Engineering, 20.12.2019 22:31, emilyanneK2540
Engine oil (cp = 2100 j/kg·k) is to be heated from 20°c to 60°c at a rate of 0.3 kg/s in a 2-cm-diameter thin-walled copper tube by condensing steam outside at a temperature of 130°c (hfg = 2174 kj/kg). for an overall heat transfer coefficient of 650 w/m2 ·k, determine the rate of heat transfer and the length of the tube required to achieve it.
Answers: 1
Engineering, 04.07.2019 18:10, salazjlove
Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation
Answers: 1
Engineering, 04.07.2019 18:10, oshawn108
Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg. k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m. k
Answers: 2
Engineering, 04.07.2019 18:20, samueltaye
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
Engine oil (cp = 2100 j/kg·k) is to be heated from 20°c to 60°c at a rate of 0.3 kg/s in a 2-cm-diam...
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