K factor pipe flow software

Pipe roughness may affect the k factor, which is not considered in the. The following discussion explains how sprinkler k factors relate to flow. The loss factor is a constant directly proportional to the pressure drop across the component. Using the k, cv, kv calculator engineered software knowledge. The pipe flow calculation can compute flow rate, velocity, pipe diameter, elevation difference, pressure difference, pipe length, minor loss coefficient, and pump head total dynamic head. Qpfcalc pipe friction calculator using the darcyweisbach equation. In this example the first option is selected, which specifies that the pipe size diameter and flowrate are input values and the pressure drop is to be calculated. Download hydraulic engineering software pipe flow wizard 1. The pressure drop in such lines is often large compared. The top outlet of the most remote standpipe has to flow 250 gpm so k250100. Give me some details about detailed tees applied flow technology.

Hi, can anyone guide, what is the kfactor of venturimeter and is there any limit minmax, say for a application of gas flow rate 115 mmscfd measurement,4 pipe, 2600 psig pressure. K factor calculator for fittings pipe flow calculations forum. Also, looking at the k factor calculation for sudden and gradual contraction in the kfactorfittings calculator. Pipe flow expert allows the modelling of a sprinkler through the generic component object, through the definition of the performance characteristic, either by specifying a sprinkler k factor, or by specifying a set of flow rate versus pressureloss performance points. Flow sensors tech spec kfactor, offset and suggested operating range model description kfactor offset suggested operating range gallonsminute suggested operating range litersminute. It is oriented toward solving for a simple fluid flow medium in a complex system network. This is very similar to the flow coefficient above, but not equal. A new method for determining the velocity pressure loss factor k factor of hvac duct fittings has been established. Graphical display of size, flow, and parameter dependent data are provided. The textbook definition of the k factor is the time rate of steady heat flow through a unit area of homogeneous material induced by a unit temperature gradient in a direction perpendicular to that unit area. Simple manning calculator circular culvert geometry noncircular channel geometry mannings n coefficients q va specialty programs. Following are k factor and offset values for best results with each available fct model.

Then input leg length a and b to get the flat size of the sheet. If you activate flash, you can still use it by clicking on the following link. A flow rate of 150 usgpm through a 3 globe valve with a c v of 105 us units would result in a pressure drop of 2. With our flow calculator you determine the flow velocity, the flow rate and the pressure loss in relation to the internal pipe diameter and nominal diameter. The textbook definition of the k factor is the time rate of steady heat flow. Just click the button above and download button on the opened window afterwards, and wait for download to complete, as. As the k factor increases so does the resistance to flow. I have a pipe exitting into a larger plenum, i assume this is best represented as a sudden enlargementin this case how does one determine when it is appropriate to use k1 vs k2. Input material thickness and and inner radius to get the data of k factor, y factor, neutral layer. Modelling and sizing an orifice with pipe flow expert. Knowing the k factor for each calibration point, the factory determines the best fitting k factor for that particular flowmeter. Pipe fittings loss calculations with k factors pipe flow software. Determine l friction loss in pipe fittings in terms of equivalent length in feet of straight pipe.

The application presented here can be used to calculate the overall k factor based on the fittings in a piping segment. Pipe flow expert is a program for designing and analyzing complex pipe networks where the flows and pressures must be balanced to solve the system. This could be done through the api with a autodesk ductname. These first 3 options allow any one of pressure drop, pipe size inside diameter or flowrate to be calculated when the other two are given.

A fittings k factor allows the pressure drop across the fitting to be calculated for a specific velocity of fluid flow through the pipe fitting. This calculator also computes the reynolds number, friction factor, and pressure drop through the pipe and will account for either laminar or turbulent flow. The following notes explain how to model and size an orifice. I had a question on k factors for our 3d modeling software. The axial design of turbine flow meter is inherently linear within a known turndown range, typically 15. Using the pressure boundaries in pipeflo to set a pressure drop of 3. Select the appropriate k value for such and select d and f for schedule. If other is selected, k factor and offset information may be entered directly. Pipe pressure drop calculator aioflo katmar software.

