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A thin circular disk is subjected to induction heating from a coil the effect of which is to provide a uniform heat generation within a ring section as shown.
Air flows over the top and bottom surfaces of the plate, and measurement of the heat transfer rate is 2000 W. What is the drag force on the plate?
A thin rod of diameter D is initially in equilibrium with its surroundings, a large vacuum enclosure at temperature Tsur
A thin flat plate of length L, thickness t, and width W > L is thermally joined to two large heat sinks that are maintained at a temperature To.
A thin, flat plate that is 0.2 m by 0.2 m on a side is oriented parallel to an atmospheric airstream having a velocity of 40 m/s.
A thin metallic wire of thermal conductivity k, diameter D, and length 2L is annealed by passing an electrical current through the wire to induce a uniform
A thin electrical heater is wrapped around the outer surface of a long cylindrical tube whose inner surface is maintained at a temperature of 5°C.
A thick oak wall, initially at 25°C, is suddenly exposed to combustion products for which T8 = 800°C and h=20W/m2 · K.
A steel strip of thickness 8 = 12 mm is annealed by passing it through a large furnace whose walls are maintained at a temperature
A steam pipe 200 mm in diameter passes through a large basement room. The temperature of the pipe wall is 500°C, while that of the ambient air
A steady-state, finite-difference analysis has been performed on a cylindrical fin with a diameter of 12 mm and a thermal conductivity of 15 W/m · K.
A standard 4 in. steel pipe (ID = 4.026 in., OD = 4.500 in.) carries superheated steam at 1200°F in an enclosed space where a fire hazard exists
A successful California engineer has installed a circular hot tub in his back yard and finds that for the typical operating conditions prescribed below
A straight fin of uniform cross section is fabricated from a material of thermal conductivity 50 W/m. K, thickness w = 6 mm, and length L = 48 mm
A straight fin fabricated from 2024 aluminum alloy (k = 185 W/m · K) has a base thickness of t = 3 mm and a length of L = 15 mm
A steel tube (k = 50 W/m · K) of inner and outer diameters Di = 20 mm and Do = 26 mm. respectively, is used to transfer heat from hot gases flowing
A steel billet is to be heat treated by immersion in a molten salt bath. The billet is 5 cm square and 1 m long.
A steam generator consists of a bank of stainless steel (k = 15 W/m · K) tubes having the core configuration of figure and an inner diameter of 13.8 mm.
A steam pipe of 0.12-m outside diameter is insulated with a layer of calcium silicate.
A spherical thermocouple junction 1.0 mm in diameter is inserted in a combustion chamber to measure the temperature T8 of the products of combustion.
A square silicone chip 7 mm by 7 mm in size and 0.5 mm thick is mounted on a plastic substrate with its front surface cooled by a synthetic liquid
A spherical drop of water, 0.5 mm in diameter, is falling at a velocity of 2.15 m/s through dry still air at l-atm pressure. Estimate the instantaneous rate
A spherical vessel used as a reactor for producing pharmaceuticals has a 5-mm-thick stainless steel wall (k = 17 W/m · K) and an inner diameter of D j = 1.0 m.
A spherical tank of 3-m diameter contains a liquefied petroleum gas at -60°C. Insulation with a thermal conductivity of 0.06 W/m. K and thickness 250 mm
A spherical tank for storing liquid oxygen on the space shuttle is to be made from stainless steel of 0.80-m outer diameter and 5-mm wall thickness