Engineering, 18.12.2019 18:31 rhondafits9000
Consider the flow of engine oil (cp = 2048 j/kg·k) through a thin-walled copper tube at a rate of 0.3 kg/s. the engine oil that enters the copper tube at an inlet temperature of 80°c is to be cooled by cold water (cp = 4180 j/kg·k) flowing at a temperature of 20°c. it is desired to have an exit temperature of the engine oil not greater than 68°c. the individual convective heat transfer coefficients on oil and water sides are 750 w/m2·k and 350 w/m2·k, respectively. a thermocouple probe installed on the downstream side of the cooling water measures a temperature of 46°c for a double-pipe parallel-flow heat exchanger.]
Answers: 3
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
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Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
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Engineering, 04.07.2019 18:20
Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k
Answers: 2
Engineering, 04.07.2019 19:10
What are the major differences between injection molding and extrusion?
Answers: 2
Consider the flow of engine oil (cp = 2048 j/kg·k) through a thin-walled copper tube at a rate of 0....
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