GPM Calculations for 102 TR AIR COOLED CHILLER (Also Download Word File)

Calculation for Chilled Water Piping (Closed Piping System) :-

Primary Pump :

Sections	Flow	Velocity	Pipe Size Diameter	Friction Loss
Suction Side	TR x 2.4 102x2.4=244.8Gallons/Min (15.4  Litres/Sec)	4 to 7 6 Feet/Sec (1.82metres/Sec)	4 Inch (101.6mm)	2.7 Inches of Water Gauge/100Ft (22.13 Pascals/Metre)
Discharge Side	TR x 2.4 102x2.4=244.8Gallons/Min (15.4  Litres/Sec)	8-12 10 (3.04metres/Sec)	3 Inch ( 72.15mm)	10.1 Inches of Water Gauge/100Ft (82.8)Pascals/Metre)

Secondary Pump :

Sections	Flow	Velocity	Pipe Size Diameter	Friction Loss
Suction Side	TR x 2.4 102x2.4=244.8Gallons/Min (15.4  Litres/Sec)	4 to 7 6 Feet/Sec (1.82metres/Sec)	4 Inch (101.6mm)	2.7 Inches of Water Gauge/100Ft (22.13 Pascals/Metre)
Discharge Side	TR x 2.4 102x2.4=244.8Gallons/Min (15.4  Litres/Sec)	8-12 10 (3.04metres/Sec)	3 Inch ( 72.15mm)	10.1 Inches of Water Gauge/100Ft (82.8)Pascals/Metre)

Note :- For 10 degree temp drop through the chiller is 2.4gallons per min per ton of cooling (as per rule of thumb is 2.4 for each 1 TR ) and 3.0 gallons per min per ton through your condenser if it is water cooled.

Calculation for Condenser Piping (Open Piping System)

Primary Pump :

Sections	Flow	Velocity	Pipe Size Diameter	Friction Loss
Suction Side	TR x 3.0 102x3.0=306 Gallons/Min (19.3Litres/Sec)	4 to 7 6 Feet/Sec (1.82metres/Sec)	5 Inch (127mm)	4.5 Inches of Water Gauge/100Ft ( 36.89Pascals/Metre)
Discharge Side	TR x 3.0 102x3.0=306 Gallons/Min (19.3Litres/Sec)	8-12 10 (3.04metres/Sec)	3.5 Inch (88.9 mm)	15 (122.9Pascals/Metre)

Secondary Pump :

Sections	Flow	Velocity	Pipe Size Diameter	Friction Loss
Suction Side	TR x 3.0 102x3.0=306 Gallons/Min (19.3Litres/Sec)	4 to 7 6 Feet/Sec (1.82metres/Sec)	5 Inch (127mm)	4.5 Inches of Water Gauge/100Ft ( 36.89Pascals/Metre)
Discharge Side	TR x 3.0 102x3.0=306 Gallons/Min (19.3Litres/Sec)	8-12 10 (3.04metres/Sec)	3.5 Inch (88.9 mm)	15 (122.9Pascals/Metre)

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