Ursula Wittstadt

Dr. Ursula Wittstadt


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 August 2015 in Energies
Verified
Journal Article
Open access
PDF file
UWUrsula Wittstadt
Ursula Wittstadt
GFGerrit Füldner
Gerrit Füldner
OAOlaf Andersen
Olaf Andersen
RHRalph Herrmann
Ralph Herrmann
FSFerdinand Schmidt
Ferdinand Schmidt
In order to achieve process intensification for adsorption chillers and heat pumps, a new composite material was developed based on sintered aluminum fibers from a melt-extraction process and a dense layer of silico-aluminophosphate (SAPO-34) on the fiber surfaces. The SAPO-34 layer was obtained through a partial support transformation (PST) process. Preparation of a composite sample is described and its characteristic pore size distribution and heat conductivity are presented. Water adsorption data obtained under conditions of a large pressure jump are given. In the next step, preparation of the composite was scaled up to larger samples which were fixed on a small adsorption heat exchanger. Adsorption measurements on this heat exchanger element that confirm the achieved process intensification are presented. The specific cooling power for the adsorption step per volume of composite is found to exceed 500 kW/m3 under specified conditions.

7 June 2023
Verified
Book Chapter
Closed access
PDF file
LSLena Schnabel
Lena Schnabel
GFGerrit Füldner
Gerrit Füldner
AVAndreas Velte
Andreas Velte
Eric LaurenzEric Laurenz
Eric Laurenz
PBPhilip Bendix
Philip Bendix
UWUrsula Wittstadt
Ursula Wittstadt