Choose meter type choose meter type ex810ex820 ex110 ex150 ex210 ex250 ip810ip820 ip110 ip210 ip150 ip250 tx810tx820 tx110 tx210 tx150 tx250 k factors for tx series flow. Calculations for gravity flow in a circular pipe, like a storm sewer, are done with open channel flow equations, and will not be discussed in this course. K factors can be determined by using the following equation. Friction losses are a complex function of the system geometry, the fluid properties and the flow rate in the system. K factors are listed among the specifications for fire sprinkler systems. Components can be specified using fixed resistances cv, ld, or k factor, or resistances that are a function of flow rate, size, or any arbitrary parameter specified by the user. Dfs is a must for the engineering professional who needs. The flow factor is the metric form and a simple conversion factor shown below can be used. I have a pipe exitting into a larger plenum, i assume this. The nature of flow in pipe, by the work of osborne reynolds, is depending on the pipe diameter, the density and viscosity of the flowing fluid and the velocity of the flow. Cadre flow is a hydraulics engineering application for windows. Choose meter type choose meter type ex810ex820 ex110 ex150 ex210 ex250 ip810ip820 ip110 ip210 ip150 ip250 tx810tx820 tx110 tx210 tx150 tx250 k factors for tx series flow meters are valid only for meters purchased after january 1, 2011. Alternatively, simply contact technical support for further information. A k factor is introduced to compensate for the nonuniform profile of pipe flow.

K factor calculator for fittings pipe flow calculations. Friction losses in pipe fittings resistance coefficient k. In regards to the pipe exit k factor calculator, it appears that regardless of the geometry, whenever flow exits a pipe, the k factor is 1. Within the pipe flow wizard software the type and quantity of bends, valves and other fittings associated with the pipe can be set by amending the quantity values on the pipe fittings screen. Pressure drop in pipe fittings and valves katmar software. Typical kfactor of rupture disc relief devices forum. Pipe flow software pipe pressure drop calculations pipe fitting losses pipe fittings, valves and bends usually have some associated k factor or local loss coefficient, which allows the calculation of the pressure loss through the fitting for a particular fluid flowing at a specified velocity. The flow coefficient c v is defined as the flow rate of 60f water in gpm which can be passed by a valve with a pressure differential of 1 psid. May 06, 2020 flow in pipes, ducts, open channels, culverts, hydrology, groundwater. K is the a constant for all fluids given design of meter. Flow meter kfactor and calculations instrumentationtools.

Design flow solutions is a fluid flow software suite which provides the engineer with a range of computer tools to solve fluid flow problems. K flow coefficient equivalent length compare equivalent length ratio to pressure drop ratio pipe l orifice l pipe pressure drop orifice pressure drop b total mass flow rate quality pressure drop, given mass flow and pressure in steamwater at saturated conditions ipc2004721 r12 a b m2 property correlations for all correlations, t deg c. Calculating head loss in a pipeline pumps and systems. This pressure drop would not be affected by the roughness of the pipe attached to it. Typical kfactor of rupture disc posted in relief devices forum.

The compensated kfactor is then used as the basis for all flow calculations. We can also use k factors for many other applications in fire hydraulics such as flow from a fire hydrant, wet riser outlet, hose reel or foam monitor. In fact, the list is almost endless and this is why it. Relative roughness an overview sciencedirect topics. On the other hand, in fully developed turbulent flow, for reynolds numbers over 2,0002,300 and for a rough pipe, friction factor is a sole function of the pipes relative roughness. Kfactor formula for fire sprinklers hydraulic calculation. The values of c i given in this handbook include the local pressure losses in the. Last months column explored the effects that oversizing a pump has on the motor driving the pump, the adverse results of a pump no longer operating at its best efficiency point bep for extended periods of. Cadre flow evaluation fully functioning software overview. K k factor associated with a specific type and size of fitting v fluid velocity ms or fts g 9. Energy grade line egl computations begin at the outfall and are worked upstream, taking each junction into consideration.

They do that for instance by averaging all k factors, or use another appropriate mathematical method. Diverging tee straightflow pipe k factor equation with. The compensated k factor is then used as the basis for all flow calculations. Pipe flow wizard pipe fittings pipe flow software for. The k factor is the frequency divided by the flow rate 1s gs 1g. Flow sensors tech spec k factor, offset and suggested operating range model description k factor offset suggested operating range gallonsminute suggested operating range litersminute suggested operating range cubic metershour brass tees fs200b 2 brass t flow sensor 2. Jun 14, 2011 usually, insulation materials have a k factor of less than one. The k factor is the ratio of the neutral axis location t to the material thickness mt. Reducer equations in crane tp410 engineered software. The density and viscosity of a variety of liquids and gases are coded into the pipe flow program, but you can alternatively select user defined fluid and. Pipe flow software for pipe pressure drop calculations. The 2009 edition of the crane tp410 includes a new chapter, chapter 3. Pipe flow wizard is able to perform four different flow and pressure drop calculations on a single pipe depending on the known information.

