Fluid flows, thermal engineering, experiments
qualification of helium flow cooling concept.
For a high-tech project, a conduction cooling concept based on helium flow is being consideration. The suitability and performance of this method need to be verified using numerical analysis and experiential verification to qualify the concept. The experimental results and the numerical calculations have demonstrated that helium flow cooling is a suitable method for cooling a workpiece in the high-tech project.
Cooling with helium flow
A heat flux is applied to a single channel using joule heating (resistive heating by the use of a high electric current over the channel which is used as the conductor).
A high flowrate helium flow is driven by a high pressure difference, ∆P>50 bar, through the channel.
The flow temperature is measured on both sides of the test channel to determine the heat transfer coefficient. A variety of flowrates and heat fluxes are tested. The results of the experimental are used to refine the parameters used in the CFD model until a good agreement was found between the two approaches.
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