Forced Convection Heat Transfer to Subcritical Helium I.
NATIONAL BUREAU OF STANDARDS BOULDER COLO CRYOGENICS DIV
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Preliminary results of an experimental investigation of heat transfer to liquid helium under forced flow conditions are reported for a 0.213 cm i.d. x 10 cm long test section subject to the following range of operating conditions System pressures 1.1 - 2.1 atm Mass velocities 4 - 64 gs-square cm Heat fluxes 0.04 - 0.53 Wsquare cm Inlet subcooling 0.03 - 0.10 K. The effect of the above system parameters on the heat transfer and critical heat flux is discussed a comparison of forced convection boiling with other modes of heat transfer pool boiling and supercritical and the performance of centrifugal pump used for circulating the liquid helium are also included in the report. Author