Searched for: subject%3A%22Hydration%22
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Blijlevens, M.A.R. (author), Mazur, N. (author), Kooijman, W. (author), Fischer, H.R. (author), Huinink, H.P. (author), Meekes, H. (author), Vlieg, E. (author)
We have experimentally determined the main thermodynamic properties of SrCl2, a potentially promising salt for thermochemical heat storage. We found a high energy density of 2.4 ± 0.1 GJ/m3 and proved full cyclability for at least 10 cycles going from the anhydrate to the hexahydrate without chemical degradation. We have experimentally...
article 2022
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Mazur, N. (author), Salviati, S. (author), Huinink, H. (author), Fina, A. (author), Carioso, A. (author), Fisher, P. (author), Adan, O. (author)
Thermochemical heat storage (TCHS) in salt hydrates attracts increasing interest due to the high energy density combined with loss-free storage. Strontium bromide hexahydrate (SBH), and composites thereof, are often suggested as suitable materials for this application. Although many aspects of SBH composites have been thoroughly investigated,...
article 2022
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Houben, J. (author), Langelaan, D. (author), Brinkman, L. (author), Huinink, H. (author), Fischer, H.R. (author), Adan, O.C.G. (author)
In this work, the relation between mobility and metastability is investigated. This is done under pure water vapor vacuum conditions. First, the properties of the metastable zone under pure water vapor conditions are investigated and compared to those under atmospheric conditions. Second, mobility is investigated using electrochemical impedance...
article 2022
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Mazur, N. (author), Huinink, H. (author), Fischer, H. (author), Donkers, P. (author), Adan, O. (author)
Potassium carbonate (K2CO3) is a promising thermochemical heat storage material (TCM). However, it suffers from hysteresis between (de)hydration temperatures and poor reaction kinetics close to equilibrium conditions. Both aspects are caused by a nucleation barrier and low ionic mobility close to equilibrium. This study investigates the impact...
article 2022
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Aarts, J. (author), de Jong, S. (author), Cotti, M. (author), Donkers, P. (author), Fischer, H. (author), Adan, O.C.G. (author), Huinink, H. (author)
Potassium carbonate is a promising salt for thermochemical heat storage. For an application mm-sized salt hydrate particles are manufactured to be loaded inside a reactor. The step towards larger particles is necessary to prevent a large pressure drop over the reactor bed during hydration/dehydration in a given air flow. Therefore, in this work...
article 2022
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van Ravensteijn, B.G.P. (author), Donkers, P.A.J. (author), Ruliaman, R.C. (author), Eversdijk, J. (author), Fischer, H. (author), Huinink, H.P. (author), Adan, O.C.G. (author)
Efficient and cheap storage of energy from renewable resources presents a key technology to facilitate the ongoing energy transition. Storing heat in thermochemical materials (TCMs), such as salt hydrates, provides a promising concept to meet this demand. TCMs can capture heat reversibly and loss-free by relying on equilibrium hydration...
article 2021
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Sögütoglu, L.-C. (author), Birkelbach, F. (author), Werner, A. (author), Fischer, H. (author), Huinink, H. (author), Adan, O.C.G. (author)
K2CO3 is a promising salt for thermochemical heat storage. For a high performance, the thermochemical reaction must take place as close as possible to the equilibrium, while ensuring sufficient reaction rates. In this work, we studied the near-equilibrium hydration kinetics of K2CO3 and other salts (CuCl2, MgCl2 and LiCl). We proposed a generic...
article 2021
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Mahmoudi, A. (author), Donkers, P.A.J. (author), Walayat, K. (author), Peters, B. (author), Shahi, M. (author)
Salt hydrates are promising candidates for the long-term thermochemical heat storage (TCES) in thebuilding environment. In such storage systems, the surplus of energy will be exploited in an endothermicreaction to dehydrate the salt hydrates. Once it is demanded, the stored energy will be released throughan exothermic reaction by hydrating the...
article 2021
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Donkers, P. (author), Gao, K. (author), Houben, J. (author), Huinink, H. (author), Erich, B. (author), Adan, O. (author)
A promising heat storage technique is based on thermochemical materials (TCM). Such materials are often used in closed systems under vacuum conditions, which is demonstrated in several projects in the European H2020 R&D programs. In this type of systems, non-condensable gasses (NCG) may have a significant effect on the reactor performance. This...
article 2020
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Shkatulov, A. (author), Joosten, R. (author), Fischer, H. (author), Huinink, H. (author)
The advent of thermochemical energy storage (TcES), that is, storage of thermal energy by means of reversible chemical reactions, incites finding pathways of stabilization of thermochemical materials for thermal batteries of the future. Currently, salt hydrates such as LiCl·H2O, CaCl2·6H2O, and SrBr2·6H2O are being actively studied for TcES in...
