18

Yusup, Rifki, and Byan Wahyu Riyandwita. "Effects of Flow Rate and Inlet Temperature on Performance of Annulus Type Low-Temperature Latent Heat Thermal Energy Storages." Journal of Emerging Supply Chain, Clean Energy, and Process Engineering 1, no. 1 (2022): 41–54. http://dx.doi.org/10.57102/jescee.v1i1.10.

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Solar energy is one of the largest energy potentials that Indonesia has, which can be utilized in solar heater that are integrated with latent heat energy storage (LHTES). This research aims to investigate the effects of the operating conditions of flow rate and inlet temperature on the performance of the annulus type Low-Temperature LHTES using Computational fluid dynamics method in which the enthalpy-porosity is used as the solidification model. The results indicate that the increase of performance can be obtained by increasing the flow rate and inlet temperature. The increase in flow rate w

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19

HOSHI, Akira, Takeo S. SAITOH, and David R. Mills. "Application of High-Temperature Latent Heat Thermal Energy Storage (LHTES) System to Solar Thermal Electricity Systems." Proceedings of The Computational Mechanics Conference 2004.17 (2004): 649–50. http://dx.doi.org/10.1299/jsmecmd.2004.17.649.

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20

Tola, Vittorio, Simone Arena, Mario Cascetta, and Giorgio Cau. "Numerical Investigation on a Packed-Bed LHTES System Integrated into a Micro Electrical and Thermal Grid." Energies 13, no. 8 (2020): 2018. http://dx.doi.org/10.3390/en13082018.

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Currently, energy storage systems are considered a key solution when mismatch occurs between energy supply and demand, allowing a more efficient energy deployment and use. The present paper is focused on the study of a latent heat thermal energy storage (LHTES) system based on a packed bed of encapsulated phase change material (PCM) of spherical shape, conceived as an auxiliary component of a micro-grid to be built in a Research Center located in southwestern Sardinia (Italy). The main purpose of this work was to perform numerical simulations for predicting the performance of the TES system, d

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21

El Mhamdi, Oussama, Soumia Addakiri, ElAlami Semma, and Mustapha El Alami. "Study of A Thermal Energy Storage System Using the Lattice Boltzmann Method." E3S Web of Conferences 321 (2021): 04003. http://dx.doi.org/10.1051/e3sconf/202132104003.

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Thermal energy storage (TES) systems are much preferred in many engineering applications, which have the ability to overcome the mismatch between energy supply and energy demand. TES can be used to store thermo-chemical, sensible, or latent heat or a combination of these. Among the three forms, latent heat thermal energy storage (LHTES) has grown considerably in importance over recent years as a promising alternative to traditional systems. These systems use phase change materials (PCM), in simple or cascade configuration, and store the latent heat of melting (charging process) and release it

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22

Yang, Jialin, Zhenlan Dou, Pengxiang Zhao, et al. "Numerical studies on storage process of phase change material with metal foam for prefabricated cabin energy system." Journal of Physics: Conference Series 2474, no. 1 (2023): 012084. http://dx.doi.org/10.1088/1742-6596/2474/1/012084.

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Abstract Latent heat thermal energy storage (LHTES) is a promising technology in prefabricated cabin energy system. This paper proposed a new thermal energy storage (TES) system with phase-change material (PCM) embedded in metal foam and heating source is steam or hot water. The mathematical formulas and numerical models of representative units are studied. The effect of natural convection is considered in the simulation of melting process. Finite volume method is used to discretize the governing equation The Forchheimer-Darcy law is used to model the porous resistance and a local thermal equi

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23

Hyun, Su Woong, and Dong Ho Shin. "Development of snow-melting system utilizing LHTES for black-ice and snow removal on roads." Journal of Energy Storage 102 (November 2024): 114202. http://dx.doi.org/10.1016/j.est.2024.114202.

