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Air at 300 K and a flow rate of 3 kg/h passes upward through a 30-mm tube, as shown in the sketch. A thin film of water, also at 300 K, slowly falls
Air at a free stream temperature of T8 = 20°C is in parallel flow over a flat plate of length L = 5 m and temperature Ts = 90°C
Air at 25°C flows over a 10-mm-diameter sphere with a velocity of 25 m/s, while the surface of the sphere is maintained at 75°C
Air at 200 kPa enters a 2-m-Iong, thin-walled tube of 25-mm diameter at 150°C and 6 m/s Steam at 20 bars condenses on the outer surface.
Aluminum fins of triangular profile are attached to a plane wall whose surface temperature is 250°C. The fin base thickness is 2 mm, and its length is 6 mm.
A two-dimensional rectangular plate is subjected to the boundary conditions shown. Derive an expression for the steady-state temperature distribution T(x, y).
A vertical array of circuit boards of 150-mm height is to be air cooled such that the board temperature does not exceed 60°C
According to its directional distribution, solar radiation incident on the earth's surface may be divided into two components.
A water bath is used to maintain canisters containing experimental biological reactions at a uniform temperature of 37°C.
A very long rod of 5-mm diameter and uniform thermal conductivity k = 25 W/m. K is subjected to a heat treatment process
A wall 0.12 m thick having a thermal diffusivity of 1.5 x 10-6 m2/s is initially at a uniform temperature of 85°C.
A very thick slab with thermal diffusivity 5.6 x 10-6 m2/s and thermal conductivity 20 W/m · K is initially at a uniform temperature of 325°C.
Advances in very large scale integration (VLSI) of electronic devices on a chip are often restricted by the ability to cool the chip
According to experimental results for parallel airflow over a uniform temperature, heated vertical plate, the effect of free convection on the heat transfer
A wet-bulb thermometer consists of a mercury-in-glass thermometer covered with a wetted (water) fabric.
A thin-walled container with a hot process fluid at 50°C is placed in a quiescent, cold water bath at 100C. Heat transfer at the inner and outer surfaces
A tile-iron consists of a massive plate maintained at 150°C by an imbedded electrical heater. The iron is placed in contact with a tile to soften the adhesive
A thin-walled tube of 20-mm diameter passes hot fluid at a mean temperature of 45°C in an experimental flow loop.
A tool used for fabricating semiconductor devices consists of a chuck (thick metallic, cylindrical disk) onto which a very thin silicon wafer
A two-dimensional rectangular plate is subjected to prescribed temperature boundary conditions on three sides and a uniform heat flux inthe plate
A turbine blade 5-cm long, with cross-sectional area A = 4.5 cm2 and perimeter P = 12 cm, is made of a high-alloy steel [k = 25 W/(m K)].
A tubular heater with a black inner surface of uniform temperature Ts = 1000 K irradiates a coaxial disk.
A tube of diameter 50 mm having a surface temperature of 85°C is embedded in the center plane of a concrete slab 0.1 m thick with upper and lower surfaces
A thin-walled tube with a diameter of 6 mm and length of 20 m is used to carry exhaust gas from a smoke stack to the laboratory in a nearby building
A tube bank uses an aligned arrangement of 10-mm-diameter tubes with ST = SL = 20 mm. There are 10 rows of tubes with 50 tubes in each row.