CR4 - The Engineer's Place for News and Discussion®

Mechanical Engineering
01/19/2015 8:30 AM

See all Forum Threads

Section Forums

Mechanical Engineering

15934 threads, 119131 comments (32 Viewing)

Cathodic Protection Of Tubes In Shell & Tube Heat Exchanger

01/26/2015 by nightcrawler
Our Cl2 liquifier is of the following type: It is entirely made of mild steel (shell as well as tubes plus the connecting pipelines). At shell side...
Views: 115, Comments: 10
Last comment 01/27/2015 by nightcrawler

Superhydrophobic Metal and Heat Transfer

01/22/2015 by James Stewart
Question: Could a superhydrophobic metal surface still be useful in a heat exchanger? An article inspired my thinking here:
Pathfinder Tags: heat transfer laser surface modification superhydrophobic material
Views: 187, Comments: 23
Last comment 01/26/2015 by Tornado

Superheater Tube Arrangement in Steam Boiler

01/21/2015 by Md. Muhiminul Bari
how can i select the number of tubes of a superheater through which the steam flows in steam boiler. As I know the total steam flow of the boiler, to...
Pathfinder Tags: superheater design
Views: 143, Comments: 5
Last comment 01/21/2015 by lyn

ASME Section IX

01/20/2015 by Muhammed Afsal
Dear All, can anybody explain what is the difference between Table QW-451.1 and QW-451.2 of ASME Section IX ??? If the difference is Transverse-Bend...
Views: 111, Comments: 1
Last comment 01/21/2015 by PWSlack

ASME B16.34 / Body Minimum Wall Thickness

01/19/2015 by krkim
at B16.34 / 6.1.2 Inside diameter, Any one can explain me the inside diameter of safety valve 1. Inside dia. of seat 2. body inside dia. Thank yo...
Pathfinder Tags: ASME b16.34 wallthickness
Views: 116, Comments: 5
Last comment 01/21/2015 by PWSlack
Go to this Forum

See all Blog Entries

Section Blogs

Mechanical Components Blog

120 blog entries, 902 comments (0 Viewing)

Energizing the Era of the Exoskeleton

01/19/2015 by IHS GlobalSpec eNewsletter
The dream of using powered mechanics to increase the strength of human operators is finally marching forward. Exoskeletons have been trapped inside...
Views: 106, Comments: 1
Last comment 01/20/2015 by micahd02
Go to this Blog

Valve Technology Blog

72 blog entries, 566 comments (0 Viewing)

The Keyboard is the New Cyberwar Weapon

01/14/2015 by IHS GlobalSpec eNewsletter
It is a new kind of war, one thought by many to have its genesis with the Stuxnet computer worm that in 2009-2010 crippled Iran's nuclear program by...
Views: 156, Comments: 6
Last comment 01/14/2015 by Calnet42

Methane Leaks to be Targeted as Climate Concern

11/04/2014 by IHS GlobalSpec eNewsletter
The Obama administration's climate plan may target the methane leaks from valves, pipes, and other components used to produce natural gas. Methane...
Views: 347, Comments: 38
Last comment 11/09/2014 by kramarat

Water Upgrades are a Boom to Economy

11/02/2014 by IHS GlobalSpec eNewsletter
Water infrastructure upgrades mean more than just safe and efficient collection, treatment, and distribution of water and waste: the upgrades are...
Views: 228, Comments: 4
Last comment 11/05/2014 by kramarat
Go to this Blog

Hydraulics Blog

62 blog entries, 461 comments (0 Viewing)

Simulations Speed System Validations

12/28/2014 by IHS GlobalSpec eNewsletter
An extensive Fluid Power Journal tutorial highlights the utility of fluid power system simulations and how they save development time (and funds) by...
Views: 114, Comments: 0

Hydraulics Powers One-off Chinese Swing Bridge

08/31/2014 by IHS GlobalSpec eNewsletter
When Chinese engineers built a highway overpass, they could not disrupt the high-speed rail line the roadway would straddle. Instead they built th...
Views: 593, Comments: 3
Last comment 11/20/2014 by TongueAang
Go to this Blog

Workbench Creations

154 blog entries, 1956 comments (0 Viewing)

Del's DIY Bow Making Thicknesser

10/25/2014 by Del the cat
I'm not into laminated and backed bows in a big way, but decent Yew is scarce so its good to make the best use of the available wood. That means using...
Views: 479, Comments: 19
Last comment 10/30/2014 by bluebelly
Go to this Blog

Motors Blog

71 blog entries, 1267 comments (0 Viewing)

What IoT Means for Motors

12/24/2014 by IHS GlobalSpec eNewsletter
You've probably been hearing a lot about the Internet of Things (IoT) lately, but have you heard what it can do for motors? If not, you may be in...
Views: 143, Comments: 0

Amorphous Iron: The Right Stuff for Motors?

