| Efunda |
| This online site provides some calculators that may be of interest to chemical engineers. Calculators include unit conversions, gage calculator, hardness approximation, Reynolds number, pipe friction, and venturi flowmeter. |
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| Industrial Filtration Calculators |
| Need help selecting equipment for an industrial filtration? How about some help with a sedimentation velocity calculation? This site contains online calculators to help with these tasks. Also included is a tool to estimate the specific resistance to filtration from a particle size distribution provided by the user. |
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| Equipment Costing |
| Online equipment cost estimating from Matches. This Java powered online calculator provides cost estimates for a wide variety of process equipment. The correlations are not discussed, so judging the accuracy is difficult. Costs are expressed in year 2000 U.S. dollars. |
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| LMNO Engineering |
| Online calculators including hydraulics of open channels, tank discharges, pipe friction factors and head losses, and groundwater calculations. Some calculations are free while other require a $20 registration fee. |
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| McCabe-Thiele Calculator |
| Calculate the number of theoretical trays needed for your distillation column via the McCabe-Thiele method. |
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