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1.A heat pump that operates on the ideal vapor compression cycle with refrigerant 134a is used to heat water from 16 to 56 degrees Celsius at a rate of 0.20kg/s. The condensor and evaporator pressures are 1.5 and 0.35 Mpa, respectively. Determine the power input into the heat pump.
2.A w21 X 101 is used as a compression member with one end fixed and the other end free. The length is 10 feet. What is the nominal strength if Fy=50 ksi? Note that this is a slender-element compression member, and the equations of AISC section E7 must be used.
Would a 30 slot stainless steel screen (2.0 m long; located at the bottom of the well) have sufficient collapse strength for this application?
Find the nominal flexural strength from part (d.) to the service capacity from part (c.). e.) Compute the ratio of the flexural strength from part (d) to the service capacity from part (c).
If the porosity of a core sample is 26 percent, the pore volume is7.7 cc, what is the length of the core in inchesif the diameter is 1.5 inches?
Which process requires more energy: completely vaporizing 1 kg of saturated liquid water at 1 atm pressure or completely vaporizing 1 kg of saturated liquid water at 8 atm pressure?
The steel rails of a continuous, straight railroad track are each 60 ft long and are laid with spaces between their ends of 0.25 inches at 70 degrees F. At what temperature will the rails touch end to end
a) determine by direct integration the polar moment of inertia of the semiannular area shown with respect to point O b) Using the result of part a, determine the moments of inertia of the given area with respect to the x and y axes
The plant currently has one CMFR for removal of chromium. How many more identical reactors does the sony music company require to meet the regulatory requirements for chromium discharge of 0.01 mg/L into the Pitman Sewer?
A 600 MW power plant has an efficiency of 36 percent with 15 percent of the waste heat being released to the atmosphere as stack heat and the other 85 percent taken away in the cooling water. Instead of drawing water from a river, heating it, and ret..
a 20 mgd wastewater treatment plants primary clarifier influent has 800 mg/l solids. the clarifier removes 18 percent of the solids. the sludge flow rate is 0.070 MGD. (a) what is the solids concentration of primary clarifier sludge
A galvanized (zinc-coated) steel sheet is found to uniformly corrode with an average current density of 1.4 X 10-7 A/cm2. How many years will it take to uniformly corrode a thickness of 0.030 mm of the zinc coating
A 110 f t long, 5 in in diameter (f = 0:033) connects two reservoir whose water surface elevations differ by 12 f t. Compute flow rate in pipe.
Assume the settling tank behaves like an ideal sedimentation tank, what percentage of removal should be expected for particles with a settling velocity of 0.002 m/sec
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