Article
Energy & Fuels
W. Kooijman, D. J. Kok, M. A. R. Blijlevens, H. Meekes, E. Vlieg
Summary: This paper tests a relatively new class of thermochemical compounds for their heat storage potential and identifies one material that meets the desired criteria. Additionally, there are five other salts that meet two out of the three criteria.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Jinjin Rui, Yimo Luo, Mengqi Wang, Jinqing Peng, Xiaohui She
Summary: Thermochemical energy storage with salt hydrates is attracting attention for its high energy storage density, low regeneration temperature, and long-term storage without energy loss. In this study, a novel reactor was designed to address the issues of non-uniform reaction and liquefaction of salt hydrates. The new reactor dispersed the air flow and extended the air outlet channel into the salt bed to increase contact area and remove water vapor, resulting in a 26% reduction in reaction time and a 2.5% increase in thermal efficiency compared to the traditional reactor. Furthermore, the study found that the inlet air temperature had the most significant impact on both thermal efficiency and reaction time, and there was an optimal length of the outflow channel for the shortest reaction time and highest thermal efficiency.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
H. Ye, Y. B. Tao, Z. H. Wu
Summary: This study enhances the thermochemical heat storage performance through numerical simulation, analyzing the relative importance of improving heat transfer and vapor flow under different conditions. The results show that synergistic enhancement can be achieved by improving both simultaneously.
Article
Chemistry, Physical
Meng-Tian Li, Ya-Ting Li, Lu Sun, Zhi-Bin Xu, Yun Zhao, Zi-Hui Meng, Qin-Pei Wu
Summary: This study demonstrates the excellent heat storage performance of magnesium hydroxide doped with cerium nitrate and lithium hydroxide, reducing dehydration temperatures, increasing dehydration and heat storage rates, and decreasing activation energy and pre-exponential factor. The research also shows the promising reversibility of the dehydration-hydration cycle for heat storage using these composites.
Article
Energy & Fuels
Melian A. R. Blijlevens, Natalia Mazur, Wessel Kooijman, Hartmut R. Fischer, Henk P. Huinink, Hugo Meekes, Elias Vlieg
Summary: This study experimentally determines the thermodynamic properties of SrCl2 and reveals its high energy density and full cyclability for at least 10 cycles. The research also investigates the thermodynamic equilibria and metastable zones for each transition, as well as the influence of sample preparation on nucleation kinetics.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Physical
H. Chang, Y. B. Tao, H. Ye
Summary: In this study, a new sandwich configuration reaction bed of metal hydride-thermochemical material (MH-TCM) system was proposed and its excellent hydrogen and thermal storage performance was numerically validated. The results showed that the sandwich reaction bed had faster transfer and reaction rate, resulting in a 61.1% reduction in hydrogen storage time. Increasing the thermal conductivity of the reaction beds further reduced the storage time, while improving the hydrogen inflation pressure enhanced heat transfer and hydrogen absorption rates.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Qian Zhao, Jianquan Lin, Haotian Huang, Zhuwei Xie, Yimin Xiao
Summary: A novel K2CO3-based composite material was successfully synthesized by incorporating expanded graphite and octylphenol polyoxyethylene ether with K2CO3, resulting in significantly improved mass and heat transfer capacities. These composites exhibited high energy storage densities and cycling stability, making them suitable for medium-to-low-temperature thermochemical heat storage applications.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Energy & Fuels
Ting Yan, Hong Zhang
Summary: This article introduces the thermodynamic characteristics and reaction kinetics of salt hydrate-based thermochemical sorption heat storage technology, and evaluates the heat storage potential of salt hydrates. The selection criteria of sorption materials and reaction kinetics models are summarized. The challenges and advanced designs of thermochemical sorption heat storage system are also evaluated.
Article
Energy & Fuels
Mengyi Wang, Li Chen, Yuhao Zhou, Wen-Quan Tao
Summary: In this study, a three-dimensional numerical model is developed to investigate the thermochemical energy storage process by Ca(OH)(2) dehydration reaction. The study reveals that the inlet temperature and velocity of the heat transfer fluid have an impact on the reaction, and lower porosity leads to higher flow resistance. By adding more tubes, the reaction time is shortened and the energy storage amount is increased. Different schemes are discussed to improve the energy conversion performance of the reactor.
