The figure shows a closed piping system to supply chilled water to two finned-tube heat exchangers. Size the pipe for this system, assuming schedule-40 steel pipe is used with threaded fittings. Determine the pump flow rate and pump head requirements. The distances are as shown in feet. The head losses through the heat exchangers and chiller are shown as provided by the manufacturer.
Unit Chiller Heat Exchanger Heat Exchanger
(gpm) 50 30 20
Head Loss 15
16
Expansion tank
10'
15'
Makeup
Gate valve
10'
Chiller
tlinp
Globe valve