Engineering, 05.08.2019 17:20, tdahna0403
Aheated long cylindrical rod is placed in a cross flow of air at 20°c (1 atm) with velocity of 10 m/s. the rod has a diameter of 5 mm and its surface has an emissivity of 0.95. if the surrounding temperature is 20°c and the heat flux dissipated from the rod is 15700 w/m2, determine the surface temperature of the rod. evaluate the air properties at 70°c. the properties of air (1 atm) at 70°c are k = 0.02881 w/m∙k, v = 1.995 × 10^−5 m2/s, and pr = 0.7177.
Answers: 1
Engineering, 04.07.2019 18:10, ayoismeisjjjjuan
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
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Engineering, 04.07.2019 19:10, kayleeemerson77
Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)
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Aheated long cylindrical rod is placed in a cross flow of air at 20°c (1 atm) with velocity of 10 m/...
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