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The top surface of a heated compartment consists of very smooth (A) and highly roughened (B) portions, and the surface is placed in an atmospheric airstream
The top surface of a plate, including its grooves, is maintained at a uniform temperature of T, = 200°C.
The window of a large vacuum chamber is fabricated from a material of prescribed spectral characteristics
The wing of an airplane has a polished aluminum skin. At a 1500 m altitude, it absorbs 100 W/m2 by solar radiation
The torque due to the frictional resistance of the oil film between a rotating shaft and its bearing is found to be dependent on the force F normal to the shaft
The thermal pollution problem is associated with discharging warm water from an electrical power plant or from an industrial source to a natural body of water
Thermal imagers have radiation detectors that are sensitive to a spectral region and provide white-black or color images with shading to indicate
The weight of the insulation in a spacecraft may be more important than the space required. Show analytically that the lightest insulation for a plane
The Weather channel reports that it is a hot, muggy day with an air temperature of 90°F, a 10 mph breeze out of the southwest and bright sunshine
The use of rock pile thermal energy storage systems has been considered for solar energy and industrial process heat applications
What factors will contribute to a successful variable pay plan?
The strength and stability of tires may be enhanced by heating both sides of the rubber (k = 0.14 W/m · K. a = 6.35 x 10-8 m2/s) in a steam chamber
The steady-state temperatures (oC) associated with selected nodal points of a two-dimensional system having a thermal conductivity of 1.5 W/m · K
The steady-state temperature distribution in a composite plane wall of three different materials, each of constant thermal conductivity, is shown as follows.
The structural components of modern aircraft are commonly fabricated of high-performance composite materials.
The research group of a glass manufacturer is working on development of a coating that would render glass highly transparent to radiation at wavelengths
The stability criterion for the explicit method requires that the coefficient of the term of the one-dimensional, finite-difference equation be zero or positive
The surface of a 50-mm-diameter, thin-walled tube is maintained at 100°C. In one case air is in cross flow over the tube with a temperature
The maximum surface temperature of the 20-mm. diameter shaft of a motor operating in ambient air al 27°C should not exceed 87°C.
The outer surface of a 0.2m-thick concrete wall is kept at a temperature of -5°C, while the inner surface is kept at 20°C.
The lower side of a 400-mm-diameter disk is heated by an electric furnace, while the upper side is exposed to quiescent, ambient air and surroundings at 300 K.
The presence of a small amount of air may cause a significant reduction in the heat rate to a water-cooled steam condenser surface.
The performance of gas turbine engines may be improved by increasing the tolerance of the turbine blades to hot gases emerging from the combustor
The oil in an engine is cooled by air in a cross-flow heat exchanger where both fluids are unmixed. Atmospheric air enters at 30°C and 0.53 kg/s.
In conventional mold design, straight cooling (heating) passages are bored through the mold in a location where the passages will not interfere with the molded