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An electrical heater in the form of a horizontal disk of 400-mm diameter is used to heat the bottom of a tank filled with engine oil at a temperature of 5°C. Calculate the power required to maintain the heater surface temperature at 70°C.
Saturated liquid water at 25 degrees C is pumped to a pressure of 5 MPa in an isothermal process. The specific work required by the pump to pressurize the water to 5 MPa can be found as the change in enthalpy of the water from the inlet pressure to t..
The zone temperature thermostat setting is 77 F, which is within the summer comfort zone. The bypass factor for the coil is 0.175 and the chilled water temperature is 50 F.
a group of students is developing a plan to deliver water from a lake to a downhill village. the students plan to use a
Answer the following true or false. Explain. (a) A refrigerant at an absolute pressure of 0.8 atm is at a gage pressure of 0.2 atm.
Determine the heating rate delivered by the 10 thermosyphons when boiling occurs at 25% of the CHF. What are the mean temperatures of the boiling and condensing sections?
Investigate on the Web the advantages and disadvantages of using a double-acting hammer (air or steam) to drive piles. - Why are leads used when driving piles?
as shown in the figure steam at 1200 psia 825degf enters a turbine operating at steady state with a volumetric flow
suppose that you want to design a bumper that will bring a 20-lb package moving at 10 fts to rest at 6 inches from the
the data listed below are claimed for a power cycle operating between hot and cold reservoirs at 1000 k and 300 k
Design a wide flange, simply supported beam below so that the stress due to bending does not exceed that allowed by AISC for A36 steel and calculate the shear stress where the parts join as indicated. Maximum V = 10,000 lb.
A machine weighing 3.5 kg vibrates in a viscous medium. A harmonic exciting force of 40 N acts on the machine and produces resonant amplitude of 18 mm with a period of 0.2 s. Determine the damping coefficient.
What is a 90 percent confidence interval for the standard deviation of the thickness of a washer produced by this procedure?
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