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Hydrogen at a pressure of 2 atm flows within a tube of diameter 40 mm and wall thickness 0.5 mm. The outer surface is exposed to a gas stream for which the hydrogen partial pressure is 0.1 atm. The mass diffusivity and solubility of hydrogen in the tube material are 1.8 x 10-11 m2/s and 160kmol/m3 atm. respectively. When the system is at 500 K, what is the rate of hydrogen transfer through the tube per unit length (kg/s · m)?
a compressor operating adiabatically is to compress 2.83 m3min of air at 29.4 c and 102.7 knm2 to 311.6 knm2. calculate
Calculate the specific enthalpy at the compressor outlet. Include in your calculations the changes in kinetic and potential energy.
while trapped in a cylinder 2.27 kg of air is compressed isothermally with a water jacket being used around the
Find the average error probability for the decision rule in (a) if Pr(X = -1)=1/4 and Pr(X=1) = 3/4.
calculate the power required to drive a steady-flow compressor if air flowing at a rate of 1kgs enters at 100kpa
water enters a steam generator as compressed liquid at 100 c 6mpa and exits as superheated vapor at 500 c 6mpa constant
a copper-nickel alloy of composition 60 wt ni-40 wt cu is slowly heated from a temperature of 1000degc 2370degf. what
the structure of a house is such that it loses heat at a rate of 5400 kjh per degree celcius difference between the
a 12-kg solid whose specific heat is 2.8 kjkg degree c is at a uniform temperature of -10 degree c. for an environment
If the district heating system should supply hot water at 900C, what is the lowest possible condenser pressure with water as the working sub-stance?
A specimen of Aluminium having a rectangular cross section 10 mm x 12.7 mm is pulled in tension with 25,500 N force, producing only elastic deformation. Calculate the resulting strain.
a what is the total volume of air drawn into the three cylinders each time the engine executes one revolution?b what is
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