Design and test of a pumped two-phase mounting plateThe design, fabrication, and testing of the full-scale development unit of a pumped two-phase mounting plate (TPMP) used in advanced two-phase spacecraft thermal control systems are described. The mounting plate is tested with R-11 in the evaporator mode for total heat loads of over 3000 watts and local heat fluxes over 4 W/sq cm, and in the condenser mode with condenser loads from 60 to 400 watts and inlet qualities from 8 to 94 percent. The calculated heat-transfer coefficients are between 0.66 and 1.0 W/sq cm/C and are nearly independent of the flow rate and heat load except at very low heat loads. It is shown that the TPMP can be run with inlet conditions down to 22 C subcooling without any significant gradients in the plate and that it performs well with nonuniform heat fluxes.
Document ID
19850055437
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Grote, M. G. (McDonnell Douglas Astronautics Co. St. Louis, MO, United States)
Swanson, T. D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)