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Consider a 300 mm x 300 mm window in an aircraft. For a temperature difference of 80oC from the inner to the outer surface of the window, calculate the heat loss through a 10 mm think polycarbonate, soda lime glass, and aerogel windows respectively. The thermal conductivity of aerogel and polycarbonate are kag=0.014W/mK and kpc=0.21 W/mK . Evaluate the thermal conductivity of the soda lime glass at 300 K. If the aircraft has 130 windows and it costs $1/kWh to heat the cabin, compare the costs associated with the heat loss through the windows for an 8 hour flight.
How can be determined the dynamic parameters of a second order system, wiht an Inertia (M), a dampening coeficient ( C ) and a Stiffness constant ( K).
Write the electron configuration of the following ions by using spdf notation.
consider a container of volume 250ml that is divided into two compartments of equalnbspsize. in the left compartment
for the following cross sectiondetermine the coordinates x and y of the centroid c of the area shown in the
A paper clip is made of wire 0.7 mm in diameter. If the original material from which the wire is made is a rod 25 mm in diameter, calculate the longitudinal engineering strain and true strain that the wire has undergone during processing.
Why is it appropriate to take velocity measurements at several diameters downstream of the fan?
suppose that you have a basin of 35c warm water that you use to run a heat engine that cools its substance with air at
a 2-kw iron is left on the ironing board with its base exposed to the air at 25 degc. if the surface temperature is 500
Air enters an adiabatic compressor at 0.1 kg/s, 100 kPa, 25 °C and exits at 700 kPa. (a) Draw a schematic of the system. Determine (b) the minimum power input (kW) and (c) the entropy generation rate (kW/K)
a shrink fit assembly is to be performed on a pin and collar. with the starting dia. being 0.875 the pin needs to be
sun a 5800 k transfers heat to earth at an average rate of 1360 w per m2 of surface area of earth. the earth has a
calculate the work necessary to compress air in an isolated cylinder with initial and final volumes of 6.0 and 1.2 ft3
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