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Metin, Cagri, Servet Giray Hacipasaoglu, Ersin Alptekin, and Mehmet Akif Ezan. "Implementation of enhanced thermal conductivity approach to an LHTES system with in‐line spherical capsules." Energy Storage 1, no. 1 (2019): e39. http://dx.doi.org/10.1002/est2.39.

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Antony Aroul Raj, V., C. Hariharan, R. Velraj, and R. V. Seeniraj. "Numerical Investigations of Outward Solidification in Cylindrical PCM Storage Unit." Applied Mechanics and Materials 787 (August 2015): 177–81. http://dx.doi.org/10.4028/www.scientific.net/amm.787.177.

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In the present work a transient numerical model is developed to investigate and predict the performance of a paraffin phase change material (PCM) in the annular portion of the cylindrical container during its solidification and melting processes. Enthalpy method of modeling is adopted and the discretised non-dimensional form of governing equations and boundary conditions are solved by implicit finite difference method by using MATLAB software. The temperature variation of PCM along two axes of the polar co-ordinates (r, z) and the time required for solidification are analyzed and presented. Th

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26

Ma, Fei, Tianji Zhu, Yalin Zhang, Xinli Lu, Wei Zhang, and Feng Ma. "A Review on Heat Transfer Enhancement of Phase Change Materials Using Fin Tubes." Energies 16, no. 1 (2023): 545. http://dx.doi.org/10.3390/en16010545.

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Latent heat thermal energy storage (LHTES) has received more and more attention in the thermal energy storage field due to the large heat storage density and nearly constant temperature during phase change process. However, the low thermal conductivity of phase change material (PCM) leads to poor performance of the LHTES system. In this paper, the research about heat transfer enhancement of PCM using fin tubes is summarized. Different kinds of fins, such as rectangular fin, annular fin, spiral fin, etc., are discussed and compared based on the shape of the fins. It is found that the longitudin

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27

Ning, Tao, Xinyu Huang, Junwei Su, and Xiaohu Yang. "Design and Research of Heat Storage Enhancement by Innovative Wave Fin in a Hot Water–Oil-Displacement System." Sustainability 15, no. 22 (2023): 15785. http://dx.doi.org/10.3390/su152215785.

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Energy storage technology provides a new direction for the utilization of renewable and sustainability energy. The objective of this study is to introduce a novel, wavy, longitudinal fin design, which aims to improve heat transfer in the melting process of a Latent Heat Thermal Energy Storage (LHTES) unit. The main goal is to mitigate the negative effects caused by the refractory zone at the end of the melting phase. A two-dimensional numerical model of LHTES unit is established by using the enthalpy porosity method and verified by experimental data. Through the quantitative comparison between

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Wang, Peilun, Pengxiang Song, Yun Huang, Zhijian Peng, and Yulong Ding. "Numerical Simulation of the Heat Transfer Behavior of a Zigzag Plate Containing a Phase Change Material for Combustion Heat Recovery and Power Generation." Journal of Combustion 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/3092508.

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This study presents a numerical analysis of the melting process of phase change materials (PCMs) within a latent heat thermal energy storage (LHTES) system employing zigzag plate. The numerical model used NaCl-MgCl2 mixture as PCMs and hot air as heat transfer fluid (HTF). An experimental system was built to validate the model, and the experimental data agrees reasonably well with the simulation results. The simulation results revealed the effects of the Reynolds and Stefan numbers and the surface topography of the zigzag plate on the charging process. Besides, the effect of the relationship b

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Pise, A. T., A. V. Waghmare, and V. G. Talandage. "Heat Transfer Enhancement by Using Nanomaterial in Phase Change Material for Latent Heat Thermal Energy Storage System." Asian Journal of Engineering and Applied Technology 2, no. 2 (2013): 52–57. http://dx.doi.org/10.51983/ajeat-2013.2.2.667.

