Experimental Results of a 3 kWh Thermochemical Heat Storage Module for Space Heating Application

Finck, Christian; Henquet, E.M.R.; Soest, C.F.L. van; Oversloot, H.P.; Jong, A.J. de; Cuypers, Ruud; Spijker, J.C. van 't

doi:10.1016/j.egypro.2014.02.037

Cited by 63 publications

(20 citation statements)

References 5 publications

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“…After the ad‐ or desorption, the storage material is exchanged and has to be transported between the reactor and the reservoir. Open thermochemical heat storage systems are developed in various European and national research projects 32, 43–45. Significant contributions were made by the projects MonoSorp 46 und CWS 40.…”

Section: State Of the Artmentioning

confidence: 99%

A Thermochemical Long‐Term Heat Storage System Based on a Salt/Zeolite Composite

et al. 2016

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For the purpose of a long-term heat storage system based on water sorption, a composite material consisting of CaCl 2 and zeolite Ca-X, obtained by ion exchange with Ca 2+ and subsequent impregnation with CaCl 2 of a binder-free granulated zeolite Na-X, was prepared on a technical scale. In a lab-scale apparatus, the heat storage density of the composite material reaches values up to 260 kWh m -3 for water vapor partial pressures up to 33 mbar. As compared to the pure zeolites Ca-X and Na-X, this corresponds to an increase in heat storage density of 45 % and 68 %, respectively. An engineering concept based on the mechanical transport of the composite heat storage material through a prereactor and a main reactor was demonstrated in a hardware-in-the-loop test bench.

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Section: State Of the Artmentioning

confidence: 99%

A Thermochemical Long‐Term Heat Storage System Based on a Salt/Zeolite Composite

et al. 2016

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“…Finck et al investigated a 3‐kWh thermochemical heat‐storage module for solar‐energy storage as a part of an all‐in house system implementation focusing on space‐heating application at a low temperature level (40°C) with a temperature lift of 20 K. Measurements showed a maximum water circuit temperature span (released by adsorption) was 20 to 51 K, which is by all means suitable for space heating.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of seasonal solar‐energy storage in buildings

et al. 2019

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Summary This paper presents seasonal‐energy storage of solar energy for the heating of buildings. We distinguish several types of seasonal storage, such as latent, sensible, and chemical storage, among which the thermochemical storage is used and analysed in this research. In the first part, a laboratory heat‐storage tank, which was made in the laboratory for heating, sanitary, and solar technology and air conditioning from the Faculty of Mechanical Engineering, University of Ljubljana, Slovenia, was presented. The experimental model was tested for charging and discharging mode. Two types of numerical models for sorption thermal‐energy storage exist, which are microscale and macroscale (integral). For microscale analysis, the analysis system (ANSYS) model can be used to simulate the behaviour in the adsorption reactor. On macroscale or integral scale, TRaNsient SYStem (TRNSYS) model was used to perform the operation of the storages on the yearly basis. In the second part the simulation of the underfloor heating system operation with a built‐in storage tank was carried out for two locations, Ljubljana and Portorož. Furthermore, the comparison between a thermochemical and sensible‐heat storage was performed with TRNSYS and Excel software. In this comparison, the focus was on the surface parameters of the SCs and volume of the thermal‐storage tank for the coverage of the energy demand for selected building. With this analysis, we would like to show the advantage of the thermochemical storage system, to provide greater coverage of the energy demand for the operation of the building, compared with the seasonal sensible‐heat storage (SSHS). Such a heat‐storage technology could, in the future, be a key contributor to the more environmentally friendly and more sustainable way of delivering energy needs for buildings.

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“…The main used materials to store energy as TCM are salt hydrates and sorption materials like zeolites. In a previous study [17], working principles and operating conditions were successfully tested in our zeolite-based reactor set-up. Muller et al…”

Section: Introductionmentioning

confidence: 99%

Thermophysical characterization and thermal cycling stability of two TCM: CaCl 2 and zeolite

Barreneche

Fernández

Cuypers³

2015

Applied Energy

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At this moment, the global energy consumption in buildings is around 40% of the total energy consumption in developed countries. Thermal energy storage (TES) is presented as one way to address this energy-related problem proposing an alternative to reduce the gap between energy supply and energy demand. One way to store energy is using thermochemical materials (TCM). These types of materials allow accumulating energy through a chemical process at low temperature, almost without heat losses. In addition, it is a stable way to perform the heat storage and TCM can be implemented for seasonal storage or/and long term storage. This study compares the cyclability, from the thermophysical point of view, CaCl 2 which follows a chemical reaction and zeolite which follows a sorption process to be used as TCM for seasonal/long term storage. The main results show that the chemical reaction TCM is more energy-efficient than the sorption TCM. The CaCl 2 calculated energy density is 1.47 GJ/m 3 , being the best option to be considered to be used as TCM, even though the dehydration process of the zeolite is simpler and it occurs at higher temperatures its calculated energy density is only 0.2 GJ/m 3 .

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Experimental Results of a 3 kWh Thermochemical Heat Storage Module for Space Heating Application

Cited by 63 publications

References 5 publications

A Thermochemical Long‐Term Heat Storage System Based on a Salt/Zeolite Composite

A Thermochemical Long‐Term Heat Storage System Based on a Salt/Zeolite Composite

Experimental and numerical analysis of seasonal solar‐energy storage in buildings

Thermophysical characterization and thermal cycling stability of two TCM: CaCl 2 and zeolite

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