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Fluid sciences and heat transfer
Hii I'm an mechanical engineering student and I'm kind of stuck on this problem and I don't know where to start from so can anyone help me out... on this problem... (all temperatures are in Fahrenheit)
Air is flowing in a tube,with a 1.0-in. inside diameter, at 30 lbm/h and 1 atm pressure. The tube is heated from steam condensing at 220 degree Fahrenheit outside the tube, maintaining the inner walls at 220 degree F. If the air enters the tube at a temperature of 70 F and exits at a temperature of 190 degree F, determine the foloowing how long is the heated tube. (a)the length of the tube (b)the total rate of heat transfer to the air (from tube entrance to tube exit) |
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