K-factor (fire protection)

In fire protection engineering, the K-factor formula is used to calculate the discharge rate from a nozzle. Nozzles can be fire sprinklers or water mist nozzles, hose reel nozzles, water monitors and deluge fire system nozzles.

The flow rate of a nozzle is given by $q=K{\sqrt {p}}$ ^[1], where q is the but flow rate in litres per minute (LPM), p is the pressure at the nozzle in Bar and K is the K-factor is given in units of $LPM/{\sqrt {\text{bar}}}$ .

References

^ "K-Factor formula". Canute LLP. 18th Jan 2009. Retrieved 2009-01-18. {{cite web}}: Check date values in: |date= (help)

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[1] "K-Factor formula". Canute LLP. 18th Jan 2009. Retrieved 2009-01-18. {{cite web}}: Check date values in: |date= (help)

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