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Home » Topics » Market Sectors » Green Mechanical Systems

Green Mechanical Systems
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Ray Wohlfarth

Ray Wohlfarth: Tips for high-efficiency boiler replacement

What could happen? Costly callbacks.
Raynew 200
Ray Wohlfarth
January 4, 2021
One Comment

It was such a simple project; replace the old cast iron boiler with a new condensing boiler.


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PHVAC industry

Dave Yates: Yesterday, today and tomorrow

Predictions for the future of the PHVAC industry.
Dave yates
Dave Yates
December 31, 2020
No Comments

Assembling prior columns, updating older information, along with some new content for the four eBooks has been an interesting review of my 48-years as a mechanical contractor. 


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Ethan Grossman

Ethan Grossman: Squeaky wheel gets the grease

Understanding friction concepts.
Ethan Grossman P.E., CPD
December 29, 2020
No Comments

Friction is everywhere. Even though friction finds itself in just about every system we design, it is one of those concepts that is not easily understood. 


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Movers and shakers

December PM Engineer Movers & Shakers

December 23, 2020
No Comments

Strategic Account Manager Joseph Keltos (second from left) recently celebrated a 20-year milestone at Telgian Engineering & Consulting. 


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PMI Virtual Conference

PMI wraps up successful virtual conference

Communication, supply chain disruption and COVID-19 among key issues discussed at annual event.
Nicole krawcke
Nicole Krawcke
December 22, 2020
One Comment

Plumbing Manufacturers International held its first virtual PMI20 Manufacturing Success conference Nov. 10-12. 


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PERC

Propane Council shares 3 commercial building trends for 2021

December 18, 2020
No Comments

PERC predicts three existing trends will see continued growth in 2021.


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Ethan Grossman

Ethan Grossman: It’s not rocket science

Design challenges are unpredictable.
Ethan Grossman P.E., CPD
December 7, 2020
No Comments

We engineers love our equations. Imagine asking an engineer a question, and they hold up a finger gesturing for you to wait quietly while they punch numbers into their calculator. 


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John Siegenthaler: Renewable Heating Design

John Siegenthaler: The anatomy of a municipal pellet boiler system

A thousand words plus.
Siegenthaler
John Siegenthaler P.E.
December 4, 2020
No Comments

I’m sure everyone reading this column has heard the adage “a picture is worth a thousand words.”  


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ASHRAE HQ

ASHRAE moves to new net-zero energy global headquarters in metro Atlanta

November 24, 2020
No Comments

A team of ASHRAE volunteers led a highly successful building campaign to garner support for the renovation project. Thirty-one corporate donors committed more than $9.7 million in monetary support and gifts of equipment and services.


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Medical Gas Piping

How to determine if a facility’s medical gas system is up-to-date

Proper installation and maintenance of medical gas systems are critical.
Tim Richards
November 19, 2020
No Comments

NFPA 99 Health Care Facilities Code provides performance criteria for healthcare facilities that follow a risk-based approach, where it is the risk posed to patients, staff or visitors that defines safety guidelines. 


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