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Latent heat energy storage systems using paraffin wax could have lower heat transfer rates during melting / freezing processes due to its inherent low thermal conductivity. The thermal conductivity of paraffin wax can be enhanced by employing high conductivity materials such as alumina (Al2O3) nanopowder. In this paper the experimental investigation has been carried out to study the performance enhancement of paraffin wax with nanoalumina (Al2O3) particles in mass fraction of 1, 3, and 5% in a Latent Heat Thermal Energy Storage (LHTES) System at constant flow rate and variable temperature of h

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Col, Amandine Da, Fabrice Bentivoglio, and Benoit Stutz. "1D modelling of a latent heat thermal energy storage prototype using boiling water as heat transfer fluid." Journal of Physics: Conference Series 2766, no. 1 (2024): 012224. http://dx.doi.org/10.1088/1742-6596/2766/1/012224.

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Abstract This paper presents a numerical model to simulate the thermohydraulic behaviour of a shell-and-tubes Latent Heat Thermal Energy Storage (LHTES) during discharging period, involving a boiling heat transfer fluid (HTF). It is based on a 1D homogeneous approach for the HTF (water) and a 1.5D approach for the phase-change material (sodium nitrate) allowing calculation times significantly shorter than those of CFD. This approach has been validated with experimental data in a previous study for a LHTES with a monophasic HTF. The two highlights of this paper are as follows: On the one hand,

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31

Singh, Dileep, Taeil Kim, Weihuan Zhao, Wenhua Yu, and David M. France. "Development of graphite foam infiltrated with MgCl2 for a latent heat based thermal energy storage (LHTES) system." Renewable Energy 94 (August 2016): 660–67. http://dx.doi.org/10.1016/j.renene.2016.03.090.

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Zhai, Xue, Shilei Lu, Zijian He, Wenze Wu, Hui Zhang, and Wei Feng. "Analysis of geo-temperature recovery performance under load redistribution operating strategy of GSHP coupled LHTES device system." Energy Conversion and Management 308 (May 2024): 118402. http://dx.doi.org/10.1016/j.enconman.2024.118402.

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Algarni, Mohammed, Mashhour A. Alazwari, and Mohammad Reza Safaei. "Optimization of Nano-Additive Characteristics to Improve the Efficiency of a Shell and Tube Thermal Energy Storage System Using a Hybrid Procedure: DOE, ANN, MCDM, MOO, and CFD Modeling." Mathematics 9, no. 24 (2021): 3235. http://dx.doi.org/10.3390/math9243235.

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Using nano-enhanced phase change material (NePCM) rather than pure PCM significantly affects the melting/solidification duration and the stored energy, which are two critical design parameters for latent heat thermal energy storage (LHTES) systems. The present article employs a hybrid procedure based on the design of experiments (DOE), computational fluid dynamics (CFD), artificial neural networks (ANNs), multi-objective optimization (MOO), and multi-criteria decision making (MCDM) to optimize the properties of nano-additives dispersed in a shell and tube LHTES system containing paraffin wax a

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Koukou, Maria K., Michail Gr Vrachopoulos, George Dogkas, et al. "Testing the performance of a prototype thermal energy storage tank working with organic phase change material for space heating application conditions." E3S Web of Conferences 116 (2019): 00038. http://dx.doi.org/10.1051/e3sconf/201911600038.

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A prototype Latent Heat Thermal Energy Storage (LHTES) unit has been designed, constructed, and experimentally analysed for its thermal storage performance under different operational conditions considering heating application and exploiting solar and geothermal energy. The system consists of a rectangular tank filled with Phase Change Material (PCM) and a finned tube staggered Heat Exchanger (HE) while water is used as Heat Transfer Fluid (HTF). Different HTF inlet temperatures and flow rates were tested to find out their effects on LHTES performance. Thermal quantities such as HTF outlet tem

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35

Soudian, Shahrzad, and Umberto Berardi. "Assessing the effect of night ventilation on PCM performance in high-rise residential buildings." Journal of Building Physics 43, no. 3 (2019): 229–49. http://dx.doi.org/10.1177/1744259119848128.

