I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chementator Briefs
Light-emitting Si Researchers from Eindhoven University of Technology (TUE; the…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment PDF Business & Economics

Heuristics Rules for Process Equipment

By A. Durand, J. Miguel, G. Barroso, M. Garcia, and J. Angeles |

    Provided that they are updated when appropriate to keep them relevant, time-tested heuristics rules based upon experience, also referred to as rules of thumb, can be useful for the design, specifying and operation of several kinds of equipment used in process plants. The first and foremost heuristic rule is that the engineer should not shy away from using heuristics – and the second rule is that he or she should not rely blindly upon them. Presented here are a wide range of heuristics, classified according to major kinds of typical process equipment or activity.   Fluid handling   Fans are suitable for raising gas pressures moderately (for instance, by 3%, or by 12 in. of water); for higher pressures up to about 40 psig, blowers are suitable; for yet higher pressures, employ compressors (however there is overlap between the operating ranges of blowers and compressors)   Typical polytropic efficiencies for large centrifugal compressors are about 76 to 78%; rotary compressors normally have efficiencies around 70%, except for liquid-sealed ones, which have efficiencies around 50%   For pipe lines of diameter D in inches, typical fluid velocities and pressure drops are as follows: (a) for pump…
Related Content
Focus on Valves
Rotary valve controls the flow of powders and granules The Coperion ZRD Heavy-Duty Premium rotary valve (photo) is designed for…
Handling Bulk Solids
High-level detector has mercury-free tilt switch The patent-pending BM-TSM tilt switch (photo) used for high-level detection of powders and bulk…

ABB

The Big 6 level measurement technologies, where to use them and why

ON-DEMAND WEBINAR The Big 6 level measurement technologies, where to use them and why In this session, MS Sreekeanth, a Global Product Manager in ABB’s Measurement & Analytics business, will discuss the typical advantages and applications for…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Video - Do you really need a thermowell?
Hydrofluoric acid alkylation (HFU) unit optimization
The Big 6 level measurement technologies, where to use them and why
Upstream Oil & Gas: Automation intelligence from wellhead to distribution
6 benefits to expect from a measurement partner

View More