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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?
calculate the ratio of the area to volume for unit cube,a unit sphare inscribed inside the cube,and as right cylinder inscribed inside the cube.
Determine the force in member AB Determine the force in member AE Determine the force in member BC Determine the force in member BE Determine the force in member CD
calculate the height of the sight rails in metres at A, B, C, D and E, if a 3-m boning rod is to be used.Briefly discuss the techniques and advantages of using laser beams for the control of more precise work.
A coal-burning steam power plant produces a net power of 300 MW with an overall thermal efficiency of 32 percent. The actual gravimetric air-fuel ratio in the furnace is calculated to be 12 kg air/kg fuel.
question 1as an estimator in a construction firm you have been instructed to include only the costs relating to labour
The service live load is three times the dead load. The 4-in leg contains a single line of 7/8 inch diameter bolts, and the 6 inch leg contains a double gage line of 7/8 inch diameter bolts.
Write the mass balance equation for a completely mixed lake with an impulse input of mass, M, added at time t = 0. Assume the lake is of constant volume, V, with continuous outflow, Q, and a conservative substance.
Plot the relationship between the approach speed v and thelength of the dilemma zone for the following data:a2 = 0.5g, δ2 = 1.0s,w = 65ft, L = 15ft, and τ = 4.5s (wherea2 is the acceleration
a. Describe the modes of formation for the three basic categories of naturally occurring rocks. Name three rocks form each category. b. Explain how the formation process affects how rocks are described and classified in engineering terms.
An existing high-way railway at-grade crossing is being redesigned as a grade seperated to improve traffic operations. the railway must remain at the same elevation. the highway is being reconstructed to travel under the railway.
A circular hatch, 2-m in diameter has its top 10-feet under water ( fresh water s.g. = 1.0), and is hinged on the bottom, and held closed on the top with a single bolt. Perform a moment balance about the hinge to calculate the force that the bolt mus..
For the simple curve with an arc length of 1090.83 feet and a tangent of 606.81 feet, if the station of the PI is 24+57.00, what are the stations of the PC and the PT?
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