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This article investigates the possibility to enhance the use of latent heat thermal energy storage (LHTES) as an energy retrofit measure by night ventilation strategies. For this scope, phase change materials (PCMs) are integrated into wall and ceiling surfaces of high-rise residential buildings with highly glazed facades that experience high indoor diurnal temperatures. In particular, this article investigates the effect of night ventilation on the performance of the PCMs, namely, the daily discharge of the thermal energy stored by PCMs. Following previous experimental tests that have shown t

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36

Ghalambaz, Mohammad, Hassan Shirivand, Kasra Ayoubi Ayoubloo, et al. "The Thermal Charging Performance of Finned Conical Thermal Storage System Filled with Nano-Enhanced Phase Change Material." Molecules 26, no. 6 (2021): 1605. http://dx.doi.org/10.3390/molecules26061605.

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A latent heat thermal energy storage (LHTES) unit can store a notable amount of heat in a compact volume. However, the charging time could be tediously long due to weak heat transfer. Thus, an improvement of heat transfer and a reduction in charging time is an essential task. The present research aims to improve the thermal charging of a conical shell-tube LHTES unit by optimizing the shell-shape and fin-inclination angle in the presence of nanoadditives. The governing equations for the natural convection heat transfer and phase change heat transfer are written as partial differential equation

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Tascioni, Roberto, Alessia Arteconi, Luca Del Zotto, and Luca Cioccolanti. "Fuzzy Logic Energy Management Strategy of a Multiple Latent Heat Thermal Storage in a Small-Scale Concentrated Solar Power Plant." Energies 13, no. 11 (2020): 2733. http://dx.doi.org/10.3390/en13112733.

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Latent heat thermal energy storage (LHTES) systems allow us to effectively store and release the collected thermal energy from solar thermodynamic plants; however, room for improvements exists to increase their efficiency when in operation. For this reason, in this work, a smart management strategy of an innovative LHTES in a micro-scale concentrated solar combined heat and power plant is proposed and numerically investigated. The novel thermal storage system, as designed and built by the partners within the EU funded Innova MicroSolar project, is subdivided into six modules and consists of 3.

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Wang, Huiru, Zhenyu Liu, and Huiying Wu. "Entransy dissipation-based thermal resistance optimization of slab LHTES system with multiple PCMs arranged in a 2D array." Energy 138 (November 2017): 739–51. http://dx.doi.org/10.1016/j.energy.2017.07.089.

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Sun, Xinguo, Jasim M. Mahdi, Hayder I. Mohammed, Hasan Sh Majdi, Wang Zixiong, and Pouyan Talebizadehsardari. "Solidification Enhancement in a Triple-Tube Latent Heat Energy Storage System Using Twisted Fins." Energies 14, no. 21 (2021): 7179. http://dx.doi.org/10.3390/en14217179.

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This work evaluates the influence of combining twisted fins in a triple-tube heat exchanger utilised for latent heat thermal energy storage (LHTES) in three-dimensional numerical simulation and comparing the outcome with the cases of the straight fins and no fins. The phase change material (PCM) is in the annulus between the inner and the outer tube, these tubes include a cold fluid that flows in the counter current path, to solidify the PCM and release the heat storage energy. The performance of the unit was assessed based on the liquid fraction and temperature profiles as well as solidificat

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Peng, Li, Hongjun Wu, Wenlong Cao, and Qianjun Mao. "Exergy Analysis of a Shell and Tube Energy Storage Unit with Different Inclination Angles." Energies 16, no. 11 (2023): 4297. http://dx.doi.org/10.3390/en16114297.

