Engineering, 22.06.2020 20:57 KaseyT
Consider high, long, and thick wall whose cross section is given in
figure. Thermal conductivities of various materials used, in , are
, , , , and . The left surface of wall is maintained at
and right surface of wall is subjected to convection with outdoor temperature
and . Assuming heat transfer through wall is one-
dimensional, determine (a) heat transfer rate through wall; (b) temperature at point
where sections , , and meet; and (c) temperature drop across section ; d) right
wall surface temperature. Disregard any contact resistances at interfaces.
Answers: 3
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Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery
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Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.
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Air flows over a heated plate ร t a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
Consider high, long, and thick wall whose cross section is given in
figure. Thermal conductivities...
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