article 2020
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Sogütoglu, L.C. (author), Steiger, M. (author), Houben, J. (author), Biemans, D. (author), Fischer, H.R. (author), Donkers, P.A.J. (author), Huinink, H. (author), Adan, O.C.G. (author)
The solid-state hydration of salts has gained particular interest within the frame of thermochemical energy storage. In this work, the water vapor pressure-temperature (p-T) phase diagram of the following thermochemical salts was constructed by combining equilibrium and nonequilibrium hydration experiments: CuCl 2 , K 2 CO 3 , MgCl 2 ·4H 2 O,...
article 2019
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Faiyas, A.P.A. (author), Erich, S.J.F. (author), Huinink, H.P. (author), Adan, O.C.G. (author)
This article presents an experimental investigation on the influence of Methylhydroxyethylcellulose (MHEC) modified mortar on water absorption into tile and base substrate using Nuclear Magnetic Resonance (NMR) imaging. Addition of MHEC shifts the absorption behavior from homogeneous to inhomogeneous as a result of increased viscosity of pore...
article 2019
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Kartaram, S. (author), Mensink, M. (author), Teunis, M. (author), Schoen, E. (author), Witte, G. (author), Janssen Duijghuijsen, L. (author), Verschuren, M. (author), Mohrmann, K. (author), M'Rabet, L. (author), Knipping, K. (author), Wittink, H. (author), van Helvoort, A. (author), Garssen, J. (author), Witkamp, R. (author), Pieters, R. (author), van Norren, K. (author)
Background & aims: Plasma citrulline concentration is considered to be a marker for enterocyte metabolic mass and to reflect its reduction as may occur during intestinal dysfunction. Strenuous exercise can act as a stressor to induce small intestinal injury. Our previous studies suggest that this comprises the intestinal ability to produce...
article 2019
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Morabito, M. (author), Messeri, A. (author), Noti, P. (author), Casanueva, A. (author), Crisci, A. (author), Kotlarski, S. (author), Orlandini, S. (author), Schwierz, C. (author), Spirig, C. (author), Kingma, B.R.M. (author), Flouris, A.D. (author), Nybo, L. (author)
Existing heat–health warning systems focus on warning vulnerable groups in order to reduce mortality. However, human health and performance are affected at much lower environmental heat strain levels than those directly associated with higher mortality. Moreover, workers are at elevated health risks when exposed to prolonged heat. This study...
article 2019
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Shkatulov, A.I. (author), Houben, J. (author), Fischer, H. (author), Huinink, H.P. (author)
Thermochemical energy storage (TCES) is an emerging technology promising for domestic applications. Recently, K2CO3 was identified and studied as a TCES material. In this work, the composite “K2CO3 in expanded vermiculite” (69 wt. % of the salt) was prepared and studied for thermochemical energy storage bearing in mind its application for space...
article 2019
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Sögütoglu, L.C. (author), Donkers, P.A.J. (author), Fischer, H.R. (author), Huinink, H.P. (author), Adan, O.C.G. (author)
Thermochemical materials K2CO3, MgCl2 and Na2S have been investigated in depth on energy density, power output and chemical stability in view of domestic heat storage application, presenting a critical assessment of potential chemical side reactions in an open and closed reactor concept. These materials were selected based on a recent review on...
article 2018
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de Jong, A.J. (author), Fischer, H. (author)
Hygroscopic salts exhibiting fast and reversible hydration are promising systems for seasonal heat storage, providing the possibility of storing excess solar energy from the warm season for later use during the cold season. For heat storage, the salt is dehydrated with the available heat, and for heat recovery, the salt is rehydrated. There are...
article 2018
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Donkers, P.A.J. (author), Sögütoglu, L.C. (author), Huinink, H.P. (author), Fischer, H.R. (author), Adan, O.C.G. (author)
A literature review is performed in order to collect and analyse the thermodynamic data of an utmost number of salt hydrate reactions (i.e., 563 reactions are reviewed). These data allow us to evaluate the theoretical possibilities and limitations of salt hydrates as thermochemical materials (TCMs) for seasonal heat storage in the built...
article 2017
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Donkers, P.A.J. (author), Pel, L. (author), Adan, O.C.G. (author)
For heat/cold storage systems a granular bed of salt hydrates is studied during dehydration/hydration. The water density in these beds are measured with help of NMR. Diffusion based dehydration of a granular bed of Na2SO4·10H2O is shown to be internally limited as larger grains dehydrate faster than smaller grains as result of cooling of the...
article 2017
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Berkulo, M.A.R. (author), Bol, S. (author), Levels, K. (author), Lamberts, R.P. (author), Daanen, H.A.M. (author), Noakes, T.D. (author)
The aim of this study was to investigate if drinking ad-libitum can counteract potential negative effects of a hypohydrated start caused by fluid restriction during a 40-km time trial (TT) in the heat. Twelve trained males performed one 40-km cycling TT euhydrated (EU: no water during the TT) and two 40-km cycling TTs hypohydrated. During one...
article 2016
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