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To optimize the utilization of solar energy in the latent heat thermal energy storage (LHTES) system, this study conducts exergy analysis on a paraffin-solar water shell and tube unit established in the literature to evaluate the effects of different inclination angles, inlet temperatures, original temperatures, and fluid flow rates on the exergy and exergy efficiency. Firstly, the thermodynamic characteristics of the water and the natural convection effects of the paraffin change with different inclination angles. When the inclination angle of the heat storage tank is less than 30°, the maxim

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Tofani, Kassianne, and Saeed Tiari. "Nano-Enhanced Phase Change Materials in Latent Heat Thermal Energy Storage Systems: A Review." Energies 14, no. 13 (2021): 3821. http://dx.doi.org/10.3390/en14133821.

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Latent heat thermal energy storage systems (LHTES) are useful for solar energy storage and many other applications, but there is an issue with phase change materials (PCMs) having low thermal conductivity. This can be enhanced with fins, metal foam, heat pipes, multiple PCMs, and nanoparticles (NPs). This paper reviews nano-enhanced PCM (NePCM) alone and with additional enhancements. Low, middle, and high temperature PCM are classified, and the achievements and limitations of works are assessed. The review is categorized based upon enhancements: solely NPs, NPs and fins, NPs and heat pipes, NP

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GÜRBÜZ, Habib, Durukan ATEŞ, and Hüsameddin AKÇAY. "A novel design of heating system using phase change material for passenger car cabin in cold starting conditions." International Journal of Automotive Engineering and Technologies 12, no. 3 (2023): 92–104. http://dx.doi.org/10.18245/ijaet.1273428.

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In this paper, the use of exhaust waste heat energy stored in a latent heat thermal energy storage (LHTES) system for cabin heating of a passenger car at cold climate conditions was investigated by experimental and computational fluid dynamics (CFD). A liquid circulation system was installed for this purpose, consisting of two heat exchangers, one in the passenger car's rear compartment and the other in which the phase change material (PCM) in the LHTES system was stored. Commercial RT55 paraffin wax was used as PCM, and tap water was used as heat transfer fluid (HTF). Experimental and CFD ana

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Arena, Simone, Efisio Casti, Jaume Gasia, Luisa F. Cabeza, and Giorgio Cau. "Numerical simulation of a finned-tube LHTES system: influence of the mushy zone constant on the phase change behaviour." Energy Procedia 126 (September 2017): 517–24. http://dx.doi.org/10.1016/j.egypro.2017.08.237.

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Manikandan, R., K. Gopalakrishnan, P. Ashokkumar, et al. "Experimental study of minimum - temperature hydrated salt latent heat thermal energy storage with sodium acetate trihydrate as phase change materials." E3S Web of Conferences 455 (2023): 02008. http://dx.doi.org/10.1051/e3sconf/202345502008.

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There’s a lot of hope for phase change material (PCM) in applications like sustainable energy generation and retrieval of heat loss. Latent heat thermal energy storage (LHTES) systems containing hydrated salt (HS) at minimum-temperature have been the topic of much study, particularly with regards to their thermal behavior and charging-discharging properties. The PCM was prepared by adding sodium acetate trihydrate (SAT), a nucleation agent, and a thickness agent to the test tube. We monitored PCM’s temperature behavior and analyzed its thermal characteristics. Natural convection was the domina

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Mao, Qianjun, Ning Liu, and Li Peng. "Recent Investigations of Phase Change Materials Use in Solar Thermal Energy Storage System." Advances in Materials Science and Engineering 2018 (December 12, 2018): 1–13. http://dx.doi.org/10.1155/2018/9410560.

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Solar thermal energy storage (TES) is an efficient way to solve the conflict between unsteady input energy and steady output energy in concentrating solar power plant. The latent heat thermal energy storage (LHTES) system is a main method of storing thermal energy using phase change materials (PCMs). Thermal properties, that is, melting points and latent heat, are the key parameters of PCMs for the TES system. In this paper, the PCMs are classified into inorganic and organic by the chemical composition, and according to the melting point, the inorganic PCMs can be divided into three contributi

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Shaghaghi, Aidin, Reza Eskandarpanah, Siavash Gitifar, et al. "Energy consumption reduction in a building by free cooling using phase change material (PCM)." Future Energy 3, no. 2 (2024): 31–36. http://dx.doi.org/10.55670/fpll.fuen.3.2.4.

