Keyword | CPC | PCC | Volume | Score | Length of keyword |
---|---|---|---|---|---|

resistance coefficient | 0.42 | 0.7 | 3920 | 20 | 22 |

resistance | 1.55 | 0.4 | 1127 | 30 | 10 |

coefficient | 1.58 | 0.5 | 7755 | 100 | 11 |

Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|

resistance coefficient | 1.5 | 0.6 | 947 | 42 |

resistance coefficient pipe | 0.5 | 0.5 | 8723 | 80 |

resistance coefficient wiki | 0.93 | 0.4 | 2746 | 13 |

resistance coefficient table | 0.47 | 0.2 | 742 | 12 |

resistance coefficient copper | 0.52 | 0.1 | 434 | 63 |

resistance coefficient method | 1.07 | 0.4 | 1146 | 8 |

resistance coefficient fitting | 1.85 | 0.7 | 5349 | 54 |

resistance coefficient formula | 1.29 | 0.9 | 2605 | 44 |

resistance coefficient equation | 1.78 | 1 | 2192 | 5 |

resistance coefficient k piping | 1 | 0.6 | 573 | 77 |

resistance coefficient k reducer | 1.34 | 0.2 | 7449 | 98 |

resistance coefficient for ball valve | 0.28 | 1 | 8820 | 100 |

resistance coefficients of pipe fittings | 0.6 | 0.7 | 7070 | 42 |

resistance coefficient for sudden contraction | 1.65 | 1 | 2251 | 78 |

resistance coefficient elbow | 0.59 | 0.9 | 281 | 87 |

The Resistance Coefficient is used in a form of the Darcy Equation below: h L = hydraulic energy lost (head loss) from the fluid due to friction, in ft

The resistance coefficient method (or K-method, or Excess head method) allows the user to describe the pressure loss through an elbow or a fitting by a dimensionless number – K. This dimensionless number (K) can be incorporated into the Darcy-Weisbach equation in a very similar way to the equivalent length method.

This is why figures of specific resistance are always specified at a standard temperature (usually 20o or 25o Celsius). The resistance-change factor per degree Celsius of temperature change is called the temperature coefficient of resistance. This factor is represented by the Greek lower-case letter “alpha” (α).

Coefficients approaching zero can be obtained by alloying certain metals. • A negative coefficient for a material means that its resistance decreases with an increase in temperature. Semiconductor materials (carbon, silicon, germanium) typically have negative temperature coefficients of resistance.