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a novel process has been proposed to create a composite palladium tube for use as a hydrogen separation membrane in
a platinum catalytic reactor in an automobile is used to convert carbon monoxide to carbon dioxide in an oxidation
1 helium gas at 25degc and 4 bars is contained in a glass cylinder of 100-mm inside diameter and 5-mm thick- ness what
1 oxygen gas is maintained at pressures of 2 bars and 1 bar on opposite sides of a rubber membrane that is 05 mm thick
a spherical droplet of liquid a and radius ro evapo- rates into a stagnant layer of gas b derive an expres- sion for
consider air in a closed cylindrical container with its axis vertical and with opposite ends maintained at dif- ferent
a 100-mm-long hollow iron cylinder is exposed to a 1000degc carburizing gas a mixture of co and co2 at its inner and
transdermal drug delivery involves the controlled time-release of medication through the skin to the bloodstream
applying high-emissivity paints to radiating surfaces is a common technique used to enhance heat transfer by radiationa
a row of regularly spaced cylindrical heating ele- ments 1 is used to cure a surface coating that is applied to a large
boiler tubes exposed to the products of coal combustion in a power plant are subject to fouling by the ash min- eral
a tool for processing silicon wafers is housed within a vacuum chamber whose walls are black and maintained by a
two convex objects are inside a large vacuum enclo- sure whose walls are maintained at t3 300 k the objects have the
1 consider two large diffuse gray parallel surfaces separated by a small distance if the surface emissivi- ties are 08
1 a very long electrical conductor 10 mm in diameter is concentric with a cooled cylindrical tube 50 mm in diameter
two concentric spheres of diameter d1 08 m and d2 12 m are separated by an air space and have surface temperatures of
an electronic device dissipating 50 w is attached to the inner surface of an isothermal cubical container that is 120
a charge-coupled device ccd infrared imaging sys- tem see problem 1285 operates in a manner similar to a digital video
a wet towel hangs on a clothes line under conditions for which one surface receives solar irradiation of gs 900 wm2
a solar panel mounted on a spacecraft has an area of 1 m2 and a solar-to-electrical power conversion effi- ciency of 12
it is known that on clear nights a thin layer of water on the ground will freeze before the air temperature drops below
the spectral absorptivity of aluminum coated with a thin layer of silicon dioxide may be approximated as aa1 098 for a
a spherical capsule of 3-m radius is fired from a space platform in earth orbit such that it travels toward the center
consider the spherical satellite of problem 12130 instead of the entire satellite being coated with a material that is
a spherical satellite of diameter d is in orbit about the earth and is coated with a diffuse material for which the