Fire friction loss calculator

Of this number for nozzle pressure, friction loss, and elevation loss on the discharge side of the eductor.As an example, suppose we have a small fire and are tasked with going into action with our foam eductor. The eductor has an inlet pressure of 200 PSI. We know that 65% of this, or 130 PSI, can be allotted for hose, appliances, and elevation. If the nozzle has an operating pressure of 100 PSI, we have only 30 PSI remaining for use in friction loss and/or elevation loss.Let’s say that the nozzle in this scenario is level with the eductor and therefore elevation is not an issue in this stretch. That gives us 30 PSI remaining for overcoming friction loss. If the eductor is designed to flow 125 GPM and we are using 1¾” hose, then the friction loss in this hose at 125 GPM is about 20 PSI per hundred feet. Therefore, we can stretch a line as long as 150 feet of 1¾” hose to apply the foam stream.Let’s take a look at that again, here are the highlights:We are using a 125 GPM eductor with a rated inlet pressure of 200 PSIWe can allot no more than 130 PSI for elevation, friction loss, and nozzle pressure (65% of the rated eductor inlet pressure)Friction loss in 150 feet of 1¾” hose at 125 GPM is about 30 PSI (maybe more or less depending on the brand of hose, age, and wear on it)Nozzle pressure is 100 PSI in this scenarioElevation is zero in this scenarioTherefore we can stretch no more than 150 feet of 1¾” hose with a 100 PSI nozzle from the eductor to the sceneDepending on the quantity of solution flowing, the length and diameter of the hoseline being used, the nozzle pressure required, and the elevation, all together determine just how far you can stretch a line. The key is not exceeding the 65% of the rated inlet pressure. Remember, as with any appliance, each manufacturer has their own rules and guidelines, so make sure you know the specific details of your own equipment. Take a look at the individual specifications of your equipment. The web sites at the end of the first part in this series have a lot of detail that can guide you in your fireground decision-making.A valuable attribute of the portable eductor is that it can be placed closer to the scene

Liquid Flow and Friction Loss Friction loss in schedule 40 steel pipe with viscous liquids - viscosities ranging from water to oil. Unit Factor Method Convert between units with the unit factor or factor-label method Viscosity - Absolute (Dynamic) vs. Kinematic Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic. Viscosity Converter: Convert Between Dynamic & Kinematic Viscosity Convert between viscosity units like Centiposes, milliPascal, CentiStokes and SSU. Viscous Liquids - Friction Loss vs. Viscosity and Flow Friction loss in steel pipes for fluids with viscosities ranging 32 - 80000 SSU. Water - Absolute (Dynamic) Viscosity vs. Temperature and Pressure Absolute viscosity for water in centipoises for temperatures between 32 - 200oF. Water - Properties at Gas-Liquid Equilibrium Conditions Figures and tables showing how the properties of water changes along the boiling/condensation curve (vapor pressure, density, viscosity, thermal conductivity, specific heat, Prandtl number, thermal diffusivity, entropy and enthalpy). Water Viscosity: Dynamic and Kinematic Viscosity at Various Temperatures and Pressures Free online calculator - figures and tables with viscosity of water at temperatures ranging 0 to 360°C (32 to 675°F) - Imperial and SI Units. Our Mission The Engineering ToolBox provides a wide range of free tools, calculators, and information resources aimed at engineers and designers. It offers detailed technical data and calculations for various fields such as fluid mechanics, material properties, HVAC systems, electrical engineering, and more.The site includes resources for common engineering tasks, such as calculating physical properties (e.g., density, viscosity, thermal conductivity), converting units, and designing systems like heating and water distribution. With sections on everything from acoustics to hydraulics, it serves as a comprehensive tool for both students and professionals in technical and engineering disciplines. About the Engineering ToolBox! Privacy Policy We don't collect information from our users. More about the Engineering ToolBox Privacy Policy We use a third-party to provide monetization technology for our site. You can review their privacy and cookie policy here. You can change your privacy settings by clicking the following button: . Citation This page can be cited as The Engineering ToolBox (2003). Absolute or Dynamic Viscosity Online Converter. [online] Available at: [Accessed Day Month Year]. Modify the access date according your visit.

SMACNA - Duct System Calculator - Metric This calculator, complete with detailed instructions, enables HVAC system designers to design an average duct system without additional references. The only calculator in the industry to include the 0.0003 roughness factor duct friction loss data for designing straight, round or rectangular sheet metal ducts.8 1/2" x 11". Circular slide rule fits in vinyl 3-hole punched pouch. 1988. This calculator, complete with detailed instructions, enables system designers to design an average duct system without additional references. SMACNA's calculator is the only one in the industry to include the 0.0003 roughness factor duct friction loss data for designing straight, round or rectangular sheet metal ducts. Published/Edition: 1998. ISBN/Book No.: SMAC12 Shipping Summary: Packages are shipped from Monday to Friday. The usual time for processing an order is 1 to 3 business days, but may vary depending on the availability of products ordered. This period excludes delivery times, which depend on your geographic location. We provide tracking for every order. Tracking will be available once your product is shipped. Each individual product may be shipped from different fulfillment centers across the globe as our product research team spends the time to source quality yet affordable products. Estimated delivery times: Standard Shipping: 3-7 business days Expedited Shipping: 2-5 business days International Shipping: 10 - 15 business daysPlease note that these are estimates, not guarantees. Delivery time depends on a number of variables, and there may be delays such as bad weather affecting air transport, or a package being held for inspection by Customs. ibspot is not liable for any delays in international transportation or customs clearance.Shipments can be delivered directly to most addresses, except post office boxes. However, in certain remote areas, there may be an additional delivery charge or you may need to pick up your package from the closest service location of ibspot's shipping partner.Shipping Status: As soon as your order ships, you'll receive a shipping confirmation email that includes your tracking number. If you don't receive a shipping confirmation email right away, don't worry! We know the delivery date or date range provided at checkout and we'll be sure to deliver the items within that timeframe.Order changes: Please contact our customer support if the order needs to be canceled or modified.Item not received: If you've successfully placed an order and haven't received it yet while the tracking status shows it's delivered. you'd wish to contact the carrier to hunt out your Cover as once the item is Covered we have control over it (once it’s by the carrier), but if still persists kindly email us Damaged ParcelIf your package has been delivered in a PO Box, please note that we are not responsible for any damage that may result (consequences of extreme temperatures, theft, etc.). If you have any questions regarding shipping or want to know about the status of an order, please contact us or email to support@ibspot.com. Please Read Our Return & Refund Policy Carefully: Return: You may return most items within

