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A heat recovery device involves transferring energy from the hot flue gases passing through an annular region to pressurized water flowing through the inner tube of the annulus. The inner tube has inner and outer diameters of 24 and 30 mm and is connected by eight struts to an insulated outer tube of 60-mm diameter. Each strut is 3 mm thick and is integrally fabricated with the inner tube from carbon steel (k = 50 W/m · K). Consider conditions for which water at 300 K flows through the inner tube at 0.161 kg/s while flue gases at 800 K flow through the annulus, maintaining a convection coefficient of 100 W/m2 · K on both the struts and the outer surface of the inner tube. What is the rate of heat transfer per unit length of tube from gas to the water?
the piston is initially resting on the stops . the cylinder contains carbon dioxide at 50 psia and 200 f and takes up 1
The odd parity bit for all data received since the circuit was reset. This output should be 0 the clock cycle after a reset since no zeroes or ones have been received by the circuit at that point.
Derive an expression for the bounding energy Eo in terms of the equilibrium interionic separation ro and the constants D, and p using the following procedure
part 1 - energy in the home personal energy use and home energy efficiency.estimate your personal annual energy usage
Describe the differences among the three PLC types : rack/slot address based, tag based, and soft PLCDescribe the differences among the three PLC types : rack/slot address based, tag based, and soft PLC.
You have a large pin made from aluminum with a diameter of 0.01 m. This pin is needed to hold something from the ceiling. You install the pin into a hole of diameter 0.01 m in a piece of tungsten; assume a "perfect press fit". It was very hot, 323K, ..
A piston-cylinder device contains 0.005 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 600 kPa. Heat is transferred at constant pressure until the temperature reaches 200°C.
the rocker of a crank-rocker linkage is to have a length of 500mm and swing through a total angle of 45 degrees with a
14 kgs of liquid water enters a pump at a velocity of 1 ms and at 1 atm pressure. it leaves the pump at a velocity of
water at 1.5 mpa 150degc is throttled adiabatically through a valve to 200 kpa. the inlet velocity is 5 ms and the
a system has an initial volume of 10 ft3 and expands to a final volume of 20 ft3. the initial pressure is 14.7 psi.
A water bed is 2 m on a side and 30 cm deep. Estimate its weight. Find the pressure exerted on the floor when the bed rests in its normal position. Assume that the entire lower surface of the bed makes contact with the floor. Calculate the pressure e..
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