Pump selection forms a critical part in the functioning of a filtration system. The paper has been published in filtration and separation and explains in detail the selection criteria for ma…Full description
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Rectangular Tank Sizing
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BASIC CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on NFPA 13 / 14 & 24 1) FIRE HOSE REEL SYSETM FHR Flow rate = 50 gpm Max No of FHR in operation at any time = 2 Nos Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 50 gpm * 2 No * 90 Mins
9000
Total storage volume required 1 galloons = 3.785 litres
gpm
= 9000 gallons (Minimum)
Total storage volume required = 9000 gallons * 3.785
34065
TOTAL STORAGE TANK VOLUME
34
litres m3
Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
= 5.0 bar Minimum.
2) FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins
Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
= 6.5 bar Minimum.
3) SPRINKLER SYSETM Sprinkler spacing will be 3.6 meters design density will be 0.15gpm/ft2(Ordinary Hazard) area will be 1500 ft2 to be assumed as fire zone 1500 x 0.15 = 225 gpm Total capacity will be 225gpm... Sprinkler Water Storage Capacity (for Ordinary Hazard Area) = 225 gpm * 1 No * 90 Mins 1 galloons = 3.785 litres
SIMON ENGG. PARTNERS
20250
1 OF 28
gallons
Total storage volume required = 20250 gallons * 3.785
76646
TOTAL STORAGE TANK VOLUME
77
litres m3
4) WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins
Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
= 6.5 bar Minimum.
NOTE:1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead
and in-racks
2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary
TANK CAPACITY
PUMP CAPACITY
FHR FH SPRINKLER SAFETY FACTOR
11 m3 28 m3 34 m3 7 m3
TOTAL
80 m3
FHR FH SPRINKLER HOSE STREAM SAFETY FACTOR TOTAL
Fire Pump Capacity : 750GPM at 8Bar(Electric +Disel+Jockey)
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100 GPM 250 GPM 300 GPM 50 GPM 50 GPM 750 GPM
1
CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on ROP standard Part-IV
1.1
FIRE PUMP CALCULATION
a)
FIRE HOSE REEL SYSETM Accordance with ROP. Coverage will be 30meters FHR Flow rate(Minimum discharge rate) = 0. 5 L/s Max No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
b)
= 5.0 bar Minimum.
FIRE HYDRANT SYSETM Accordance with NFPA 24. Each FH Flow rate = 250 gpm Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FH = 7.0 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
SIMON ENGG. PARTNERS
= 9.0 bar Minimum.
3 OF 28
c)
SPRINKLER SYSETM Accordance with NFPA 13. Maximum hazard 1500sq.feet will be occur in Ordinary hazard Sprinkler spacing will be 3.6 meters design density will be 0.15gpm/ft2 1500 x 0.15 = 225 gpm Total capacity will be 225gpm... Residual Pressure required at Sprinkler = 3.5 Bar Pressure loss in pipe/fittings etc = 0.5 bar Safety = 0.5 bar Total head pressure required
= 4.5bar Minimum.
NOTE:-
1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead and in-ra 2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary d)
WET RISER Accordance with NFPA 13. Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation Residual Pressure required at WR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
Result : 1250 US GPM ELECTRICAL PUMP AT 11 BAR PRESSURE 1250 US GPM DISEL PUMP AT 11 BAR PRESSURE 125 US GPM JOCKEY PUMP AT 11 BAR PRESSURE HIGH PRESSURE WATER MIST PUMP CALCULATION The system is designed as NFPA standard 750, in ordinary Hazard -II(area of operation - 144Sq.meter) Number of nozzles to protect the area of 144 sq.mtr: 12nos of Nozzle will be operate. Nozzle Flow rate = 28.8 Lpm Max No of Nozzle in operation at any time = 12 Nos Pump flow rate required
= 12 x 28.8Lpm = 316.8 L/min
Each pump can discharge 120 lpm @ 120 bar pressure Hence no. of pump required = 316.8/120 = 2.6 ~ 3 nos. Each Motor Drive 1 pump, hence we choose main 3x120 L/min + stand by 1x120 L/min. Total pump capacity on duty of 360 lpm @ 120 bar + 120 lpm @ 120 bar stand by, utilizing 4 nos. Of 30 kW electric driven motor. pump capacity = 3x120L/min at 120 bar pressure +standby 1x120 L.min at 120bar 1.3
FIRE TANK CALCULATION
a)
FIRE HOSE REEL SYSETM FHR Flow rate = 50 gpm Max No of FHR in operation at any time = 2 Nos Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 50 gpm * 2 No * 90 Mins Total storage volume required 1 galloons = 3.785 litres
9000 = 9000 gallons (Minimum)
Total storage volume required = 9000 gallons * 3.785 TOTAL STORAGE TANK VOLUME
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5 OF 28
gpm
b)
FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins
45000
gpm
22500
gpm
Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 45000 gallons * 3.785 TOTAL STORAGE TANK VOLUME c)
SPRINKLER SYSETM Sprinkler spacing will be 3.6 meters design density will be 0.15gpm/ft2(Ordinary Hazard) area will be 1500 ft2 to be assumed as fire zone 1500 x 0.15 = 225 gpm Total capacity will be 225gpm... Sprinkler Water Storage Capacity (for Ordinary Hazard Area) = 225 gpm * 1 No * 90 Mins 1 galloons = 3.785 litres Total storage volume required = 20250 gallons * 3.785 TOTAL STORAGE TANK VOLUME
