Quick Formula
- Water horsepower = minimum power required to run water pump.
- TDH = Total Dynamic Head = Vertical distance liquid travels (in feet) + friction loss from pipe.
- Q = flow rate of liquid in gallons per minute.
- SG = specific gravity of liquid (this equals 1 if you are pumping water)
- Water horsepower =
How do I know what size water pump I need?
Use the pump flowrate calculation: Divide the container volume by the length of time it took to fill up to get the flow rate. 5 gallons / 1 minute = 5 gallons per minute. 5 gallons /30 seconds (0.5 minutes) = 10 gallons per minute.
How do you calculate pumping rate?
The formula for determining the flow rate is gallons drawn down (that were measured above), divided by the seconds required for recovery, then multiplied by 60: (Gallons / Seconds) x 60 = Gallons per Minute (GPM) flow rate..
How do you calculate the flow rate of a water pump?
Submersible pump flow calculation formula: 60HZ flow ? 0.83 = 50HZ flow 60HZ lift ? 0.69 = 50HZ lift 60HZ power ? 1.728 = 50HZ motor power motor output power = Q (flow) ? H (head) / 367.2 / efficiency ? 1.15 motor output power = shaft power ? 1.15 pump efficiency = Q ? H ? 0.00272 / motor power Q represents flow; H
What size of pump do I need to lift water 100 feet?
Example – Horsepower Required to Pump Water
| Power Required to Pump Water (hp) | ||
|---|---|---|
| Volume Flow (gpm) | Height (ft) | |
| 80 | 0.101 | 0.404 |
| 90 | 0.114 | 0.455 |
| 100 | 0.126 | 0.505 |
How do you calculate pump LPM?
Flow = (Displacement x RPM)/1000
Flow is in Liter per minute (LPM), Displacement is cc per revolution while RPM is rotation per minute. Q = (90 x 2222)/1000 = 200 l/min (approx).
How do you calculate pump volume?
Hydraulic Pump Volume Capacity
- 1 gpm (US) =6.30888×10–5 m3/s = 0.227 m3/h = 0.06309 dm3(litre)/s = 2.228×10–3 ft3/s = 0.1337 ft3/min = 0.8327 gpm (UK)
- 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft.
- 1 in2 = 6.452 cm2 = 6.452×10–4 m2 = 6.944×10–3 ft2
What is the difference between 0.5 HP and 1hp water pump?
For example if an 0.5 HP motor with discharge rate of 200 litres per hour takes 2 hours to lift the water, then an 1 HP pump with higher discharge rate 400 litres per hour can complete the task in less than 1 hour.
What is the difference between 1/2 hp and 3/4 hp water pump?
Water Capacity
The amount of water your pump can raise can be described by its GPM (Gallons Per Minute) value. The amount of water it can raise per minute is an important factor.Generally, ? hp pumps have 10 GPM, ideal for average houses. While ? hp pumps can go as high as 13 GPM.
How high can a 1.5 HP pump lift water?
5) I-Flo Submersible Pump 1.5Hp with Control Panel
This can lift water from 30 feet depth & throw water up to 120 feet in height.
How do you calculate pump suction pressure?
The equation for determining how much of a suction lift you can pull with your pump you can take your Atmospheric pressure(Pb) subtract your Pump NPSHR, Vapor Pressure (Vp), friction losses (hf) and NPSH Margin (Safety factor) and you will have your maximum suction lift.
How is water pump horsepower calculated?
The following formula can be used to calculate water horsepower (WHP).
- WHP = HQ / 3960.
- Where H is the change in pressure measured in height of water in feet and Q is the water flow rate in gallons per minute.
- WHP = (112 x 460) / 3960 = 13.0.
How much HP pump do I need?
Horsepower theoretically required for pumping water equals the gallons per minute multiplied by the head in feet, and divided by 4.000 For power recommended, divide by 2000 instead of 4000.
How much water can a 2 HP pump move?
Number of submersible well pump stages determine pump lift capacity
| Table of Submersible Pump Stages vs HP vs Total Dynamic Head vs. GPM Flow Rate Capacity | ||
|---|---|---|
| Water Pump HP | Nr. of Pump Stages | GPM Flow Rate Capacity |
| 1 HP | 8 | 4 – 40 GPM (varies by TDH) |
| 1 1/2 HP | 11 | 4 – 40 GPM (varies by TDH) |
| 2 HP | 14 | 4 – 42 GPM (varies by TDH) |
What size well pump for a 400 ft well?
If the depth of your well is between 25 and 110 feet, you should use a deep well jet pump. If the depth of your well is between 110 and 400 feet, use a four-inch submersible pump. Remember, you can also use a submersible pump for wells as shallow as 25 feet.
Which pump is best for well?
Best Water Pumps for Domestic Use in India:
- Havells Hi-Flow MX2 Series 0.5 HP Centrifugal Water Pump.
- Havells Hi-Flow MX2 Series 0.5 HP Centrifugal Water Pump.
- Kirloskar 40S Mini Water Pump.
- Crompton 0.5HP SP Aquagold 50 Water Pump.
- Kirloskar KOSi-135 5 Star HP Openwell Submersible Pump.
How deep can a 1/2 hp submersible well pump go?
It is 95 feet down and pumps a consistent 11 gallons per minute at 40 psi, which is more than adequate for my needs. Unless you are completely knowledgeable about submersible pump installation, I strongly recommend professional installation.