Question: Water is flowing in the shell side of a heat exchanger. The water may be modeled as flowing parallel to the tubes. The water enters at 80°F and leaves at 150°F. The inside diameter of the shell is 12 in., the outside tube diameter is 1.125 in., and there are 50 tubes in the heat exchanger. The water flow rate through the heat exchanger is 800 gal/min.
(a) Calculate the equivalent diameter for the flow on the shell side of the heat exchanger.
(b) Calculate the average shell-side heat transfer coefficient.