06/17/2014 by IHS GlobalSpec eNewsletter
Engineers should know a couple of things about amorphous iron: it's not hard to come by and there are good reasons for using it in motors, according t...
Views: 659, Comments: 0

Motor Quartet Makes Sand Art

02/09/2014 by IHS GlobalSpec eNewsletter
This video shows how four stepper motors work together to produce eye-catching sand art. The accompanying article describes the drawing machine that u...
Views: 581, Comments: 1
Last comment 02/10/2014 by geraldpaxton
Go to this Blog

Motion Control Components

101 blog entries, 931 comments (0 Viewing)

Controlling Machines from Your Eyeglasses

12/23/2014 by IHS GlobalSpec eNewsletter
At first, it may have been easy to ignore the ubiquitous reports on Google Glass. Reasonable to figure that there might not be much behind the hyp...
Views: 122, Comments: 0

A New Approach for Controlling Condition Monitoring

06/02/2014 by IHS GlobalSpec eNewsletter
The prevalence of around-the-clock condition monitoring is skyrocketing as sensing technologies become smarter, easier to implement, and more affo...
Views: 542, Comments: 0

The Swift Switch to Single-cable Servo

02/28/2014 by IHS GlobalSpec eNewsletter
The dualistic world of analog and digital feedback is fading fast. Digital signals are beginning to take precedence for communication between servo dr...
Views: 559, Comments: 1
Last comment 02/28/2014 by BIN95
Go to this Blog

Pneumatics Blog

96 blog entries, 635 comments (0 Viewing)

Pneumatics Help SpaceX Pursue "Out-of-This-World" Goals

11/15/2014 by IHS GlobalSpec eNewsletter
Despite recent catastrophes, the call for space exploration will continue. California-based SpaceX, a space transport services company, is pursuin...
Views: 233, Comments: 1
Last comment 11/17/2014 by rashavarek

Fluid Power to the Rescue

10/15/2014 by IHS GlobalSpec eNewsletter
Researchers are using both pneumatic and hydraulic power in efforts to help patients suffering from crippling injuries. In this article, Hydraulics...
Views: 239, Comments: 0

Energy Storage Solution in the Bag?

09/13/2014 by IHS GlobalSpec eNewsletter
Can air and water combine to meet the challenge of storing energy from renewable sources? A Canadian start-up company called Hydrostor thinks so....
Views: 528, Comments: 16
Last comment 01/23/2015 by kennynabb6
Go to this Blog

Pump Technology Blog

76 blog entries, 542 comments (0 Viewing)

Motors Matter: Understand the Differences Between Immersible and Submersible

10/02/2014 by IHS GlobalSpec eNewsletter
Pumps & Systems presents this educational essay explaining the key design characteristics and application criteria pumping system designers an...
Views: 424, Comments: 0

Treating a Treater's Chemical Dependency

02/18/2014 by IHS GlobalSpec eNewsletter
When a Washington state wastewater treatment plant replaced traditional tube-element peristaltic pumps with a new metering pump, its chemical costs d...
Views: 585, Comments: 3
Last comment 12/23/2014 by Original_Macgyver
Go to this Blog

Drives Blog

68 blog entries, 883 comments (0 Viewing)

Mobile Strategy for Process Monitoring and Control

09/21/2014 by IHS GlobalSpec eNewsletter
Tablet computers, smartphones and other mobile wireless devices are infiltrating industry, for numerous reasons - portability, immediate data coll...
Views: 322, Comments: 1
Last comment 10/03/2014 by jdsighter

What's Driving Designers to Digital Simulation?

04/18/2014 by IHS GlobalSpec eNewsletter
The use of virtual design tools - motion-design software and related products - by mechanical, electrical, and control engineers receives the spo...
Views: 539, Comments: 4
Last comment 04/21/2014 by Brave Sir Robin

Networking to Sustain Capacity in the Process Industries

04/03/2014 by IHS GlobalSpec eNewsletter
A new white paper from the Open DeviceNet Vendors Association (ODVA) presents its vision for open process integration in the processing industry,...
Views: 415, Comments: 0
Go to this Blog

Other Blog Entries of Interest

GEA Co-Sponsors Technical Conference

03/27/2013 posted in GEA's Global HVAC Technology Blog
by larhere
We are pleased to be one of the sponsors of the 2013 ASHRAE Region VI Technical Conference being held May 1 and 2 in our hometown of La Crosse, WI. T...
Pathfinder Tags: GEA hvac industry HVAC technologies
Views: 172, Comments: 0

World's Tallest Building (A Prefab) - Update From China

03/20/2013 posted in GEA's Global HVAC Technology Blog
by larhere
We have been following this ambitious undertaking of building the world's tallest building, the 220 floor "Sky City", in an incredibly short three mo...
Pathfinder Tags: buildings china hvac fabricated buildings Prefab Buildings
Views: 889, Comments: 10
Last comment 07/22/2014 by RandallAvery

Supply Chain Insights - an Industry Veteran's View

03/13/2013 posted in GEA's Global HVAC Technology Blog
by larhere
In my thirty plus years in Strategic Supply Chain I have come to appreciate the constant evolution in our business. I'd like to share with you today...
Pathfinder Tags: global sourcing HVAC
Views: 246, Comments: 1
Last comment 03/14/2013 by JNB

Customer Centric Concepts – Unlocking the Secrets

03/06/2013 posted in GEA's Global HVAC Technology Blog
by larhere
The term Customer Centric Concepts came from our 25 years of experience developing and maintaining account relationships with Trane's National Account...
Pathfinder Tags: Customer Centric Concepts Customer Satisfaction HVAC Partners
Views: 241, Comments: 11
Last comment 03/12/2013 by Yusef1

HVAC Materials – An Evolution

02/27/2013 posted in GEA's Global HVAC Technology Blog
by psikorsky
This week GEA's PJ Sikorsky answers questions about materials used in HVAC products over the years. 1. What has been the biggest change in materials...
Pathfinder Tags: Corrosion HVAC Metallurgist materials materials selection New Refrigerants
Views: 412, Comments: 1
Last comment 08/26/2013 by 129CBRider

Ozone Layer Healing, But...

02/15/2013 posted in GEA's Global HVAC Technology Blog
by larhere
According to the ozone sensors on Europe's MetOp weather satellite, the hole over Antarctica in 2012 was the smallest in the last 10 years. Since...
Pathfinder Tags: Antartic hole global warming ozone layer
Views: 470, Comments: 24
Last comment 12/12/2013 by truth is not a compromise