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1. Given two rectangular ducts with equal cross-sectional area, but different aspect ratios (width/height) of 2 and 4, which will have the greater frictional losses? Explain your answer. A viscous oil with a specific gravity SG = 0.85 and a viscosity of 0.10 Pa · s flows from tank A to tank B through the six rectangular slots indicated in Fig. P8.68. If the total flowrate is 30 mm3 /s and minor losses are negligible, determine the pressure in tank A.
A house is kept at 22oC in the winter by means of electric heaters. On a cold day, the heaters are on for 18 hours and use an average power of 5 kW. How much power would be saved if a heat pump with a COP of 2.0 was to be used instead?
a chiller is providing 5 tons of cooling to an air handler by cooling water transfer between the two devices. the
a vessel contains 2 litres of gas at a pressure of 300kpa and a temperature of 27c .3 litres of gas at the same
What is the mean molar mass of an ideal gas that has a specific heat ratio (k) of 1.11, and a specific heat at constant pressure of 1.680 kJ/kg K?
a force p acts on a block having a mass of m with the block resting on a rough incline. the coecients of static and
Superheated steam in a piston-cylinder device is initially at 200 °C, 600 kPa. Heat is removed from the system during an isobaric process until half of the mass condenses to saturated liquid
electrically heated draw batch furnaces are commonly used in the heat treatment industry. consider a draw batch furnace
Coefficient Reaction, The removal efficiency of a reactor tank is 73-percent and its residence time is 28.5s
consider a piston-cylinder assembly containing 0.14 kg of air initially at a pressure of 350 kpa. heat is added during
A force of 300 lbf is applied to the piston of a cylinder, compressing the gas within the cylinder. The piston has a radius on 15 in. If the local atmospheric pressure is 0.98 atm, what is the absolute pressure inside the cylinder in psi
Using centerline dimensions, calculate the maximum shear stress σmax in the web of the beam.
the ocean thermal energy conversion otec power plant takes advantage of the temperature difference between ocean
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