Steam is produced in the copper tubes (k = 223 Btu/h∙ft∙°F) of a heat exchanger at a temperature of 280°F by another fluid condensing on the outside surfaces of the tubes at 350°F. The inner and outer diameters of the tube are 1 in and 1.3 in, respectively. When the heat exchanger was new, the rate of heat transfer per foot length of the tube was 2 × 104 Btu/h. Determine the rate of heat transfer per foot length of the tube when a 0.01-in-thick layer of limestone (k = 1,7 Btu/h∙°F ) has formed on the inner surface of the tube after extended use.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.