The calculation uses a unique polynomial equation for polytropic head per stage based on hte calculated molecular weight of the gas mixture. Gas database with GPSA properties included, expandable by up to four user entered gases. Selectable compressor frame data (or user entered data). Suction and discharge compressibility factors calculated using Redlich-Kwong EOS. Alternative calculations for rotational speed, impeller tip speed, polytropic head per stage, and impeller diameter included.
Includes both SI and Imperial units.
Results tested and in close agreement with HYSYS simulation software.

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Define your fluid flow system and this calculation procedures will take you through the step by step calculations to find the minimum recommended valve closing time as well as the resulting pressure experienced if the valve closes too quickly. Help sheets included are the standard pipe sizes and listings of standard fluid and pipe material properties. All equations and units are shown so that you can easily follow the calculation.

This title is available to our ChE Plus members. Learn more about ChE Plus here.

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Use this calculation to predict the performance and power draw of a centrifugal fan at various operating conditions. Provide the process flow, pressure rise and density for the base design case operation. Provide base case fan efficiency, motor rpm, drive belt ratio and rotor diameter. Calculate shaft power and performance at alterative speed, temperature and density using the Fan Laws. The calculation uses SI metric units.

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Calculate the friction factor associated with piping enlargements. These friction factors can then be used with the Fanning or Darcy relations for pressure loss calculations. Complete with piping size data and interpolated friction coefficients from Crane Technical Paper 410. Also includes factors for valves and fittings. Includes both English and Metric units of measure

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Find the net positive suction head available for a piping system including pipe runs, valves, fittings, and elevation changes. Includes physical propeties for common fluids, standard pipe tables, and pipe material data. Includes both English and Metric units of measure

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Quickly estimate the necessary overflow line size for vessels and tanks with this spreadsheet tool. Includes properties of common fluids and standard pipe data. The overflow capacity is also calculated. Includes both English and Metric units of measure

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Based on data from the Gould’s Pump Manual and Crane TP 410, this spreadsheet will assist the user is determine the pressure drop in a paper pulp line. Includes frictional losses for valves and fittings as well as data for many different types of paper pulp. Includes both English and Metric units of measure

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Calculate the flow of common paper stock through an inclined upper lip, vertical slice, and a 45° slice. Based on combined formulas from Tappi’s Fluid Mechanics Committee. Includes both English and Metric units of measure

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Quickly calculate a flow or pressure drop for a new condition based on an existing condition with this Law of Squares Calculator.

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Get a graphical representation showing a system curve versus your vendor supplied pump curve. Includes elevation differences.

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Calculate the flow of liquid through a weir. Calculations are provided for rectangular and triangular 90° shapes. Includes both English and Metric units of measure