Option 1 Pump Head Calculation
2
FOR CHILLED WATER PUMP Straight Pipe Length (One Way) = 426 Meter Straight Pipe Length (Two Way) = 852 Meter = 2794 Feet Considering Friction Loss of 2.5 Ft/100 Ft), Total Pressure Drop in straight pipes shall be Total Pressure Drop in Straight Pipes = 2794 X2.5/100 = 70 Feet ---------------------- ----- (A) Total pressure drop in pipe fittings = 70 X25/100 = 17.5 Feet -------------------------- (B) Pressure Drop Across the valve is calculated as follows Valve Size ( MM) Quantity Equivalent length (FT) Total Length (FT) GV 300 2 13 26 strainer 300 2 250 500 DRV 300 2 165 330 MV 300 1 13 13 GV 600 1 25 25 DRV 600 1 320 320 Total Equivalent length = 1334 Feet Pressure Drop across valves considering friction loss of 2.5 Fe et/100 Feet Pressure Drop Across vales = 33 Feet ----------------------------(C) Pressure Drop across Chiller Evaporator = 24.5 Feet ------------------------ (D) Pressure Drop across Last A/C unit & Valves = 4 Feet --------------------------- (E) Total Pressure Drop = 149 Feet Considering 15 % Safety = 164 Feet = 50 Meter = 5.0 Bar Hence Chilled Water Pump capacity shall be 3210 GPM @ 5.0 Bar Head.
-
Upload
mohammad-zeeshan -
Category
Documents
-
view
248 -
download
0
Transcript of Option 1 Pump Head Calculation
7/25/2019 Option 1 Pump Head Calculation
http://slidepdf.com/reader/full/option-1-pump-head-calculation 1/2
FOR CHILLED WATER PUMP
Straight Pipe Length (One Way) = 426 Meter
Straight Pipe Length (Two Way) = 852 Meter = 2794 Feet
Considering Friction Loss of 2.5 Ft/100 Ft), Total Pressure Drop in straight pipes shall be
Total Pressure Drop in Straight Pipes = 2794 X2.5/100 = 70 Feet --------------------------- (A)
Total pressure drop in pipe fittings = 70 X25/100 = 17.5 Feet --------------------------
(B)
Pressure Drop Across the valve is calculated as follows
Valve Size ( MM) Quantity Equivalent length (FT) Total Length (FT)
GV 300 2 13 26
strainer 300 2 250 500
DRV 300 2 165 330
MV 300 1 13 13GV 600 1 25 25
DRV 600 1 320 320
Total Equivalent length = 1334 Feet
Pressure Drop across valves considering friction loss of 2.5 Feet/100 Feet
Pressure Drop Across vales = 33 Feet ----------------------------(C)
Pressure Drop across Chiller Evaporator = 24.5 Feet ------------------------ (D)
Pressure Drop across Last A/C unit & Valves = 4 Feet --------------------------- (E)
Total Pressure Drop = 149 Feet
Considering 15 % Safety = 164 Feet
= 50 Meter
= 5.0 Bar
Hence Chilled Water Pump capacity shall be 3210 GPM @ 5.0 Bar Head.
7/25/2019 Option 1 Pump Head Calculation
http://slidepdf.com/reader/full/option-1-pump-head-calculation 2/2
FOR CONDENSATE WATER PUMP
Straight Pipe Length (One Way) = 204 Meter
Straight Pipe Length (Two Way) = 408 Meter = 1340 Feet
Considering Friction Loss of 2.5 Ft/100 Ft), Total Pressure Drop in straight pipes shall be
Total Pressure Drop in Straight Pipes = 1340 X2.5/100 = 33.50 Feet ----------------------- (A)
Total pressure drop in pipe fittings = 33.50 X25/100 = 0.85 Feet ------------------------- (B)
Total pressure drop (Against Gravity) = 4 Meter = 13 Feet ---------------------------(C)
Pressure Drop Across the valve is calculated as follows
Valve Size ( MM) Quantity Equivalent length (FT) Total Length (FT)
GV 450 3 19 57
strainer 450 2 350 700
DRV 450 3 240 720
MV 450 2 19 38
GV 750 1 34 34
DRV 750 1 400 400
Total Equivalent length = 1949 Feet
Pressure Drop across valves considering friction loss of 2.5 Feet/100 Feet
Pressure Drop Across vales = 49 Feet --------------------------- (D)
Pressure Drop across Chiller Condenser = 21.9 Feet ------------------------ (E)
Pressure Drop across cooling tower = 16 Feet --------------------------- (F)
Total Pressure Drop = 134 Feet
Considering 15 % Safety = 154 Feet
= 47 Meter
= 4.7 Bar
Hence Condensate Water Pump capacity shall be 6420 GPM @ 4.7 Bar Head.
