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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 steel bar, 20 mm in diameter and 200 mm long, with an emissivity of 0.9, is removed from a furnace at 455°C and suddenly submerged horizontally
A spherical satellite of diameter D is in orbit about the earth and is coated with a diffuse material for which the spectral absorptivity is a = 0.6 for A < 3
A spherical shell satellite (3-m-OD, 1.25-cm-wall thickness, made of stainless steel) reenters the atmosphere from outer space
A spherical stainless steel vessel at 93°C contains 45 kg of water initially at the same temperature. If the entire system is suddenly immersed in ice water
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 cryosurgical probe may be imbedded in diseased tissue for the purpose of freezing, and thereby destroying, the tissue.
A spherical work piece of pure copper with a diameter of 15 mm and an emissivity of 0.5 is suspended in a large furnace with walls at a uniform temperature
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
A spherical droplet of alcohol, 0.5 mm in diameter, is falling freely through quiescent air at a velocity of 1.8 m/s.
A stainless steel (AISI 304) tube used to transport a chilled pharmaceutical has an inner diameter of 36 mm and a wall thickness of 2 mm
A square plate of pure aluminum 0.5 m on a side and 16 mm thick is initially at 300°C and is suspended in a large chamber.
A square aluminum plate 5 mm thick and 200 mm on a side is heated while vertically suspended in quiescent air at 40°C.
A square (10 mm x 10 mm) silicon chip is insulated on one side and cooled on the opposite side by atmospheric air in parallel flow at U8 = 20 m/s
A small radiant source A1 emits diffusely with an intensity I1 = 1.2 x 105 W/m2 · sr. The radiation detector A2 is aligned normal to the source at a distance
A small dam, which may be idealized by a large slab 1.2 m thick, is to be completely poured in a short period of time. The hydration of the concrete results
A small disk of diameter D1 = 50 mm and emissivity e1 = 0.6 is maintained at a temperature of T1 = 900 K. The disk is covered with a hemispherical radiation
A solar collector consists of a long duct through which air is blown; its cross section forms an equilateral triangle 1 m on a side.
A solar collector consists of a parallel plate channel that is connected to a water storage plenum at the bottom and to a heat sink at the top.