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Measurement of the transient heat transfer to liquid helium from a thin metal film

โœ Scribed by B.A. Danil'chenko; V.N. Poroshin

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
263 KB
Volume
23
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

A method to measure transient heat transfer to liquid helium from a thin metal film heater under the condition of pulsed heating during r < 400 ns is proposed. The experimental equipment used for the measurements is described.

The method is based on the comparison of heat pulses transfered from the heater into a monocrystal substrate which is surrounded either by vacuum or by liquid helium. The method can also be used to investigate the heat flux density transmitted into liquid helium over a wide region of thermal loads. Experimental results showing the heat flux density radiated from a Cu heater into liquid helium at 3.8 K as a function of the electric power fed into the heater by pulses of 200-400 ns duration are demonstrated.

Measurement

of the transient heat transfer to liquid helium from a thin metal film B.A. Danil'chenko and V.N.

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