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Design
Categories
Online Units Conversion
Heat Transfer
Fluid Flow
Vessels
Filtration
Physical Properties
Financial Calculators
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There are many useful design tools to be found on the
internet and I have no intention of writing new ones. However, here are
links to those that I have found most useful. This does not, of course,
imply any endorsement or accept any liability for errors incurred in their
use.
Look at the CHE
Resources Free Software page for a good reference source of on-line
calculators. Other good sources include the Process
Associates, Jahar,
Efunda and Freecalc
sites (all referenced on CHE) Spirax
Sarco and Engineers
Edge.
Online Units Conversion
Heat Transfer
Fluid Flow
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Reynolds
Number This calculator quickly gives you the
Reynolds Number for a flow over a plate or a flow in a pipe.
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Pipe
Friction This calculator tells you the
Reynolds number, pressure drop, and flow rate for a constant cross-section
pipe.
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Venturi
Flowmeter This calculator outputs the flowrate
through a venturi constriction for a given pressure drop.
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Applications from Freecalc
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On-Line
Friction Piping Loss Rigorous calculation of
the pressure loss for flowing liquids, based on liquid properties, flow, and
piping configuration (pipe length, fittings, and valves). Results can be
printed out or "cut and paste" into other applications.
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On-line
Compressible Flow Pressure Loss Rigorous
calculation of the pressure loss for flowing gases, based on as properties,
flow, and piping configuration (pipe length, fittings, and valves). Results
can be printed out or "cut and paste" into other applications.
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On-Line
Liquid Friction Loss for any Pipe Size This
application determines the pressure loss due to friction in any sized
straight pipe or tube. This is useful when dealing with very small piping or
tubing or for flow though small channels. This application is only
applicable for straight pipes, and cannot accommodate losses due to fittings
and valves (it does include inlet and outlet losses though). If standard
sized piping is being used then the application above "On-Line Friction
Piping Loss" should be used.
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On-Line
Gas Friction Loss for any Pipe Size This
application determines the compressible gas pressure loss due to friction in
any sized straight pipe or tube. This is useful when dealing with very small
piping or tubing or for flow though small channels. This application is only
applicable for straight pipes, and cannot accommodate losses due to fittings
and valves (it does include inlet and outlet losses though). If standard
sized piping is being used then the application above "On-line
Compressible Flow Pressure Loss " should be used.
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Design
of Self-Venting Piping How
to size piping that is self-venting for vertical pipes, and side outlet
applications.
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Open
Channel Flow in Circular Pipe Open
channel flow in pipes based on Manning's Equation.
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Gas
Density Calculator Gas density and specific
volume calculation based on system conditions and compressibility factor.
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Flow
coefficients for flow through valves - water and steam
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Pipe
sizing for steam and condensate flow
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Orifice
sizing from flow rate and flow coefficient
Vessels
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Determining
Volumes in Partially Filled Vertical Vessels This application calculates
the partial volumes of vertical vessels with Ellipsoidal, Hemispherical,
Flat, or Conical heads
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Draining
Time for Vertical Tanks Determination of the
time it takes to drain a vertical tank including the resistance of the
outlet piping. This program calculates the draining time between any two
levels in a vessel with a flat, elliptical, or hemispherical bottom head.
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Heat
Loss from vertical, horizontal and rectangular tanks
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Wall
thickness of pressure vessels - shell and ellipsoidal end
Filtration
Physical Properties
Financial Calculators
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Loan
Calculator This calculator takes any two of
the three variables (Loan, Interest Rate, and Number of months) and gives
the answer for the remaining one
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APR
Calculator This calculator gives a full
definition of APR and helps you determine it for a given interest rate and
points cost.
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