Low gravity quenching of hot tubes with cryogensAn experimental proceedure for examining flow boiling in low gravity environment is presented. The proceedure involves both ground based and KC-135 flight experiments. Two experimental apparati were employed, one for studying subcooled liquid boiling and another for examining saturated liquid boiling. For the saturated flow experiments, liquid nitrogen was used while freon 113 was used for the subcooled flow experiments. The boiling phenomenon was investigated in both cases using flow visualization techniques as well as tube wall temperature measurements. The flow field in both cases was established by injecting cold liquid in a heated tube whose temperature was set above the saturation values. The tubes were both vertically and horizontally supported with the liquid injected from the lower end of the tube. The results indicate substantial differences in the flow patterns established during boiling between the ground based, (1-g), experiments and the flight experiments, (low-g). These differences in the flow patterns will be discussed and some explanations will be offered.
Document ID
19950062129
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Antar, Basil N. (The Univ. of Tennessee Space Inst., Tullahoma, TN, US, United States)
Collins, Frank G. (The Univ. of Tennessee Space Inst., Tullahoma, TN, US, United States)
Kawaji, M. (The Univ. of Toronto, Toronto, Ontario, Canada)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publisher: The Univ. of Tennessee Space Inst. (SECTAM, Vol. 16)