Description

SF Pressure Drop 6.2 for Windows calculates pressure drops of flowing liquids and gases in pipes (laminar and turbulent flow). Additional it's possible to calculate pressure changes caused by vertical difference of pipe and caused by changes of kinetic energy.
SF Pressure Drop calculates also pressure drops in pipe elements (example: changes of direction) and in diverse fittings (valves, bellows etc.). A list of the calculable elements see below.
It's possible to combine diverse elements and so you will get total pressure drop.
To calculate pressure drop you need data of pipes (rougness) and data of flow medium (density, viscosity). These data are available in several databases. An additional possibility to save your own data is the user-defined database.



Further features
Database Standard Parts (EN/ISO/DIN/ASME/ANSI)
Dimensions and inner diameter of

Circular pipes
Rectangular pipe
Bends
Contractions
Enlargements

Tees



Database of properties of liquids and gases and property calculation (density, viscosity)

Calculation of properties of water and steam according Industry Standard IAPWS-IF 97 (all conditions within the range 0 to 900 °C and 0 to 1000 bar are calculable)
Properties of air
Properties of miscellaneous liquids and gases: Besides the properties, which are available as measured values you can estimate properties of more than 300 gases and liquids at different temperature and pressure. You can also estimate mixtures.
Estimation of refrigerants at different temperature and pressure
Estimation of aqueous solutions
Estimation of heat trensfer oils




Further calculation methods

Quick pump design
Calculation of pressure drop dependent on rate of flow (showing and printing the characteristic curve)
Channel calculation and design according Manning-Strickler
Discharge calculations (constant and decreasing liquid level)
Orifice design
Calculation of an economic pipe-diameter at a known rate of flow
Calculation of NPSH; the needed vapor pressure and density are available in a database
Calculation of pipe volume and filling time of the whole project or of a part of the project
Conversion of rate of flow to velocity and inverse at a known pipe diameter
Conversion from normal-m³ to working-m³
Conversion from kv value to resistance coefficient
Conversion from Cv value to resistance coefficient




Miscellaneous

Input of data of pipe element and flow medium in a lot of units (metric and US units); output in metric or US units
Database of resistance coefficients of fittings, editable and extensible by the user
Possibility to save and open SF Pressure Drop project-files

Printing the calculation table: Page preview and arranging





SF Pressure Drop calculates the following pipe elements:



Straight pipes
Circular pipe, rectangular pipe, circular ring, channel, corrugated pipe, other forms


Pipe entrances
Sharp edged entrance, rounded entrance, sharp edged entrance with angle, inward projecting pipe entrance


Changes of section
Sudden and gradual enlargement, sudden and gradual contraction


Bends
Circular bend, bend of segments, cast iron bend, rectangular bend, miter bend circular, miter bend rectangular


Brandings of current
Tee sharp edged, tee globular, tee rounded bottom plain, tee globular neck rounded, branch flowing asunder, branch flowing together, y-pipe straight, y-pipe bent


Bellows
Compensator corrugated tube, lyra-bend, u-bend


Valves
Globe valve, globe valve y-pattern, angle valve, gate valve, cock, swing valve


Check valves
Check valve globe lift, check valve y-pattern globe lift, check valve swing


Nozzles and orifices
Orifice ISO 5167, orifice sharp-edged, orifice round-edged, orifice thick-edged, nozzle, long radius nozzle, venturi tube


Perforated plates
Perforated plate thin circular, perforated plate thin rectangular, perforated plate thick circular, perforated plate thick rectangular


Strainers and grids
Metal grid circular, metal grid rectangular, metal wire circular, metal wire rectangular, two-plane screen circular, two-plane screen rectangular, y-strainer, screen basket filter, conical strainer


Diverse
Vertical difference, resistance coefficient





Requirement
Windows 98/ME/NT/2000/XP