28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

New measurements of multilayer insulation at variable cold temperature and elevated residual gas pressures

29 Jun 2015, 14:00
2h
Exhibit Hall (Arizona Ballroom) ()

Exhibit Hall (Arizona Ballroom)

Poster Presentation CEC-14 - Thermal Insulation Systems C1PoL - Thermal Insulation

Speaker

Thomas Funke (Technische Universitaet Dresden)

Description

New MLI measurements at the TU Dresden flow type calorimeter have been carried out. Specimens of 10 and 20 layer double side aluminized polyester film were tested. A cylindrical cold surface of 0.9 m²is held at the desired cold boundary temperature between approximately 30 K and 300 K. The heat transfer through the MLI is measured by recording the mass flow as well as the inlet and the outlet temperature of the cooling fluid. Measurements at varied cold boundary temperatures have been performed. Moreover the effect of an additional vacuum degradation – as it might occur by decreasing getter material performance in real systems at elevated temperatures – is studied by a controlled inlet of nitrogen gas. Thus the vacuum pressure was varied over a range of 10-7 mbar to 10-2 mbar. Different cold boundary temperatures between 35 K and 110 K were investigated. Test results of the bare test cylinder as well as 10 and 20 layer MLI are presented.

Primary author

Thomas Funke (Technische Universitaet Dresden)

Co-author

Dr Christoph Haberstroh (Technische Universitaet Dresden)

Presentation Materials