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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. K-Factors calculated in Metric units; The flow rate of a nozzle is given by , where ''q'' is the 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 . K-Factors have also been calculated and published in English units of PSI and GPM. Care should be exercised not to intermix K-factors from Metric and English units as the resulting factors are not equivalent or interchangeable. ==References== 〔 Sources using English K-Factor for fire protection; Engineermate; http://engineermate.com/Hydraulics/FlowTest/KfactorConvert.htm Building codes; http://buildingcoderesourcelibrary.com/ Sprinkler manufacturer who lists both types of K-Factor; http://www.hdfire.com/products/spray_nozzels/medium_velocity_spray_nozzle.htm 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「K-factor (fire protection)」の詳細全文を読む スポンサード リンク
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