
|
Not all
applications are created equal. Elevated temperatures, increased
pressures, abrasion, corrosion, increased capacities, and high viscosity
liquids are just a few of the problems fluid handling engineers
may encounter. Fortunately, rotary pumps are versatile and can be
adapted to overcome such challenges.
Please browse our library of topics below.
Check back periodically as Professor Pump adds more topics and tough
applications to the list. If you have an idea for a topic or liquid not
adequately covered here, please send your idea to Suggest
A Topic. Professor Pump will evaluate all ideas and respond to the
ones which benefit the widest range of audiences. For help with unique
challenges, contact the professor directly at Ask
Professor Pump.
|
|
|
|
Handling Abrasive or Corrosive Liquids
(.pdf) |
|
Handling
abrasive liquids such as paint, ink, waste oils, and filled polymers are
core applications for rotary PD pumps. As are corrosive liquids
such as acids. This document details construction and handling
considerations to employ for these tough applications. |
|
|
Efficiency and Life Cycle Costing
(.pdf) |
|
At the
date of purchase, all too often the hidden costs of maintenance, repair
parts, and energy are overlooked even though they can account for 70-90%
of the total life cycle cost of a pump. This document focuses on
the high cost of energy over the life of a pump and examines some
solutions to combat it. |
|
|
Fluid Power and Rotary Gears (.pdf) |
|
A site
devoted to rotary PD technology would be remiss not to mention the
significant role gear pumps play in the hydraulic industry. This
document examines the PD gear's role as a hydraulic pump, hydraulic
motor, and rotary flow divider. Of course this only scratches the
surface of this much broader topic. |
|
|
Pumping Fuel and Fuel Oil (.pdf) |
|
Refining,
transferring, and dispensing fuels is one of the most common
applications of rotary PD pumps. This document highlights several
different fuels and applications, varying from diesel fuel, to bunker C,
to LP gas. |
|
|
|
Pumping High Temperature Liquids (.pdf) |
|
From
handling room temperature solids like asphalt, bitumen, sulfur, or wax
to handling heat transfer oils which can be upwards of 750�F / 400�C,
this document covers the full spectrum of construction and handling
considerations necessary for pumping these difficult liquids. |
|
|
|
Net Positive Suction Head (.pdf) |
|
This
document explains in plain language the often misunderstood subject of
NPSH and its effect on rotary PD pumps. This document should
answer: "What is NPSH?", "How do I calculate it?", and most
importantly, "What can I do if I already have an NPSH problem?" |
|
|
|
Liquid Containment (.pdf) |
|
From
simple shaft packing to single face mechanical seals, to sealless
magnetically coupled pumps, this document outlines the various liquid
containment options for rotary pumps. |
|
|
Shear Sensitive Liquids
(.pdf) |
|
Perhaps no
other topic is as misunderstood as shear. This document clearly
and succinctly explains how shear is defined, the various types of shear
sensitive liquids |