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Consider two-dimensional, steady-state conduction in a square cross section with prescribed surface temperatures
Consider weather conditions for which the prevailing wind blows past the penthouse tower on a tall building. The tower length in the wind direction is 10m
Copper tubing is joined to the absorber of a flat-plate solar collector as shown. The aluminum alloy (2024- T6) absorber plate is 6 mm thick and well insulated
Copper tubes 25 mm in diameter and 0.75 m long are used to boil saturated water at 1 atm.
Copper spheres of 20-mm diameter are quenched by being dropped into a tank of water that is maintained at 280 K.
Cooling water flows through the 25.4-mm-diameter thin-walled tubes of a steam condenser at 1 m/s, and a surface temperature of 350 K is maintained
Consider the radial diffusion of a gaseous species (A) through the wall of a plastic tube (B), and allow for chemical reactions that provide for the depletion
Consider the following fluids at a film temperature of 300 K in parallel flow over a flat plate with velocity of 1 m/s: atmospheric air, water, engine oil
Consider flow in a circular tube within the test section length (between 1 and 2) a constant heat flux q"s is maintained.
Consider flow over a flat plate for which it is desired to determine the average heat transfer coefficient over the short span x1 to x2, h1 - 2 where (x2 - x1)
Consider pressurized water, engine oil (unused), and NaK (22%/78%) flowing in a 20-mm-diameter tube.
Consider conditions for which a fluid with a free stream velocity of V = 1 m/s flows over an evaporating or subliming surface with a characteristic length
Consider cylindrical and spherical shells with inner and outer surfaces at r1 and r2 maintained at uniform temperatures Ts.1 and Ts.2 respectively
Derive an expression for the midpoint temperature T2 in terms of the thermal and geometric parameters of the system.
Consider a thin electrical heater attached to a plate and backed by insulation. Initially, the heater and plate are at the temperature of the ambient air, T8.
Consider a vertical, single-pane window of equivalent width and height (W = L = 1m). The interior surface is exposed to the air and walls of a room
Consider a tube wall of inner and outer radii r; and ro, whose temperatures are maintained at Ti and To, respectively
Consider a thin-walled, metallic tube of length L = 1 m and inside diameter Di = 3 mm. Water enters the tube at m = 0.015 kg/s and Tm.i = 97°C.
Consider atmospheric air at 25°C and a velocity of 25 m/s flowing over both surfaces of a 1-m-long flat plate that is maintained at 125°e.
Consider an opaque horizontal plate that is well insulated on its back side. The irradiation on the plate is 2500 W/m2 of which 500 W/m2 is reflected
Consider an object of characteristic length 0.01 m and a situation for which the temperature difference is 30°C. Evaluating thermo physical properties
Consider a gas-fired boiler in which five coiled thin-walled, copper tubes of 25-mm diameter and 8-m length are submerged in pressurized water at 4.37 bars.
Consider a horizontal, thin-walled circular tube of diameter D = 0.025 m submerged in a container of n-octadecane (paraffin)
Consider a flat plate subject to parallel flow (top and bottom) characterized by U8 = 5 m/s, T8 = 20°C.
Consider a rectangular fin that is used to cool a motorcycle engine. The fin is 0.15 m long and at a temperature of 250°C