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Consider a roof of a house of thickness L = 20 cm, thermal conductivity k = 1 W/m K, and emittance of the external surface epsilon= 0.95, which is exposed to a clear night sky while the outside air temperature is T 0 = -5 degree C and the corresponding heat transfer coefficient is 5 W/m2 K. If the inner and outer surface temperatures of the roof are 20 degree C and -9 degree C, estimate the effective sky temperature T sky. If because of a wind the outside convective heat transfer coefficient is increased from 5 to 30 W/m2 K, what would be the new outside surface temperature of the roof when its inner surface temperature remains 20 degree C? What is the corresponding change in heat flux through the roof when the heat transfer coefficient changes from 5 to 30 W/m2 K?
the rigid plate shown in figure was observed to rotate 1.2? from the vertical plane due to the action of the external
Calculate the deflection of the simply supported beam at the center. The material is A36 steel and calculate the deflection of the simply supported beam at the center. The material is A36 steel and the beam is ten feet long.
Two slender rods of negligible weight are pin-connected at A and attached to the 18-lb block B and the 80-lb block C. The coefficient of static friction is 0.55 between all surfaces of contact. Determine the range of values of P for which equilibr..
A long electric wire of radius r0 generates heat at rate of q'''. The surface is maintained at uniform temp of T0. Write heat equation and boundary conditions for steady state one dimensional conduction.
A plane can fly 299 mph in still air. If it can fly 180 miles downwind in the same amount of time it can fly 119 miles upwind, find the velocity of the wind.
Estimate the mass flow rate of fuel into the engine in kg/h.
Prepare a 3-input, 5 bit multiplexer that fits in a 24-pin IC package. Write the truth table and draw a logic diagram and logic symbol for the multiplexer.
a boiling-water-type nuclear fission reactor has shut down the backup pumps have failed and emergency cooling water
in a system a lever needs and effort of 200n to lift a load of 350n. the end of the lever arm moves 50cm and the load
Use cold air properties to find the highest cycle pressure, the specific energy added by combustion, and the mean effective pressure.
Determine the reactions of simply supported beam to both a concentrated and uniform load. A beam with a span of 21 ft is simply supported at the left-hand end and fixed at the right-hand end.
module fea - finite element analysisnbspquestion 2 method to assess the value of your analysis outputnbspa what is the
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