All rosemount 8800 vortex flowmeters are calibrated in schedule 40 pipe. The method presented here is based on computational fluid dynamics cfd and experimental measurements. Dfs is a must for the engineering professional who needs fast reliable reference information and solutions to fluid flow problems. Barometric compensation with optional depthtowater setting 983. Colebrookwhite equation an overview sciencedirect topics. May 14, 2011 in regards to the pipe exit k factor calculator, it appears that regardless of the geometry, whenever flow exits a pipe, the k factor is 1. Cadre flow is developed using the basic principles of finite element method as applied to to a piping system. Pipe flow expert sprinkler k factors pipe flow software. We have a requirment to use our own numbers for the k factor calculation for pipe fittings. Configuration b is the configuration when the branch pipe has the greatest flow, so branch in for.

Mar 07, 2018 when you bend sheet metal, the neutral axis shifts toward the inside surface of the bend. They are dimensionless numbers used to calculate the flow and pressure of water discharged from sprinkler heads, according to hydronics engineering. Pipe flow rate, pressure and friction factor in isothermal compressible gas flow the flow in long pipelines closely approximates isothermal conditions. You can however model an orifice by using a fitting with the appropriate k factor or by using a component with defined flow versus pressure loss performance. Jan, 20 also, looking at the k factor calculation for sudden and gradual contraction in the k factorfittings calculator. Similarly, the flow coefficient k v represents the flow of water in m. Dear all, as per the api 521 sixth edition table 9 typical kfactor for pipe fittings it has been specified as below. Configuring seametrics sensors for depthtowater, elevation, or staff.

From extensive testing done in piping with different inside diametersschedules, emerson has observed there is a small k factor shift for changes in process pipe. K flow coefficient equivalent length compare equivalent length ratio to pressure drop ratio pipe l orifice l pipe pressure drop orifice pressure drop b total mass flow rate quality pressure drop. Pipe flow background the term pipe flow in this course is being taken to mean flow under pressure in a pipe, piping system, or closed conduit with a noncircular crosssection. Usually, insulation materials have a k factor of less than one. The focus will be on the methods for calculating the minor losses in pipe. Pipe fittings, valves and bends usually have some associated k factor or local loss coefficient, which allows the calculation of the pressure loss through the fitting. Hunter controllers allow selection of the correct pipe size by fct model number. If i enter the data into the calculator as follows. For other pipe sizes, statistical kfactors may be available in the online kfactor calculator tool. Dimensionless reynolds number is used, and is combination of these four variables and may be considered to be ratio of dynamic forces of mass flow to the shear stress due to. Unlike the friction factor in the colebrookwhite equation, the c factor increases with the smoothness of the pipe and decreases with an increase in pipe roughness.

For control valves, the valve capacity and flow characteristics are typically expressed in terms of a valve flow coefficient c. If the piping were galvanized steel with a roughness of 0. This k factor should be used along with the pressure drop calculator to account for total frictional losses in a piping system. Open channels culverts manning equation detailed calculators. For other pipe sizes, statistical k factors may be available in the online k factor calculator tool.

Kfactors, yfactors, and press brake bending precision. The metric equivalent of the flow coefficient c v is based on the sisystem and is called the. Calculating resistance coefficient k from c v or k v. The pipe flow expert software does not currently contain a specific orifice component. Pipe flow software located at springfield house, water lane, wilmslow, cheshire, sk9 5bg, england. Pipe flow wizard does not allow the use of equivalent length of pipe. Software major head losses pressure drop head loss mecaflux. Then input the bend angle to get the arc length, bend allowance and bend deduction. The real meaning of k factor is that the flow in gpm can be discharged from the nozzle when the pressure is 1 psi. Pressure drop in a pipe due to fittings such as elbows, tees, valves, expanders and reducers based on 3k and 2k method. If d is in ft, then l eq is in ft equivalent length equation. This k factor should be used along with the pressure drop calculator to account for. Resistance coefficient k from cv or kv engineered software. The k factor of a fitting may be calculated from the equivalent length eq.

There exists a transition region between smooth wall flow and fully developed turbulent flow where the value of friction factor is determined by both n re and k. Pipe flow software helps engineers design, analyze, and calculate flow rates and pressure drops throughout a pipe network, where it is critical to understand. We can also use kfactors for many other applications in fire. Checalc chemical engineering calculations to assist process, plant operation and. Within the pipe flow wizard software the type and quantity of. Confounded by standpipe calculations nfpa fire code. Pipe flow expert allows the modelling of a sprinkler through the generic component object, through the definition of the performance characteristic, either by specifying a sprinkler k factor, or by specifying a. A detailed tee in aft software refers to any tee junction with the loss. Pipe flow software for professional engineers is used in over 100 countries worldwide, by over 3000 companies and consultants, wherever there is a need to calculate pipe flow and pressure loss. For other pipe sizes, statistical k factors may be available in the online kfactor calculator tool. To help you begin ive included a kfactor chart below which contains common kfactor starting points, good for general fabrication, for steel, aluminum and stainless steel. The program is capable of computing minor and major pressure losses pipe.