Engineering, 09.10.2019 01:10 klk597703
The hot water pipe leaving a residential water heater is not insulated. the water flowing inside is maintained at 49 °c and has a convection coefficient of 234 w/m2 *k. the inside diameter of the copper (400 w/m*k) pipe is 0.745 inches; the wall thickness is 0.065 inches. the temperature and the convection coefficient of the air surrounding the pipe are 15 °c and 16 w/m2 *k respectively. determine the heat loss per unit length of uninsulated pipe, and the temperature of the outer surface. determine the heat loss and the outermost surface temperature for the same conditions with the pipe insulated using 3/8"-thick insulation whose thermal conductivity is 0.034 w/m*k. do the surface temperatures of the copper pipe change with the addition of insulation?
Answers: 1
Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:10
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
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Engineering, 04.07.2019 18:20
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Engineering, 04.07.2019 19:10
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