HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Amclaussen
User Rank
Platinum
Re: Pump Efficiency
Amclaussen   8/6/2013 5:58:36 PM
NO RATINGS
You are welcome. In fact, I'm in the process of developing an intelligent control for centrifugal pumps, that will try to reduce droplet size degradation in emulsion handling processes intended to separate oily water. In that particular case, it is not energy savings or efficiency per se the most important goal, but to make the separation equipment smaller, more efficient or both.

apresher
User Rank
Blogger
Pump Efficiency
apresher   8/6/2013 5:21:55 PM
NO RATINGS
Amclaussen, What you're saying is so true and points out how much can be done to increase the intelligence and efficiency of these systems.  Thanks for your input.

Amclaussen
User Rank
Platinum
Yet, most pumps still are run at fixed speed...
Amclaussen   8/6/2013 4:17:09 PM
The sad reality, is that most process pumps in the world are still run at fixed speed, and being centrifugal, they are supposed to be "controlled" by throttling the fluid with a valve; wasting energy and causing the pump to run away from B.E.P. or Best Efficiency Point, which causes a lot of maladies and wears down the pump too soon.

Therefore, a strong effort should be made to get engineers aware of this inefficient operation mode, and make them understand that with present day Variable Frequency Drive prices vs. energy and increased maintenance prices, there is no excuse to continue running pumps together with pressure dropping valves.  An intelligent process control that takes advantage of the pump characteristic curve is in order.  Unfortunately, most pumps are not sold as an integrated Pump-VSD-Process Control system, and some fail to reach the potentially high savings and desirable overall life cycle costs, mainly because sometimes the hydraulics of the installation aren't properly considered and some problems arise.  Proper and through process design and verification, together with true and tested system components is required to avoid those problems before they appear. Amclaussen.

apresher
User Rank
Blogger
Servo-variable Pump Drives
apresher   8/5/2013 5:53:08 PM
NO RATINGS
Naperlou, Thanks for your comments. The interesting thing to me with this is the mixing of motion technologies (hydraulics and electric servos) with both each contributing their strengths to the application.  Plus the ability to bury some of the complexity of the hydraulic control. We'll be seeing more in this area moving ahead.

naperlou
User Rank
Blogger
More efficient motors
naperlou   8/5/2013 9:25:24 AM
NO RATINGS
Al, this is another great example of the appliction of control technology to improve efficiency.  I expect that the older systems that used fixed speeds did so because the control technology was not as developed and this was the easiest way to get reliable operation. 



Partner Zone
Latest Analysis
The new draw-it-on-a-napkin is the CAD program. As CAD programs become more ubiquitous and easier to use, they have replaced 2D sketching for early concepting.
These free camps are designed for children ages 10 to 18. Attendees are introduced to 3D CAD software and shown how 3D printers can make their work a reality. Here we check out the stops in California and Utah.
A University of Chicago graduate has invented a compact elliptical trainer that lets people work out at their desk while they work.
Dean Kamen told an audience at MD&M East 2014 that FDA regulators aren't to blame for stalling innovation in the medical device industry. Hear what he had to say.
Battery maker LG Chem Power Inc. plans to offer a new cell chemistry that could serve as the foundation for an affordable electric car with a 200-mile driving range by 2017.
More:Blogs|News
Design News Webinar Series
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 4 - 8, Introduction to Linux Device Drivers
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: August 12 - 14
Sponsored by igus
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service