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Compute the delivered heating cost ($/MMBtu) for coalfired heating units (i.e., furnace, boiler) based upon a heating value of 18 100 000 Btu/ton and a cost of $150/ton.
a. For an older, low-efficiency unit with a seasonal efficiency of 65%.
b. For a modern, middle-efficiency unit with a seasonal efficiency of 80%.
1. how much pressure is required for a force output of 62275 newtons if the effective piston area of the cylinder is
helium in a steel tank is at 40 psia 540 r with a volume of 4 ft3. it is used to fill a balloon. when the tank pressure
Using constant specific heat method
During the flow, the pressure at the pipe inlet and exit is measured to be 8.25 bar and 0.97 bar, respectively and determine the flow rate of oil through the pipe assuming the pipe is horizontal.
A trapezoid is submerged in water so that its flat surface is perpendicular to the free surface and shorter leg is 0.4m below the free surface as shown in Figure. Length of the shorter leg is 1.6m and longer leg is 2.8m. Height of the trapezoid is 1...
what happens if a positive edge dislocation meets a negative edge dislocation on the same slip plane with a parallel
1. compare liquids and gases with regard to theirbull shapebull volume occupiedbull densitybull viscositybull
Plot the inertance transfer function's magnitude and phase for this system.
there is 0.7kg of nitrogen in a piston-cylinder device. initially the nitrogen is at 110kpa and 25 celcius and then it
a system consists of nitrogen n2 in a piston-cylinder assembly initially at p1 20 lbfin2 and occupying a volume of
1.find an example of a feedback control system from suggested textbooks. some of the examples can be given belowbulldc
air flows through a converging adiabatic duct with no loss. the temperature at the inlet is 400 k. at the outlet the
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