Engineering, 19.07.2019 21:10 dlsmith68
Asteel tube [k 15 w/(m.°c)] of outside diameter 7.6 cm and thickness 1.3 cm is covered with an insulation material [k 0.2 w/(m. c)] of thickness 2 cm. a hot gas at 320°c with a heat transfer coefficient of 200 w/(m2.c) flows inside the tube. the outer surface of the insulation is exposed to cooler air at 20°c with a heat transfer coefficient of 50 w/(m2·°c). calculate a) the heat loss from the tube to the air for a 5-cm length of the tube. b) the temperature drops due to the thermal resistances of the hot gas flow, the steel tube, the insulation layer, and the outside air.
Answers: 1
Engineering, 04.07.2019 12:10, Ryantimes2
On a average work day more than work place firs are reorted
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Engineering, 04.07.2019 18:10, anna22684
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10, soreese02
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Asteel tube [k 15 w/(m.°c)] of outside diameter 7.6 cm and thickness 1.3 cm is covered with an insul...
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