A swirl flow evaporative cold plateA forced flow evaporative cold plate is under development for future application to the thermal bus concept being pursued by NASA for Space Station Thermal Control. The vaporizer is a swirl-flow device employing a spiral tube coil geometry sandwiched between conductive metal plates upon which electric components could be mounted. This concept is based on the inherent phase separation that occurs in a two phase stream in curvilinear flow. This is a zero 'g' design with one 'g' all-attitude capability and is capable of high heat transfer coefficients, good isothermality, and the ability to function at heat fluxes approaching 5w/sq cm on the cold plates (10w/sq cm on the tube wall) with Freon 114. The advantages of this design over other two phase evaporator approaches are high heat flux capability, simplified control requirements, insensitivity to micro-gravity oscillations, and inexpensive manufacturability. The program included design, fabrication, and test of such a cold plate utilizing an existing test stand developed for two-phase thermal management system (TPTMS) testing. Test results analysis and conclusions are included.
Document ID
19850055438
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Niggemann, R. E. (Sundstrand Corp. Rockford, IL, United States)
Greenlee, W. J. (Sundstrand Corp. Rockford, IL, United States)
Hill, D. G. (Sundstrand Corp. Advanced Technology Group, Rockford, IL, United States)
Ellis, W. (Sundstrand Corp. Rockford, IL, United States)
Marshall, P. (NASA Johnson Space Center Houston, TX, United States)