Article
Energy & Fuels
Minh Hoang Nguyen, Mohamed Zbair, Patrick Dutournie, Simona Bennici
Summary: Sorption-based thermal storage is an attractive approach for sustainable and cost-effective thermal management and energy storage. However, the low sorption capacity of sorbents has been a challenge. This research investigates the use of MgSO4/bead activated carbon composites for thermochemical sorption heat storage, which showed high heat release and sorption capacity. The composite achieved higher water sorption capacity and thermal energy density due to the highly developed microporosity and high thermal conductivity of bead activated carbon. This research provides a promising low-carbon pathway for efficient thermal energy capture, storage, and utilization.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Minh Hoang Nguyen, Mohamed Zbair, Patrick Dutournie, Antonella Gervasini, Cyril Vaulot, Simona Bennici
Summary: A new two-component water sorbent MgSO4 / Hydroxyapatite has been developed for sorption-based solar heat storage. The composite material has high water sorption capacity and heat of hydration, and exhibits relatively good stability.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Energy & Fuels
K. Sarath Babu, E. Anil Kumar
Summary: A novel compressor operated resorption thermochemical energy storage system (CRTES) is proposed for heat storage, combined cooling and heat upgradation. The system utilizes halide salt-ammonia working pairs and has been analyzed for its thermodynamic performance using different salt combinations. FeCl2-NaBr and SrCl2-KI were found to have the highest heat up gradation and energy storage efficiency, respectively.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Mohamed Zbair, Minh Hoang Nguyen, Patrick Dutournie, Simona Bennici
Summary: In this study, salt hydrates were deposited on a porous carbon support to improve the heat capacity and hydration kinetics in thermochemical heat storage systems. The results show that binary salt composites exhibit faster hydration kinetics and higher water adsorption capacity than monosalt composites. The addition of MgCl2 overcomes the kinetic drawbacks and enhances the performance of the composites.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Zhang Xueling, Wang Feifei, Zhang Qi, Lei Xudong, Wang Yanling, Zhang Yeqiang, Cheng Chuanxiao, Jin Tingxiang
Summary: A new composite thermochemical heat storage material was proposed with optimized samples Smix, Xopt, and Yopt exhibiting different adsorption capacities and heat storage densities. Among them, Xopt showed the highest adsorption capacity and heat storage density, as well as good cycle stability, indicating its potential application in medium- and low-temperature thermochemical adsorption heat storage systems.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Thermodynamics
Alexander W. Raymond, Srinivas Garimella
Summary: A distributed-parameter model of a sorption bed heat and mass exchanger is presented, showing substantial temperature differences and uptake variations during the heating stage. Improvements in contact heat transfer coefficient between adsorbent and tube lead to significant reductions in sorption bed cycle time.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Energy & Fuels
George H. Atkinson, Samuel Hinmers, Robert E. Critoph, Michel van der Pal
Summary: The adsorption and desorption reactions of ammonium chloride with ammonia in a resorption heat pump show promising working temperatures and pressure ranges, with no hysteresis between the two reactions. Experimental values for reaction enthalpy and entropy have been obtained, and a semi-empirical model has successfully characterized the NH4Cl composite salt for predicting reaction behavior. Overall, the study investigates the working equilibrium line and dynamic performance of ammonium chloride as a Low Temperature Salt for a resorption heat pump.
Article
Green & Sustainable Science & Technology
Kokouvi Edem N'Tsoukpoe, Frederic Kuznik
Summary: This paper focuses on the challenges and questioning of long-term thermochemical heat storage for household applications, highlighting the significant thermal losses in seasonal thermochemical storage. The study suggests that the energy storage density based on solid hydrates or aqueous solutions may not be practical for long-term thermal energy storage for domestic hot water and heating.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Perizat Berdiyeva, Anastasiia Karabanova, Didier Blanchard, Bjorn C. Hauback, Stefano Deledda
Summary: This study used in-situ neutron imaging to investigate the ammonia sorption reaction in a SrCl2-Expanded Natural Graphite (ENG) composite, revealing the formation of Sr(NH3)(8)Cl-2 upon ammonia uptake and the stepwise release of ammonia resulting in the formation of Sr(NH3)Cl-2. Neutron imaging also allowed for the evaluation of heat conductivity in the stainless-steel honeycomb and showed that heat is primarily transferred through the ENG matrix. Additionally, neutron tomography was performed to ensure the stability of the THS system and composite material during ammonia cycling experiments.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Thermodynamics
Qi Xia, Huichong Qiu, Junqi Wang, Jianguo Zhao, Chen Chen, Weiya Jin, Qibin Liu
Summary: Recently, distributed renewable energy system has become a flexible, reliable and environmentally friendly alternative to the conventional large-scale centralized power plant. This paper proposed a distributed concen-trating solar power system coupled with an ammonia-based chemical heat pump. The proposed system is able to upgrade the solar thermal energy absorbed from 450 degrees C to 650 degrees C. The results show that the reaction conversion increases with the reactor length increasing, while thermochemical conversion efficiency decreases.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Ata Ur Rehman, Tianyu Zhao, Ihsan Muhammad, Shehla Rasheed, Rahim Shah, Adnan Raza Altaf, Fumin Zhang, Sining Yun
Summary: Researchers synthesized a new MgCl2/MXene (Ti3C2Tx) composite sorbent for low-temperature thermochemical heat storage through the impregnation method. Various techniques were used to characterize the mechanical and thermal properties of the MgCl2/MXene composites. The results showed that the MXene-based composites exhibited improved adsorption properties and cyclic stability compared to pure MgCl2. The water sorption kinetics and energy storage density of the composites were also evaluated, indicating their potential for long-term heat storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Hong Zhang, Ting Yan, Nan Yu, Z. H. Li, Q. W. Pan
Summary: The heat storage efficiency of thermochemical sorption system decreases as the discharging temperature increases, while the coefficient of performance is raised with the increasing discharging temperature. Under the experimental conditions, the highest values of sorption heat storage efficiency and coefficient of performance are 0.687 and 0.405, respectively.
Article
Energy & Fuels
Elise Berut, Laurence Bois, Quentin Touloumet, Jonathan Outin, Michel Ondarts, Georgeta Postole, Maria Jose Rueda Lopez, Aline Auroux, Nolwenn Le Pierres
Summary: Composite sorbents based on silica and polyethylene glycol with calcium chloride exhibited good heat storage performance. The presence of polyethylene glycol enhanced the stability of hydrated calcium chloride and prevented salt leakage. Compared to zeolite, the composite sorbents had a higher mass energy density, making them suitable for heat storage applications with moderate power outputs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Abel Mehari, Z. Y. Xu, R. Z. Wang
Summary: This paper proposes an open three-phase absorption thermal storage cycle that is suitable for complete crystallization process without vacuum operation, with high energy storage density and easy operation. Through thermodynamic analysis of different working pairs, it is found that the cycle with LiCl-H2O as the working pair has the highest energy storage density.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Quentin Touloumet, Lishil Silvester, Laurence Bois, Georgeta Postole, Aline Auroux
Summary: Composite materials based on AF and CaCl2 were developed for energy storage, with the salt content affecting the water sorption rate and heat of water sorption. Higher salt content led to better performance in terms of water absorption capacity and heat of sorption.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
