What is an ESFR fire sprinkler system?
ESFR Sprinkler Systems employ the use of an Early Suppression Fast Response Sprinkler and are predominately used for the protection of High Piled Storage. Storage arrangements may include palletized, solid pile, shelf, bin box, or rack storage of materials.
How is Esfr calculated?
1 Required flow per sprinkler calculated using Q=K*(√p) multiplied by number of design sprinklers (12). Refer to FM design criteria in technical datasheet. *Standard length is 36-1/2”. Also available in lengths of 18-1/2”, 24-1/2”, and 30-1/2”.
What is sprinkler K factor?
The k-factor for a fire sprinkler is the discharge coefficient, or in normal human terms just relates to the amount of water that is permitted through the sprinkler. The k-factor is dependent upon the orifice diameter of the sprinkler – a low k-factor (such as K2. 8 sprinkler, for example, is 50% discharge of a K5.
How do you calculate sprinkler density?
Divide the number of gallons per minute by the square footage in order to determine density. For instance, if the sprinkler system within a 300-square-foot room releases 25 gallons of water per minute, perform the following equation: 25 / 300 = 0.083.
How do you select K-factor for sprinklers?
K-factors can be determined by using the following equation: K = Q/P1/2, where K is represented by gallons per minute, or gpm/psi1/2, Q is flow rate in gpm and P is pressure in psi, or pounds of force.
How do you calculate K-factor for sprinklers?
K-Factor formula for fire sprinklers
- Q = AV.
- Q = A√(2gh)
- q = kp0.5
- k = q / p0.5
- p = ( q / k )2
- for metric calculations: p = pressure in Bar. q = flow in litre per minute. k = discharge constant Lpm/Bar0.5
- and for imperial calculation: p = pressure in psi. q = flow in gpm. k = discharge constant gpm/psi0.5
How far can a sprinkler head be from a wall?
Sprinkler heads must be a maximum of 12-15 feet apart, depending on the hazard rating of the space (it ranges from Light Hazard to Extra Hazard 1&2), and at least half that distance from the nearest walls (typically 7.5 feet away).
