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Commissioning of the cryogenic safety test facility PICARD

Heidt, Carolin; Schön, H.; Stamm, M.; Grohmann, Steffen

The sizing of cryogenic safety relief devices requires detailed knowledge on the evolution of the pressure increase in cryostats following hazardous incidents such as the venting of the insulating vacuum with atmospheric air. Based on typical design and operating conditions in liquid helium cryostats, the new test facility PICARD, which stands for Pressure Increase in Cryostats and Analysis of Relief Devices, has been constructed. The vacuum-insulated test stand has a cryogenic liquid volume of 100 liters and a nominal design pressure of 16 bar(g). This allows a broad range of experimental conditions with cryogenic fluids. In case of helium, mass flow rates through safety valves and rupture disks up to about 4 kg/s can be measured. Beside flow rate measurements under various conditions (venting diameter, insulation, working fluid, liquid level, set pressure), the test stand will be used for studies on the impact of two-phase flow and for the measurement of flow coeffcients of safety devices at low temperature. This paper describes the operating range, layout and instrumentation of the test stand and presents the status of the commissioning phase.

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Volltext §
DOI: 10.5445/IR/1000052883
DOI: 10.1088/1757-899X/101/1/012161
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Thermodynamik und Kältetechnik (ITTK)
Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 1757-8981
KITopen-ID: 1000052883
HGF-Programm 37.06.02 (POF III, LK 01)
New Power Network Technology
Erschienen in IOP Conference Series: Materials Science and Engineering
Band 101
Heft 1
Seiten 012161/1-7
Schlagwörter Cryogenics, liquid helium, safety, test setup, heat flux, relief flow rate
Nachgewiesen in Scopus
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