A System for Venting a Propellant Tank in the Absence of Gravity
In a low-gravity environment, the containment of a boiling liquid is complicated by the lack of positive control of the positions of the liquid and gas phases. The generated vapor must be vented to control the tank pressure. A system is necessary, therefore, to extract this vapor and two methods to accomplish this have been proposed: (1) Centrifugal separation of a two-phase mixture extracted from an arbitrary position within the vessel, and (2) Suppressing vapor generation within the vessel by absorbing the heat load in an open-loop refrigeration system which uses liquid extracted from the tank for its working fluid. The second method is the subject of this paper.
KeywordsHeat Transfer Coefficient Heat Exchanger Heat Load Tank Wall Throttle Valve
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- 1.E. R. G. Eckert and R. M. Drake, Heat and Mass Transfer, 2nd ed., McGraw-Hill Book Company, New York (1959).Google Scholar