Review
Energy & Fuels
Zhendong Ye, Hongzhi Liu, Wantong Wang, Han Liu, Jing Lv, Fan Yang
Summary: This review focuses on the dehydration/hydration kinetics of pure salt hydrates and the desorption/sorption kinetics of composite salt hydrates. The rate of dehydration/desorption can be accelerated by increasing heating temperature or decreasing water vapor pressure, while low temperature and high water vapor pressure are usually beneficial for hydration/sorption kinetics. Smaller particle sizes and larger relative surface areas can enhance the reaction kinetics. The desorption/sorption kinetics of composite salt hydrates are generally faster than those of pure salt hydrates.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Khuram Walayat, Jason Duesmann, Thomas Derks, Amir Houshang Mahmoudi, Ruud Cuypers, Mina Shahi
Summary: Salt hydrates are promising candidates for long-term thermochemical heat storage in buildings, releasing and storing energy through dehydration and hydration reactions. Understanding heat and mass transfer processes in the packed beds of salt hydrates is crucial to construct an improved system, as poor transfer can be a bottleneck in the technology.
APPLIED THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Ruby-Jean Clark, Gohar Gholamibozanjani, Jason Woods, Sumanjeet Kaur, Adewale Odukomaiya, Said Al-Hallaj, Mohammed Farid
Summary: This study selected and tested the most promising salts for storing intermediate heat energy. Based on the set criteria, SrCl2 and SrBr2 were concluded to be the most promising salts.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Bas G. P. van Ravensteijn, Pim A. J. Donkers, Rick C. Ruliaman, Jacco Eversdijk, Hartmut R. Fischer, Henk P. Huinink, Olaf C. G. Adan
Summary: Efficient and cheap storage of energy from renewable resources is crucial for the ongoing energy transition. Storing heat in thermochemical materials (TCMs) like salt hydrates can meet this demand by capturing heat reversibly and loss-free. However, a persistent bottleneck in full-scale application is the low mechanical resilience of salt grains and their tendency to coagulate or dissolve when in contact with water vapor. Encapsulating salt grains with stabilizing polymer coatings, such as cellulose-based coatings, can enhance their structural integrity and permeability, making them suitable for domestic TCM-based heat storage applications.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Chemical
Mengyi Wang, Li Chen, Yuhao Zhou, Wen-Quan Tao
Summary: The study develops a one-dimensional model to analyze the hydration reaction process of the CaO/Ca(OH)(2) system, discusses the reaction performance under different conditions, and comprehensively evaluates the reaction performance with four indicators.
TRANSPORT IN POROUS MEDIA
(2021)
Article
Energy & Fuels
Ata Ur Rehman, Tianyu Zhao, Muhammad Zahir Shah, Yaqoob Khan, Asif Hayat, Changwei Dang, Maosheng Zheng, Sining Yun
Summary: This study demonstrates a novel thermo-chemical heat storage material using a 2D MXene nanohybrid, MgSO4/Ti3C2Tx, which exhibits improved hydration/dehydration enthalpy, superior thermal conductivity, good cyclic ability, maximum water sorption performance, and larger thermal energy conversion. The results suggest that the MgSO4/MXene nanohybrid has excellent long-term thermal energy storage, photo-to-thermal conversion, and larger water sorption performance, making it a promising candidate for thermochemical heat storage applications.
