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Consider a 1.5m high and 2.4m wide double-pane window consisting of two 3mm thick layers of glass ( k = 0.78 W/m.K ) separated by a 12mm wide stagnant air space ( k = 0.026 W/m.K ). Determine the steady state rate of heat transfer through this double-pane window and the temperature of its inner surface for a day during which the room is maintained at 21C while the temperature of the outdoor is -5C . Take the convection heat transfer coefficients on the inner and outer surface of the window to be h1 = 10W/m2.K and h2 = 25W/m2.K.
solve the following problem by showing all work answers in parenthesis steam enters a diffuser at 20 paia and 240degf
two bars one having a circular section of radius b the other an elliptic section with semiaxes ab.for equal angles of
a particle is launched with a horizontal velocity v0 0.55 ms from the 30 degree position shown and then slides without
a rigid tank contains 20 lbm of air at 20 psia and 70degf. more air is added to thenbsptank until the pressure and
the automobile shown has 1200kg mass with center of gravity at point g and all wheel have the same 0.34m radius if the
A small droplet of liquid detergent, falling through air in a spray drying tower, has its diameter reduced as water evaporates from the surface. If we assume that the temperature of the liquid within the drop remains at 290 K and the dry air is at..
You are invited as an engineer to perform a study for a newly built community to cover their power need of 30 MW.
consider a conical pendulum that is a ball of mass m at the end of a string of length li moving in a horizontal circle
If the bar is subjected to centric forces of magnitude P = 30 kN and knowing that EA = 70 GPa and EB = 105 GPa, determine the normal stress (a) in the aluminum layers, (b) in the brass layer.
Knowing that the pipe has inner and outer dimensions equal to 35 and 42 mm, respectively, detemine the normal and shearing stresses at point a and point b.
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.
Determine the required length L of each splice if a factor of safety is 2.75.
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