d)
WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins Total storage volume required = 22500 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 22500 gallons * 3.785 TOTAL STORAGE TANK VOLUME
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e)
HIGH PRESSURE WATER MIST SYSTEM Water Tank for 316 lpm with 90 minutes operation = 360 x 90 minute = 28000 litre effective Total storage volume required = 28000 TOTAL STORAGE TANK VOLUME
e)
Table ITEM FHR FH SPRINKLER LANDING VALVE WATER MIST SYSTEM TOTAL
WATER TANK CAPACITY = 394 =400M2(Only for fire) f)
Result : 400M3 Water Tank Capacity only for fire Fire tank to maintain an individual dedicated fire tank. This fire tank should be separated into two divisions, One for f system & fire hose reel and the other for fire hydrants
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8 OF 28
rs for overhead and in-racks
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9 OF 28
34065 34
litres m3
SIMON ENGG. PARTNERS
10 OF 28
170325 170
litres m3
20250
gallons
76646
litres
77
85163 85
m3
litres m3
SIMON ENGG. PARTNERS
11 OF 28
28000 28
litres m3
o two divisions, One for fire sprinkler
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12 OF 28
PROJECT NO: 1091 PROJECT NAME: PUMP POWER BHP
=
GPM * PUMP HEAD (Feet) * SP GRAVITY 3960 * % OF PUMP EFFICIENCY
SAMPLE CALCULATION
=
750 GPM * 93 * 1 3960 * 0.7
=
69750 2772
=
25.16
=
18872 19
1 hp = 750 Watts
1)
FIRE PUMP FOR PASFR ADMIN BUILDING =
400 GPM * 352 * 1 3960 * 0.7
=
140800 2772
=
50.79
1 hp = 750 Watts
38095 =
2)
38
UTILITY PUMP FOR PASFR ADMIN BUILDING For total loading unit of 8 corresponding design flow rate is = 6 Litre / Sec
360 95.11 95 GPM * 192 * 1 3960 * 0.7
=
18240 2772
3)
=
6.58
=
4935
=
5
SUMP PUMP 15 GPM * 200 * 1 3960 * 0.7 =
3000 2772
=
1.08
=
812
=
0.812
D (Feet) * SP GRAVITY P EFFICIENCY
SP GRAVITY
hp Watts kW
110 352
meter feet
hp Watts kW
6 l/s Litre / Mins
1 galloons = 3.785 litres
gallons / min 60 192
meter feet
=
SPECIFIC GRAVITY OF LIQUI NORMAL WATER = 1
hp Watts kW
200
hp Watts kW
feet
PECIFIC GRAVITY OF LIQUID ORMAL WATER = 1
Each pump can discharge 120 lpm @ 120 bar pressure Hence no. of pump required = 316.8/120 = 2.6 ~ 3 nos. Each Motor Drive 1 pump, hence we choose main 3x120 L/min + stand by 1x120 L/min. Total pump capacity on duty of 360 lpm @ 120 bar + 120 lpm @ 120 bar stand by, utilizing 4 nos. Of 30 kW electric driven motor. Water Tank for 360 lpm with 30 minutes operation = 360 x 30 minute = 10800 litre effective water capacity, therefore water tank capacity with 20% allowance which is of 12960 litre shall be the minimum water capacity.
ng 4 nos. Of
WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins
22500
gpm
Total storage volume required = 22500 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 22500 gallons * 3.785 TOTAL STORAGE TANK VOLUME b)
FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins
45000
Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 45000 gallons * 3.785 TOTAL STORAGE TANK VOLUME TOTAL WATER FOR FIRE REQUIREMENT
PUMP POWER BHP
=
GPM * PUMP HEAD (Feet) * SP GRAVITY 3960 * % OF PUMP EFFICIENCY
SAMPLE CALCULATION
=
750 GPM * 93 * 1 3960 * 0.7
=
69750
gpm
2772 =
25.16
hp
=
18872 19
Watts kW
1 hp = 750 Watts
67500
85163 85
170325
litres m3
litres
170
m3
255
m3
BASIC CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on NFPA 13 / 14 & 24 1) FIRE HOSE REEL SYSETM FHR Flow rate = 50 gpm Max No of FHR in operation at any time = 2 Nos Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 50 gpm * 2 No * 90 Mins Total storage volume required 1 galloons = 3.785 litres
9000
gpm
= 9000 gallons (Minimum)
Total storage volume required = 9000 gallons * 3.785
34065
TOTAL STORAGE TANK VOLUME
34
litres m3
Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
= 5.0 bar Minimum.
2) FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins
Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
= 6.5 bar Minimum.
4) WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins
22500
Total storage volume required = 22500 gallons (Minimum)
Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
= 6.5 bar Minimum.
NOTE:1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead
and in-racks
2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary
TANK CAPACITY
PUMP CAPACITY
FHR FH SAFETY FACTOR
11 m3 28 m3 7 m3
TOTAL
80 m3
FHR FH HOSE STREAM SAFETY FACTOR TOTAL
Fire Pump Capacity : 750GPM at 8Bar(Electric +Disel+Jockey)
SIMON ENGG. PARTNERS
26 OF 28
100 GPM 250 GPM 50 GPM 50 GPM 750 GPM
1
CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on ROP standard Part-IV
1.1
FIRE PUMP CALCULATION
a)
FIRE HOSE REEL SYSETM Accordance with ROP. Coverage will be 30meters FHR Flow rate(Minimum discharge rate) = 0. 5 L/s Max No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
b)
= 5.0 bar Minimum.
FIRE HYDRANT SYSETM Accordance with NFPA 24. Each FH Flow rate = 250 gpm Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FH = 7.0 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required
e)
= 9.0 bar Minimum.
Table ITEM FHR FH HOSE STREAM( 5%) SAFETY FACTOR(5%) TOTAL
