What is the formula used to calculate water flow based on the given parameters during a water flow test?

The formula for calculating water flow during a flow test is crucial in understanding how a fire protection system operates. The correct formula, Q = 29.84 cd² √P, incorporates several key parameters: Q represents the flow of water in gallons per minute, c is the coefficient associated with the nozzle or orifice, d is the diameter of the opening in inches, and P stands for the pressure in pounds per square inch (psi).

This particular formula is derived from fundamental hydraulic principles and is commonly utilized to determine the flow rate in fire protection systems. The constant 29.84 is specifically tailored to convert between the units involved in the equation, giving a flow result that is both practical and applicable in the field.

Using this equation, when performing a flow test, one can effectively assess whether a system can supply the necessary amount of water under operational conditions, which is essential for ensuring fire safety and compliance with relevant codes and standards. Understanding this formula allows professionals to accurately predict system performance, making it a vital tool for anyone involved in the design and maintenance of water-based fire protection systems.