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A humidifier consists of a bundle of vertical tubes, each of 20-mm diameter, through which dry atmospheric air is in fully developed flow at 10-3 kg/s and 298 K. The inner tube surface is wetted with a water film. Determine the tube length required for the water vapor to reach 99% of saturation. What is the rate at which energy must be supplied to each tube to maintain its temperature at 298 K?
a reversible heat pump cycle operates between hot and cold reservoirs at th 27degc and tc -3degc respectively.
suppose 2.00 m3 of air which is considered an ideal gas is initially at a pressure of 101.3 kpa and a temperature of
Air enters a 0.6 m diameter fan at 16 deg C, 101 kPa, and is discharged at 18 deg C, 105 kPa, with a volumetric flow rate of 0.35 m^3/s.
ocean temperature energy conversion otec power plants generate power by utilizing the naturally occurring decrease with
a particle travels along a straight line such that in 2 s it moves from an initial position sa 0.5m to a position sb
a hand drill is used to drill a holbein a very hard material. because the bit is very dull it spins with out advancing.
We wish to design an automatic speed control for an automobile. Assuming that pure integral control (that is, no proportional term) is advantageous; select the feedback gain so that the roots have critical damping (? = 1).
a horizontal pipe has an abrupt expansion from d1 8 cm to d2 16 cm. the water velocity in thenbspsmaller pipe is 15
The shape of this stress-strain diagram is shown in the figure. The bar is axially loaded by tensile forces P = 20 kN, after which the loads are removed. What is the permanent set of the bar?
a block weighing 10 lbf and having dimensions 10 in. on each edge is pulled up an inclined surface on which there is a
Determine all reactions and draw the shear and moment diagrams, locating points of inflection and labeling values of maximum shear and moment in each span. Given: EI is constant.
Construction technique critical review:Students will be required to formulate a 1,500 word report (4 pages completed individually according to provided template) examining a particular advanced construction method, technology or technique.
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