Guest Blogs

Understanding Gas Flow & Measurements

View Comments: Newest First|Oldest First|Threaded View
User Rank
amyjohn   12/25/2012 3:44:02 AM
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

User Rank
bobjengr   12/5/2012 5:54:30 PM
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
Re: flow meter question
Joe Panfalone   11/27/2012 12:31:41 PM
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
flow meter question
scott clark   11/27/2012 10:50:59 AM

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
Re: Good explanation
Charles Murray   11/26/2012 7:04:42 PM
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
Re: Good explanation
Joe Panfalone   11/21/2012 12:22:03 PM
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.

User Rank
Good explanation
naperlou   11/21/2012 11:27:56 AM
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
More Blogs from Guest Blogs
Practicing engineers have not heeded Yoda's words.
Connected sensor-enabled applications will improve the consumer experience -- and generate new revenue streams.
As an industry, we now need to up our game and provide contractors with easier ways to properly identify and report counterfeit products and build collaboration between manufacturers, design engineers, industry organizations, and government.
Itís your job to find the right people, ask the right questions, to dig deeper, and properly prepare your users so they can provide you the most useful and productive answers possible.
The shift to aluminum is gaining momentum and the demand from automakers for aluminum is soaring, "expecting to reach one billion pounds this year, up from 200 million in 2012, and to grow by more than 30% annually through 2020."
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5

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: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service