TY - THES

T1 - Validation of the suitability of a zeolite-salt composite for its use in thermochemical energy storage applications

AU - Ponak, Christoph

N1 - embargoed until null

PY - 2016

Y1 - 2016

N2 - The aim of this thesis is to validate the suitability of a clinoptilolite-calcium chloride composite material for its use in thermochemical energy storage applications. The practical part of this thesis involves two subtasks, one of which was that an existing experimental setup was optimised. The biggest improvement is the possibility to accurately adjust the relative humidity of the used synthetic air. Subsequently, pure clinoptilolite, the synthetic zeolite 13XBF as well as composites with different mass fractions of salt and hydrophobicity treatment were studied in the same desorption-adsorption cycle. With the help of thorough literature research, the results are ascribed to the complex process in the sorption reactor. It shows that the salt impregnation is able to improve the thermal properties of the pure zeolite. The hydrophobicity treatment turns out to be a suitable way of stabilising the salt on the zeolite surface. Problems, which make the applicability of the composite materials unviable at this time, are explained and analysed in order to lead the way for future research.

AB - The aim of this thesis is to validate the suitability of a clinoptilolite-calcium chloride composite material for its use in thermochemical energy storage applications. The practical part of this thesis involves two subtasks, one of which was that an existing experimental setup was optimised. The biggest improvement is the possibility to accurately adjust the relative humidity of the used synthetic air. Subsequently, pure clinoptilolite, the synthetic zeolite 13XBF as well as composites with different mass fractions of salt and hydrophobicity treatment were studied in the same desorption-adsorption cycle. With the help of thorough literature research, the results are ascribed to the complex process in the sorption reactor. It shows that the salt impregnation is able to improve the thermal properties of the pure zeolite. The hydrophobicity treatment turns out to be a suitable way of stabilising the salt on the zeolite surface. Problems, which make the applicability of the composite materials unviable at this time, are explained and analysed in order to lead the way for future research.

KW - Zeolith

KW - Sorption

KW - Energiespeicherung

KW - physikalische Chemie

KW - thermische Verfahrenstechnik

KW - zeolite

KW - sorption

KW - energy storage

KW - physical chemistry

KW - thermal processing technology

M3 - Master's Thesis

ER -