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A heat pump (see Problem 5.49) should upgrade 5 MW of heat at 85?C to heat delivered at 150?C. For a reversible heat pump, what are the fluxes of entropy into and out of the heat pump?
Problem 5.49
A large heat pump should upgrade 4 MW of heat at 65?C to be delivered as heat at 145?C. What is the minimum amount of work (power) input that will drive this?
What is the maximum pressure on the form in PSF?
Compute the magnitude of the pressure at which the cylinder burst.
A 6 lane highway has 12 ft lanes and a crown cross-slope of 0.02 ft/ft. The design speed of the road is 60 mph. The station of the PC is 20+00. Determine the station of the point where th superelevation runoff begins
find the percentage error over the band in making this approximation.
Determine the projected component of the force fac along the axis of strut ao. Express the result as a cartesian vector.
The hydraulic cylinder gives pin A a constant velocity v = 2 m/s long its axis for an interval of motion and, in turn, causes the slotted arm to rotate about O.
Discuss the changes in moisture content and the effects of these changes on a piece of dimension lumber from the time the tree is cut, through its processing, and until it has been in service in a building for an entire year
a level test track has a coefficient of road adhesion of 0.80, and a car being tested has a coefficient of rolling friction that is approximated as 0.018 for all speeds. the vehicle is tested unloaded and achieves the theoretical minimum stop in 1..
assume a future where security countermeasures against dos attacks are much more widely implemented than at present. in
a. Determine the shear and moment diagram. b. Calculate the maximum normal stress on the top of the beam, on the bottom of the beam and indicate in terms of x its location.
design a horizontal curve for a two-lane road. The road has 12-ft. lanes. Due to expansive excavation, it is determined that a maximum of 34 ft. can be cleared from the road's centerline toward the inside lane to provide for stopping sight distanc..
plane gate of uniform thickness holds back a depth of water. Find the minimum weight need to keep the gate closed. theta=30degrees L = 3m w = 2m
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