P hp = power (horsepower, hp) m min = mass flow rate per minute (lb m /min) h = head or height (ft) Enter these values into the water horsepower formula.

Usually, temperature correction for water is negligible. horsepower – hp kilowatt – kW 0.745 7 horsepower hour – hp-h kilojoule – kJ 2 684 horsepower hour – hp-h British thermal unit per hour – Btu 2 545 inch – in millimeter – mm 25.4 inch of mercury at 0°F – inHg kilopascal – kPa 3.386 inch of water at 68°F – inH 2 O kilopascal – kPa 0.248 7 friction loss P The constant 1 horsepower equals 550 foot-pounds per second.

A brake is another name for a dynamometer, which is a device for measuring power. One method to determine the quantity of water is to do a Weir Gate measurement. One method to determine the quantity of water is to do a Weir Gate measurement. Water horsepower is the minimum power required for a pump to move water throughout a given system, or the power that the pump would require if it were 100 percent efficient. In this formula we know the values of A,L and N, Pm (mean indicated pressure) can be calculated by the use of engine indicator. Enter this into your cheat sheets, and remember it. Due to hydraulic, mechanical and volumetric losses in a pump the actual or water horsepower available for work on the fluid is less than the total horsepower supplied. Power also is measured in dBm , a relative logarithmic measure with 1 milliwatt as reference, calories per hour , Btu per hour (Btu/h). ** The height is the number of feet off the ground the water falls over the waterwheel. water horsepower: Q = flow rate or discharge: H = total head: n = pump efficiency: BHP = brake horsepower: NPSH = net positive suction head: V = velocity of fluid or liquid: p = impeller inlet pressure: p v = vapor pressure of fluid or liquid: SW = specific weight of fluid or liquid: g = acceleration of gravity

It can be expressed in terms of the water horsepower divided by efficiency.

Two common definitions being used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the … Because the first pumps pumped water, the output or work of a pump is called Water Horsepower (WHP).

Example 1.

The horsepower of a pump can be determined once basic information is known about the pumping station. There are many different standards and types of horsepower. 1HP=746 watts. Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. Formula: WHP=QH/3960 Where, WHP = Water Horsepower, Q = Flow Rate or Discharge, H = Total Head.

The formula is: 3,960 is a factor that converts horsepower into pump terms. 1.133 ft of water = 1 in. Formula Used: Water Horsepower: Flow Rate or Discharge: Total Head / Total Dynamic Head (TDH): It is defined as the total equivalent height that a fluid is to be pumped, taking into account friction losses in the pipe.Sum of discharge head, suction lift, … First we need to convert the horsepower to watts. I=1492/240 (for single phase), which means I=6.21A.

Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. This is best done with a surveyor's instrument although it can be done with a carpenter's level and ruler. The horsepower required (ex. Two common definitions being used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 … Water Treatment Math Formulas Water Treatment Formulas 7 (3960) (Pump Eff., %, expressed as decimal) (Motor Eff., %,expressed as decimal) (Flow, gal/min) (Head, ft) Motor HP Pump Efficiency, %, expressed as a decimal (Water Horsepower) Brake HP Motor Efficiency, %, expressed as a decimal (Brake Horsepower) Motor HP X 100% Motor Horsepower In other words, 1 horsepower is the amount of work required to move a load of 550 pounds over 1 foot, in 1 second. The Head is the distance that the water falls in feet.

This formula is applied to calculate the speed or velocity at the end of the run. Horsepower is a unit of power. Two items are needed to determine the gross potential horsepower of a waterwheel or turbine. Horsepower is a unit of power equal to 550 foot pounds per second or 746 watts. One horsepower is equivalent to 33,000 foot-pounds per minute, or the power required to lift 550 pounds by one foot in one second, and is equivalent to about 746 watts. I’ll explain.

From this you can determine the HorsePower at the axle of the waterwheel. The formula for calculating power in electrical circuits is P=VI. To use this method, click on the link for the Weir Gate Page. HP is a unit for power, as it can be measured by W (watt). Calculate the HP, Flow Rate or Discharge, and Total Head using this simple online calculator. There is another Horsepower formula related to the weight given as.