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Influence of the temperature distribution on the thermal resolution of a miniaturized ceramic differential scanning calorimeter

Titelangaben

Brandenburg, Annica ; Wappler, Eberhard ; Kita, Jaroslaw ; Moos, Ralf:
Influence of the temperature distribution on the thermal resolution of a miniaturized ceramic differential scanning calorimeter.
2014
Veranstaltung: Thermal Analysis and Calorimetry in Industry and Research : 40 Years of GEFTA , 16.-19.09.2014 , Berlin, Deutschland.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung , Vortrag )

Angaben zu Projekten

Projekttitel:
Offizieller Projekttitel
Projekt-ID
Ohne Angabe
KF2116719WM2

Projektfinanzierung: Bundesministerium für Wirtschaft und Technologie

Abstract

This study reports on a simulation based optimization of the thermal resolution of a miniaturized ceramic differential scanning calorimeter (DSC-Chip). This chip is a fully functioning DSC apparatus. It includes furnace, sample and reference temperature sensors as well as a crucible, all together in a size of only 39 mm x 11 mm x 1.2 mm. Despite its small size, its calorimetric properties are comparable to conventional DSC apparatuses [1-3]. The DSC-Chip is fully manufactured in Low Temperature Co-firing Ceramics technology (LTCC). In DSC analysis, a high thermal resolution and a homogeneous temperature distribution within the analyzed sample are related. Therefore, the temperature distribution inside the crucible zone of the DSC chip was optimized. Due to the reduction of the thermal mass and the variation of the width and distance of single meanders of the screen-printed heater conductor, the heat output could be adjusted to form a temperature field with a 30% improvement of the temperature homogeneity within the crucible zone. Infrared camera images of real structures, which were manufactured based on these results, validated the simulated temperature distribution. Test results obtained from Dotriacontane showed an increased thermal resolution of 60% compared to the initial structure with 40%. Co-beneficial is the reduced power demand from 1.52 W to 1.04 W to reach 156.6 °C with a heating rate of 50 K/min.

Weitere Angaben

Publikationsform: Veranstaltungsbeitrag (Vortrag)
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien > Lehrstuhl Funktionsmaterialien - Univ.-Prof. Dr.-Ing. Ralf Moos
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien
Profilfelder > Advanced Fields > Neue Materialien
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 11 Mai 2015 11:50
Letzte Änderung: 15 Apr 2016 07:25
URI: https://eref.uni-bayreuth.de/id/eprint/13166