| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | PUMP POWER CALCULATION | ||||||||||||||
2 | Pump Title | TRANSFER PUMP | P-01A/B | 1hp = 0.7457 kW | |||||||||||
3 | SI UNIT SYS | METRIC UNIT SYS | 1 m3/hr= 4.4 gpm | ||||||||||||
4 | CAPACITY | m3/hr | 64.72 | GPM | EQ 1 | Ph = Q ρ g h / (3.6 106) | |||||||||
5 | DENSITY (SG IN METRIC SYS) | 1000 | kg/m3 | 0.934 | |||||||||||
6 | TOTAL DIFF. HEAD | 96.8 | m | 213.255 | ft | where | |||||||||
7 | PUMP EFFICIENCY | 0.32 | % | 0.32 | % | Note 1 | Ph = Power (kW) | ||||||||
8 | GRAVITY | 9.81 | m/s2 | not req. | Q = Capacity (m3/h) | ||||||||||
9 | POWER | 0 | kW | 10.1727751 | hp | ρ = Density (kg/m3) | |||||||||
10 | 0 | hp | 7.578717447 | kW | g = gravity (9.81 m/s2) | ||||||||||
11 | h = Total Differential Head (m) | ||||||||||||||
12 | PUMP MOTOR SELECTION | η = Pump Efficiency | |||||||||||||
13 | |||||||||||||||
14 | PUMP MAX. CAPACITY BASED ON IMPELLER | 0 | m3/hr | Note 2 | EQ 2 | HP= | GPM X HEAD (FT) X SG /(3960 X PUMP EFFICIENCY) | ||||||||
15 | DENSITY (SG IN METRIC SYS) | 1000 | kg/m3 | Note 3 | NOTES | ||||||||||
16 | PUMP MAX. POWER @ RATED IMPELLER | 0 | kW | 1 | Take less efficiency at proposal stage for cost estimation purpose. | ||||||||||
17 | = | 0 | hp | 2 | Multiplying by Pump Service Factor= 1.15 for max capacity | ||||||||||
18 | FROM THE MOTOR RATING TABLE SELECT THE CORRESPONDING MOTOR | 11 | kW | Note 4 | 3 | Electric motors are sized with SG assumed to be 1 | |||||||||
19 | = | 14.76510067 | hp | 4 | Rated power calculated for a selected imp size | ||||||||||
20 | REMEMBER: When choosing a motor for centrifugal pump, you must consider the impeller size, capacity, specific gravity of the fluid and | ||||||||||||||
21 | Service application in case of API requirement only. | REF: | |||||||||||||
22 | API REQUIREMENTS | 1 | http://www.lostock-electrical.co.uk/html/motor_rating.html | ||||||||||||
23 | Oil refinery applications use a second factor recommended by API. This organisation specifies that athe factor should be used as an additional | 2 | http://www.peerlesspump.com/Motor%20Selection%20Made%20Simple.pdf | ||||||||||||
24 | safety margin. These factors are: | ||||||||||||||
25 | * Up to 25 hp (18.7 kW) = 1.25 | ||||||||||||||
26 | * From 30 hp to 70 hp (22.4 kW to 52.2 kW) = 1.15 | ||||||||||||||
27 | *100 hp or higher = 1.10 | ||||||||||||||