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Steam at 320oC flows in a stainless steel pipe (k = 15W/m. oC) whose inner and out diameters are 5 cm and 5.5 cm, respectively. The pine is covered with 3-cm-thick glass wool insulation (k = 0.038W/m. oC). Heat is lost to the sur-roundings at 5oC by natural convection and radiation, with a combined natural convection and radiation heat transfer coefficient of 15 W/m2. oC, Takin the heat tranfer coefficient inside the pipe to be 80 W/m2. oC, determine the rate of heat loss from the steam per unit length of the pipe. Also determine the temperature drops across the pipe shell and the insulation.
water flows in a horizontal pipe with entrance velocity 2.5ms is turning 90 degrees and leaves the pipe. pipe diameter
a feed rate of 200gpm of a hydrocarbon mixture at 70c is being pumped from tank at 1 atm abs pressure to a distillation
A mass of 2.5kg are hung vertically from a spring of stifness 5.4kN/m, calculate the maximum amplitude of vibration if the mass is not to jump off the hook.
spherical balloon has a diameter d1 when the pressure of the gas inside is p1 and atmospheric pressure is po. the gas
an electrically driven pump operating at steady state is used to draw water from a pond. at the pump inlet the pressure
The humidity of air can be determined by use of two different thermometers; a 'dry bulb' thermometer and a 'wet bulb' thermometer. explain how these thermometers can be used to estimate the amount of water vapour in the air.
a system has an initial volume of 10 ft3 and expands to a final volume of 20 ft3. the initial pressure is 15 psia. find
for a sensible heater that provides 100000 btuhr and increases the air temperature 35 f determine the volumetric flow
Coefficient Reaction, The removal efficiency of a reactor tank is 73-percent and its residence time is 28.5s
rod oa rotates counterclockwise with a constant angular velocity of u . 5 radgt s. the double collar b is
a circular cylinder of tantalum with an initial diameter of 3.1 mm is fired at a target. during impact the base of the
an insulated piston-cylinder device initially contains 0.3 m3 of carbon dioxide at 200 kpa and 27 oc. an electric
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