Studies on helium flow in experimental loops with different impedances operated with fountain effect pumps

Kasthurirengan, S and Hofmann, A (1993) Studies on helium flow in experimental loops with different impedances operated with fountain effect pumps. In: Cryogenics, 33 (12). pp. 1125-1131.

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Abstract

An experimental flow loop with He II flow driven by fountain effect pumps (FEPs) is studied with respect to operation at different flow impedances and with thermal loads applied at different positions. The measured values of temperature, flow rate and pressure drop are compared with calculations resulting from a simplified model which assumes ideal performance of the porous plug and of the heat exchangers and which does not take into account Gorter-Mellink (GM) conduction. The main features of the loop are shown to be well described by this model. Refined calculations with a more complex model, including GM conduction of the He II, are only required for predicting the temperature distribution in some discrete regions of the loop.

Item Type:	Journal Article
Publication:	Cryogenics
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	helium; fountain effect pumps; thermodynamics
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	28 Feb 2011 05:51
Last Modified:	28 Feb 2011 05:51
URI:	http://eprints.iisc.ac.in/id/eprint/35779

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