A simple heat exchanger is made by installing a close return bend on two ½-in Schedule 40

Question:

A simple heat exchanger is made by installing a close return bend on two ½-in Schedule 40 steel pipes as shown in Fig. 10.32. Compute the pressure difference between the inlet and the outlet for a flow rate of 12.5 gal/min of ethylene glycol at 77°F.

5-in Schedule 40 pipe Flow Inlet Outlet Close return bend 4.00 ft