Fittings such as elbows, tees, valves and reducers represent a significant component of the pressure loss in most pipe systems. This article details the calculation of pressure losses through pipe fittings and some minor equipment using the K-value method, also known as the Resistance Coefficient, Velocity Head, … See more The K-value, Resistance Coefficient, Velocity Head, Excess Head or Crane method allows the user to characterise the pressure loss … See more The Velocity head method is named as such because it represents the pressure loss through a fitting as the equivalent number of ‘velocity heads’. It is in some ways similar to the … See more This example demonstrates how to use the excess head method to calculate the head loss through simple pipe and fitting arrangement. The example uses water in system of standard … See more WebDec 9, 2024 · K-factors for T-Junction K-factor for incompressible liquid One of the most typical questions asked by process or hydraulic engineers is what is the value of hydraulic resistance (K-factor) of piping component (fitting, valve, etc) and how to calculate it for different types of flow?
Pipe diameter sizing, pressure drop and fluid flow …
WebIt is difficult to understand why, but Crane believed that the resistance factors (K) that were determined in this way would be constant for all flow rates for a given size of fitting. This … WebResistance to change As the air enters the ductwork system – in Figure 3 through a simple louvred entry – the air will be accelerated from the still air outside the louvre to a velocity … elk creek campground grand lake colorado
Pressure Drop in Pipe Fittings and Valves - Katmar Software
WebThe L e /D method simply increases the multiplying factor in Equation (1) (i.e. ƒL/D) by a length of straight pipe (i.e. Le) which would give rise to a pressure drop equivalent to the losses in the fittings, hence the name "equivalent length". The multiplying factor therefore becomes ƒ (L+Le)/D. WebThe load and resistance factors are determined using statistics and a pre-selected probability of failure. Variability in the quality of construction, consistency of the construction material are accounted for in the factors. forch products