HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Guest Blogs

Understanding Gas Flow & Measurements

NO RATINGS
View Comments: Threaded|Newest First|Oldest First
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.

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.

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.

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.

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.

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.

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

Partner Zone
More Blogs from Guest Blogs
Feature-advantage-benefit could help engineers in how we approach design problems, how we sell our ideas to management, and how we market ourselves when it comes to jobs.
Many diverse markets take advantage of semiconductor IP; so many that no one can recite the entire list without leaving off several. So why do we track all the vertical markets? They all have a unique set of requirements and value attributes differently. One major vertical market segment is automotive.
Watch BMW's newest electric car, the i3, being charged with an everyday Home Depot-rented, gas-powered generator.
Asking yourself the simple question, “Is this a strength problem or a stiffness problem?” can prevent many design mistakes.
In November, a European space probe will try to land on the surface of a comet moving at about 84,000 mph and rotating with a period of 12.7 hours. Many factors make positioning the probe for the landing an engineering challenge.
Design News Webinar Series
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
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
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Sep 22 - 26, MCU Software Development – A Step-by-Step Guide (Using a Real Eval Board)
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: September 30 - October 2
Sponsored by Altera
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