A long, 2-cm-OD horizontal copper pipe carries dry saturated steam at 1.2 atm absolute pressure. The pipe
Question:
A long, 2-cm-OD horizontal copper pipe carries dry saturated steam at 1.2 atm absolute pressure. The pipe is contained within an environmental testing chamber in which the ambient air pressure can be adjusted from 0.5 to 2.0 atm, absolute while the ambient air temperature is held constant at 20?C. What is the effect of this pressure change on the rate of condensate flow per meter length of pipe? Assume that the pressure change does not affect the absolute viscosity, thermal conductivity, or specific heat of the air.GIVENA long horizontal copper pipe carrying saturated steam within an environmental testing chamberOutside diameter (D) = 2 cm = 0.02 mSteam pressure = 1.2 atmAmbient pressure range (P) = 0.5 to 2 atmAmbient air temperature (T??) = 20?CASSUMPTIONSPressure change has no effect on absolute viscosity, thermal conductivity, or specific heat of the airAir is stillChamber temperature is held constant while pressure is changedConvective thermal resistance on the inside of the pipe is negligibleThermal resistance of the copper pipe is negligibleThe air behaves as an idealgas
Step by Step Answer:
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn