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Brake Horsepower Calculator

Use brake horsepower calculator to find water horsepower by entering the required values

gpm
ft
HP
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Table of Contents:

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Formula

BHP = 100QH/3960n

Where,
Q = Flow Rate or Discharge
H = Total Head
n = Pump Efficiency

Brake Horsepower is defined as the actual or useful horsepower of an engine that is determined from a force exerted on a friction brake. Here the horsepower of an engine is recorded on a device called dynamometer. The advanced online Brake Horsepower Calculator is useful in calculating the brake horsepower of an engine by using the formula.

The Brake Horsepower is termed as the dynamometer connected to the drive shaft.

Example:
Calculate the Brake Horsepower (Water Horsepower) for the given details.
Flow Rate or Discharge (Q) = 25 gpm
Total Head (H) =15 ft
Pump Efficiency (n) = 5

Solution:
Apply Formula:
BHP = 100QH/3960n
BHP = 100*25*15/3960*5
BHP = 1.89 HP

References: 

  1. What is brake horsepower? Bhp vs HP. MechStuff.  
  2. What is a dynamometer ? Premium Sensing Solutions. 
  3. How dynamometer is connected to drive shaft. Machine Service
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