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It is significantly important to implement energy storage systems nowadays. Latent heat thermal energy storage (LHTES) systems contain numerous advantages as a result of their small temperature variation and higher energy storage densities during storage. The present paper deals with the cooling load of a room in Zanjan, Iran using Carrier software. Then, a free cooling system using commercial paraffin RT25 was numerically analyzed as phase change material (PCM) while investigating the effects of the flow rate of the storage tank and inlet air temperature overcharging and discharging procedure

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Behi, Hamidreza, Mohammadreza Behi, Ali Ghanbarpour, et al. "Enhancement of the Thermal Energy Storage Using Heat-Pipe-Assisted Phase Change Material." Energies 14, no. 19 (2021): 6176. http://dx.doi.org/10.3390/en14196176.

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Usage of phase change materials’ (PCMs) latent heat has been investigated as a promising method for thermal energy storage applications. However, one of the most common disadvantages of using latent heat thermal energy storage (LHTES) is the low thermal conductivity of PCMs. This issue affects the rate of energy storage (charging/discharging) in PCMs. Many researchers have proposed different methods to cope with this problem in thermal energy storage. In this paper, a tubular heat pipe as a super heat conductor to increase the charging/discharging rate was investigated. The temperature of PCM,

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El ouali, Abdelmajid, Hajar Zennouhi, Wafaa Benomar, Najma Laaroussi, Tarik El rhafik, and Tarik Kousksou. "Energetic Analysis of Packed Bed Latent Heat Storage Systems." ITM Web of Conferences 46 (2022): 01001. http://dx.doi.org/10.1051/itmconf/20224601001.

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Nowadays, with the rapid growths in world population and economy, the world energy demand and consumption have increased enormously which led to a wide variety of harsh environmental impacts [1]. As a potential solution for energy conservation storing the excess energy to fill the gap between energy supply and demand, using phase change materials (PCMs) has received much attention. Thermal energy storage with PCM is a promising technology based on the principle of latent heat thermal energy storage (LHTES)[2], where PCM absorbs or releases large amounts of energy at a certain temperature durin

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A. Al-Salami, Hayder, Nabeel Dhaidan, and Fadhel N. Al-Mousawi. "Computational study of the PCM charging in the latent heat thermal energy storage system." Kerbala Journal for Engineering Sciences 4, no. 1 (2024): 54–72. https://doi.org/10.63463/kjes1124.

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This paper presents the computational investigation of the charging characteristics of PCM inside a latent heat thermal energy storage (LHTES) unit that consists of a horizontal heat exchanger type of the inner tube and outer shell using ANSYS/FLUENT software. The melting process numerically tested for the heat transfer fluid HTF (water) inlet temperature (60, 70, and 80 °C), and the PCM's initial temperature is 15 °C. Also, this study examined the effect of the mushy zone constant. Extensive measures show that charging time decreases with increased water inlet temperature. The melting of PCM

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Gürsoy, Emrehan, Mehmet Gürdal, and Engin Gedik. "Effect of Triangle Fin Inclination Angle and Aluminum Metal Foam on Melting Process in A Vertical Latent Heat Energy Storage System." Journal of Science, Technology and Engineering Research 6, no. 1 (2025): 11–30. https://doi.org/10.53525/jster.1635055.

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The main objective of this numerical study is to investigate the effect of triangle fin inclination angles (IAs) on the melting process in a Latent Heat Thermal Energy Storage (LHTES) system designed as a vertical rectangular cavity with and without metal foam (MF). In the cases, paraffin wax phase change material (PCM) filled the entire domain, and the Brinkman-Darcy-Forchheimer model, assuming local thermal equilibrium (LTE), and the enthalpy-porosity method were employed to simulate the melting process. In total, 14 different cases were analyzed and the results were validated with literatur

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