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A one dimensional wall of material (Kw=10w/mk) is 50 mm thick with uniform heat generation q‘‘‘=5*10^6w/m^3. The left side is exposed to a fluid hl=500w/m^2k at 20 degree Celsius. The right side has a 10mm thick plate attached that has no heat generation (Kp=15w/wk). The right side of the plate is exposed to a fluid hr=1000w/m^2k at 30 degree Celsius. What are the temperature on the left edge of the wall, the maximum temperature in the wall, and the heat flux q'' in kw/m^2 going through the right side of the plate?
Calculate the yield stress of the material and the force required to produce yield - determine the bulk modulus of the material.
A thin-walled concentric tube heat exchanger is used to cool engine oil from 175 °C to 55 °C with water that is available at 27 °C acting as a coolant. The oil and water flow rates are each 2.5 kg/s and the diameter of the inner tube is 0.7 m with a ..
At steady state, a heat pump driven by an electric motor maintains the interior of a building at Th=293 K. The rate of heat transfer, in kJ/h, from the building through its walls and roof is given by 8000 (Th-Tc), where Tc is the outdoor temperature...
eight maintenance activities their normal durations in weeks and the crew sizes for the normal condition are as
Consider a piston-cylinder assembly containing 10kg of water. Initially the gas has pressure of 20 bar and occupies a volume of1.0 m3. Under these conditions, water does not behave as an ideal gas. System now undergoes a reversible process in which i..
major league baseball training camps are now just beginning. given a baseball with a mass of 9 ounces estimate the work
a geothermal vapor compression heat pump maintains the inside air supply of a building at 30 degc and operates with the
rod ab consists of two cylindrical portions ac and bc eac with a cross sectional area of 1750mm2. portion ac is made of
a car is to be hoisted by elevator to the fourth floor of a parking garage which is 48 ft above the ground. if the
determine the number of kmols of carbon monoxide contained in a 0.27 m3 compressed gas cylinder at 200psi and 72f.
A crystal has an fcc crystal structure. If a force (load) is applied along the [001] direction of the crystal, and the crystal has a yield strength of 50 MPa, what is the critical resolved shear stress of this crystal
for the ideal air standard diesel cycle with a volumetric compression ratio of 17 1 calculate the efficiencies for
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