Article
Thermodynamics
Yunsong Zhang, Wei Chen, Wei Li, Xiao Zhu
Article
Green & Sustainable Science & Technology
Wei Li, Jiri Jaromir Klemes, Qiuwang Wang, Min Zeng
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Thermodynamics
Pengbo Zhao, Renkun Dai, Wei Li, Qiuwang Wang, Min Zeng
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2020)
Article
Energy & Fuels
Wei Li, Min Zeng, Qiuwang Wang
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2020)
Article
Energy & Fuels
Renkun Dai, Wei Li, Javad Mostaghimi, Qiuwang Wang, Min Zeng
Review
Green & Sustainable Science & Technology
Wei Li, Renkun Dai, Min Zeng, Qiuwang Wang
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2020)
Article
Green & Sustainable Science & Technology
Wei Li, Jiri Jaromir Klemes, Qiuwang Wang, Min Zeng
Article
Green & Sustainable Science & Technology
Wei Li, Jiri Jaromir Klemes, Qiuwang Wang, Min Zeng
Summary: With the increasing energy consumption and environmental degradation, the recovery of low-grade industrial waste heat and the development and utilization of renewables have become urgent needs. Adsorption thermochemical energy storage using LiOH·H2O as a potential thermochemical material candidate shows promising results, with samples containing 5% and 8% EG displaying superior sorption capacity and kinetics at various relative humidities. The stability of the composite sorbent containing 8% EG is demonstrated through high retention of original energy storage densities after multiple cycles.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Wei Li, Jirf Jaromfr Klemes, Qiuwang Wang, Min Zeng
Summary: This study investigates the composite sorbents consisting of expanded graphite and LiOH, LiCl with potential thermochemical energy storage capacity. By adjusting the mass ratio of LiOH and LiCl, thermal upgrade at different temperature requirements can be achieved, accompanied by high volumetric energy storage density. The cyclic performance results demonstrate the good stability of the materials.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Wei Li, Jiri Jaromir Klemes, Qiuwang Wang, Min Zeng
Summary: The study aims to improve the thermo-chemical conversion behaviours of an open TCES unit using LTNE model and non-uniform porosity, with cascading reaction sub-units filled with different TCMs to ameliorate output performance. Numerical results show that cascading scheme stabilises output temperature during discharging, and increasing charging temperature and airflow inlet velocity accelerates charging rate.
Article
Thermodynamics
Wei Li, Xinyi Luo, Ping Yang, Qiuwang Wang, Min Zeng, Christos N. Markides
Summary: This paper investigates the reaction kinetics of thermochemical sorbents synthesized by the author, focusing on their dehydration and hydration reactions for thermal energy storage. A novel solar building envelope design combining thermochemical energy storage and photocatalysis is proposed for efficient space heating and air purification. Numerical simulations show that the passive building envelope can achieve a total efficiency of around 81% when solar radiation is at 600 W/m(2), providing higher heat harvesting and utilization efficiency in a more compact space.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Wei Li, Jiri Jaromir Klemes, Qiuwang Wang, Min Zeng
Summary: This study provides a comprehensive overview of salt hydrate based gas-solid thermochemical energy storage systems, discussing materials properties, reactor types, applications, heat and mass transfer processes, reaction mechanisms, and offering critical comments and outlooks. It evaluates the development of thermochemical materials, the design of reactors and prototypes, theoretical models, and identifies challenges and prospects in the field.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Wei Li, Jiri Jaromir Klemes, Qiuwang Wang, Min Zeng
Summary: This study investigated an innovative passive battery thermal management strategy based on sorption heat storage, achieving effective temperature regulation of the battery pack under high discharge rates. The multi-physics model developed in this work showed promising results in maintaining the battery pack within a desired temperature range.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Wei Li, Lianjie Zhang, Jiri Jaromfr Klemes, Qiuwang Wang, Min Zeng
Summary: This study proposes a corrugated-shaped heat storage unit with an embedded porous metal bracket to enhance heat transfer and comprehensively investigates thermo-chemical conversion behaviors. Numerical results show that increasing the heat fluid transfer temperature facilitates charging while decreasing reaction bed temperature promotes discharging. Increasing evaporation temperature and thermal conductivity of the thermochemical material can shorten the reaction period.
Article
Thermodynamics
Lianjie Zhang, Ping Yang, Wei Li, Jiri Jaromir Klemes, Min Zeng, Qiuwang Wang
Summary: This study proposes a new structure with phase change materials embedded in the printed circuit heat exchanger to attenuate temperature fluctuations in the supercritical CO2 Brayton cycle, and achieves good results.
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)