HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
amyjohn
User Rank
Iron
Re: GLAS FLOW MEASUREMENTS
amyjohn   12/25/2012 3:44:02 AM
NO RATINGS
are are jimmy choo shoes outlet are so expensive that there are companies that are selling fake watches so that people will be to afford such important pieces just like a Rolex replica.  We cannot deny the fact that watches watches Replica Watches Online Shop watches are one of the fashion accessories that are commonly being worn these days. There have been that were made to match clothes, moods, and styles. However, as much as these kinds of timepiece timepiece Replica Rolex timepiece are being out in the market, being sold in bunches and groups, one kind of item does not lose value are those watches that have names such as Chanel J12 watch, Tag Heuer, Heuer, Jimmy Choo shoes 2012 Heuer, Omega, and the ever expensive Rolex watches. There are a few that can afford the real But to those who would like to have the real thing, without burning the pocket, you can can Beats by dre cheap can get Swiss replica watches that are fad these days. The trend in fashion is dictated in two One, matching and using styles to suit the lifestyle and mood of the person and two, wearing wearing Christian Louboutin Pumps Black wearing accessories and items that have been created by fashion icons. Depending on the availability of resources can be used wherever the individual is, he or she may opt to just use the first first Beats by dre cheap first choice if financial sources are limited or both, if it is necessary to flaunt a bit the items being sported together with the chosen fashion. Even just wearing fake Rolex watches or replica replica Cheap Beats by dre Solo replica Omega can already make a difference in how the person presents himself to the public. With the and materials for making genuine watches being accessible for many trades and markets, it is now possible possible Christian Louboutin Pumps Black possible for them to create perfect copies or just almost complete

bobjengr
User Rank
Platinum
GLAS FLOW MEASUREMENTS
bobjengr   12/5/2012 5:54:30 PM
NO RATINGS
Great article Joe.  I am involved with a client right now who is asking my company to design hardware to provide hydrolysis for 70,000 gallons of water per month.  The purpose being to provide H(2) for combustion.  Your post and calculation are valuable to that effort and have been saved and printed off.  Many thanks for the good description and the calculation. They will be used.

Joe Panfalone
User Rank
Blogger
Re: flow meter question
Joe Panfalone   11/27/2012 12:31:41 PM
NO RATINGS
The  short answer is yes. As the system pressure increases it presents more resistance to the compressor. Thus your flow rate will decrease. That is why you will see compressors rating at 40 PSI to be higher than and 90 PSI. The other point is that since your meter is calibrated for 100 PSI, readings will be inaccurate until that pressure is reached.

scott clark
User Rank
Iron
flow meter question
scott clark   11/27/2012 10:50:59 AM
NO RATINGS
Joe,

In a compressed air system where the system is at zero psig. a compressor is started and loaded to fill the system. Is it safe to say that the velocity is so great that the meter reading exceeds compressor rated value? I ask this because as the system pressure increased the flow decreased even though the compressor was still fully loaded. The meter is a mass flow design for 100 psig. system.

Charles Murray
User Rank
Blogger
Re: Good explanation
Charles Murray   11/26/2012 7:04:42 PM
NO RATINGS
I agree, Naperlou. Compressibility has always posed a measurement problem for engineers. Most engineers find it easier to simply steer clear of it. Joe does a nice job of laying out the basics.

Joe Panfalone
User Rank
Blogger
Re: Good explanation
Joe Panfalone   11/21/2012 12:22:03 PM
NO RATINGS
Thanks for the compliment, much appreciated. Being in the compressed air business it is surprising how little is known on the subject. Which is why I wrote it.

naperlou
User Rank
Blogger
Good explanation
naperlou   11/21/2012 11:27:56 AM
NO RATINGS
Joe, I like your explanation of gas flow measurements.  It is very clear and useful.  While many engineers do not deal with this aspect most of the time, it does come up.  It is nice to see it so well laid out, especially the measurement aspects.



Partner Zone
Latest Analysis
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The first photos made with a 3D-printed telescope are here and they're not as fuzzy as you might expect. A team from the University of Sheffield beat NASA to the goal. The photos of the Moon were made with a reflecting telescope that cost the research team 100 to make (about $161 US).
At Medical Design & Manufacturing Midwest, Joe Wascow told Design News how Optimal Design prototyped a machine that captures the wing-beat of a duck.
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
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: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Next Class: 11/11-11/13 2:00 PM
Sponsored by Littelfuse
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