CALCULATOR : Bernoulli Equation Gas Pipeline Energy Grade Line EGL From Data Points [FREE] ± Calculate the Bernoulli equation total pressure or EGL (energy grade line) and pressure loss from data points for gas flow. Enter data points as three values separated by commas (position X, elevation Z, static pressure P) with each set of data on a new line. The position data should be in ascending order from the pipeline inlet to the pipeline outlet. Static pressure is gauge pressure (change units on the setup page). Select a data point to calculate the pressure terms at that data point (default is the pipe inlet). The total pressure or Bernoulli pressure equals the sum of the potential pressure, the static pressure and the dynamic pressure. For pipelines with constant diameter, the friction pressure loss is equal to the difference in total pressure. Note : The data point option is set to pipe inlet when the page loads. Click calculate to update the data point options to include all of the data points, then you select the data point. Click calculate each time you change the position data (X) values, and before you select the data point. Use the Result Plot option to plot the static pressure, dynamic pressure, potential pressure, hydraulic pressure and total pressure versus position. Use the Result Table option to display a table of static pressure, potential pressure, hydraulic pressure, delta hydraulic pressure and delta pressure per length versus data point. Tool Inputschdtype : Pipe Schedule Typediamtype : Pipe Diameter TypeODu : User Defined Outside DiameterIDu : User Defined Inside Diameterwtntype : Wall Thickness Typetnu : User Defined Wall Thicknessfluidtype : Fluid TypeSGu : User Defined Gas Specific Gravityzfactype : Compressibility Factor Typezu : User Defined Compressibility Factordatatype : Data Point (Click Calculate To Update)Xdata : Position Data PointsZdata : Elevation Data PointsPdata : Static Pressure Data PointsT : TemperatureNg : Mole FlowrateTool OutputID : Inside Diameter Pb : Bernoulli Pressure At Data PointPbΔ : Pressure Loss (From Inlet)Pbo : Bernoulli Pressure At InletPd : Dynamic Pressure At Data PointPh : Hydraulic Pressure At Data PointPhΔ/d : Pressure Loss Per LengthPs : Static Pressure At Data PointPz : Potential Pressure At Data PointSG : Gas Specific GravityZΔ : Delta Elevation d : Distance From Pipe Inlet z : Compressibility Factor CALCULATOR : Bernoulli Equation Gas Density And Compressibility Factor [FREE] ± Calculate Bernoulli equation gas density and

Flow • For turbulent flow, Colebrook (1939) found an implicit correlation for the friction factor in round pipes. This correlation converges well in few iterations. Convergence can be optimized by slight under-relaxation. The familiar Moody Diagram is a log-log plot of the Colebrook correlation on axes of friction factor and Reynolds number, combined with the f=64/Re result from laminar flow. The plot below was produced in an Excel spreadsheetAn explicit approximationMust be dimensionless! Pipe roughness pipe material pipe roughness (mm)  glass, drawn brass, copper 0.0015 commercial steel or wrought iron 0.045 asphalted cast iron 0.12 galvanized iron 0.15 cast iron 0.26 concrete 0.18-0.6 rivet steel 0.9-9.0 corrugated metal 45 0.12 PVCCalculating Head Loss for a Known Flow • From Q and piping determine Reynolds Number, relative roughness and thus the friction factor. Substitute into the Darcy-Weisbach equation to obtain head loss for the given flow. Substitute into the Bernoulli equation to find the necessary elevation or pump headCalculating Flow for a Known Head Obtain the allowable head loss from the Bernoulli equation, then start by guessing a friction factor. (0.02 is a good guess if you have nothing better.) Calculate the velocity from the Darcy-Weisbach equation. From this velocity and the piping characteristics, calculate Reynolds Number, relative roughness and thus friction factor. Repeat the calculation with the new friction factor until sufficient convergence is obtained. Q = VA"Minor Losses" Although they often account for a major portion of the head loss, especially in process piping, the additional losses due to entries and exits, fittings and valves are traditionally referred to as minor losses. These losses represent additional energy dissipation in the flow, usually caused by secondary flows induced by curvature or recirculation. The minor losses are any head loss present in addition to the head loss for the same length of straight pipe. Like pipe friction, these losses are roughly proportional to the square of the flow rate. Defining K, the loss coefficient, by. K is the sum of all of the loss coefficients in the length of pipe, each contributing to the overall head loss • Although K