Thermodynamics 5-169 A small positioning control rocket in a satellite is driven by a 2-ft3

Thermodynamics 5-169E

A small positioning control rocket in a satellite is driven by a 2-ft3 container filled with R-134a at –10°F. Upon launch, the container is completely filled with saturated liquid R-134a. The rocket is designed for short bursts of 5-s duration. During each burst, the mass flow rate leaving the rocket is 0.05 lbm/s. How many such bursts can this rocket experience before the quality in the container is 90 percent or more, presuming that the temperature of the container contents is maintained at
–10°F?


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