Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Ultra-pure hydrogen is required in applications ranging from the manufacturing of semiconductors to powering fuel cells. The crystalline structure of palladium allows only the transfer of atomic hydrogen (H) through its thickness, and therefore palladium membranes are used to filter hydrogen from contaminated streams containing mixtures of hydrogen and other gases. Hydrogen molecules (H2) are first adsorbed onto the palladium's surface and are then dissociated into atoms (H), which subsequently diffuse through the metal. The H atoms recombine on the opposite side of the membrane, forming pure H2. The surface concentration of H takes the form CH = KspH20.5, where Ks ˜ 1.4k mol/m3 · bar 0.5 is known as Sievert's constant. Consider an industrial hydrogen purifier consisting of an array of palladium tubes with one tube end connected to a collector plenum and the other end closed. The tube bank is inserted into a shell. Impure H2 at T = 600 K, p = 15 bars, XH2 = 0.85 is introduced into the shell while pure H2 at p = 6 bars, T = 600 K is extracted through the tubes. Determine the production rate of pure hydrogen (kg/h) for N = 100 tubes which are of inside diameter Di = 1.6 mm, wall thickness t = 75µm, and length L = 80 mm. The mass diffusivity of hydrogen (H) in palladium at 600 K is approximately DAB = 7 x 10-9 m2/s.
steam is contained in a rigid container at an initial pressure of 100 psia and 600 f. the pressure is reduced to 10
a steam power plant operates near a river triver27degc. and uses the river as a temperature reservoir into which it
A heat engine operating on the Carnot cycle has an efficiency of 65%. The waste heat from the cycle is rejected to the atmosphere at 20 deg. C. at a rate of 250 kW. What is the temperature of the heat source driving the engine in deg. C? For the heat..
Draw the block diagram of the uncontrolled seat Plot the open loop displacement response of the uncontrolled seat to a step input
refrigerant 134a is the working fluid in an air? conditioning system used to maintain a room at 24degc with heat
each of the two slender rods is .75m long and has a mass of 6 kg. each rod has a moment of inertia of iml212 about the
a water stream is heated in fully developed flow through a pipe with uniform heat flux at the wall. the flow rate is
Create a segment of a recognizable tune consisting of 5-6 notes, possibly with spaces in between. Search web sources to find the frequencies of familiar music notes (for example the frequency of A4 is 440Hz, of A5 is 880Hz, of C5 is 523.25Hz).
the input to a 12-bit ad converter is vin asin2 omega t 2acos2 omega t and its f 20 khz. find the sampling time
a rigid copper tank initially containing 1 m3 of air at 295 k carrying air at 295 k 15 bar is connected by a valve to a
the jib crane is supported by a pin a c and rod ab. the rod can withstand a maximum tension of 40kn. if the load has a
Nitrogen gas at 65kPa and 7C enters an adiabatic diffuser steadily with a velocity of 210 m/s and leaves at 119kPa and 22C. Determine the exit velocity of the nitrogen. the ratio of the inlet to exit area
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd