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Home » Topics » Columnists

Columnists
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The industry’s best lineup of expert columnists including: Julius Ballanco, Dan Holohan, John Siegenthaler, Christine Swanson and Morris Beschloss.

Topics

Julius Ballanco

Julius Ballanco discusses codes and how they affect plumbing and mechanical engineers.

John Siegenthaler

John Siegenthaler gives a technical view of solar thermal systems.

Ethan Grossman

Ethan Grossman uses daily life stories to illustrate engineering concepts.

Christoph Lohr

Christoph Lohr provides insight into the latest business and professional trends for engineers.

David Dexter

James Dipping

Fire Protection

Discussions on new developments and codes in fire protection.

Dave Yates

Dan Holohan

Dan Holohan covers a wide breadth of hydronic heating-related topics but specializes in steam heating.

Ray Wohlfarth

Ray Wohlfarth’s talks about the installation, maintenance and repair of commercial boilers.

Editor's Note

Commentary from the editor of PM Engineer.

Guest Editorial

Letters to the Editor

ARTICLES

May is Building Safety Month

Nicole Krawcke: The importance of building codes

May is Building Safety Month.
Nicole krawcke
Nicole Krawcke
May 13, 2022
No Comments

Did you know that May 4 is National Skilled Trades Day? It also happens to be National Star Wars Day — “May the Fourth Be With You,” and all that jazz.


Read More
Formic acid corrosion, erosion

Dave Yates: Formic acid corrosion, erosion

Leaking line sets cause problems despite being protected by insulation.
Dave yates
Dave Yates
May 12, 2022
No Comments

I first encountered formic acid erosion/corrosion when our installed air conditioning and heat pump evaporator (indoor) coils began suddenly leaking refrigerant in 2008. These were not old coils either, and some had only been installed for a year when the issues arose. 


Read More
improved water intelligence

James Dipping: Water intelligence: Are you warmer or colder in finding a solution?

Failure to properly monitor and maintain a water system can have a direct impact on a company’s bottom line.
James dipping
James Dipping
May 11, 2022
No Comments

In my January 2022 column, I made a broad call for improved water intelligence to offer improved building occupant health. This is nothing new to the HVAC industry, with system monitoring and control extending far beyond the mechanical room and into the most remote areas of the building


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hospitals and other health care facilities

Christoph Lohr: Water in health care facilities

The public health and economic nexus.
Christoph Lohr
May 9, 2022
No Comments

You would expect water in a hospital to be safe. But, far too often, water in hospitals and other health care facilities can put patients at risk of severe illness or death.


Read More
Lead test

Ethan Grossman: Get a clue about lead

It took 2,000 years to finally pass laws prohibiting the use of lead in plumbing.
Ethan Grossman P.E., CPD
May 4, 2022
No Comments
Maintaining constant circulation in heated floor slabs is key

John Siegenthaler: Maintaining constant circulation in heated floor slabs is key

Keep it flowing
Siegenthaler
John Siegenthaler P.E.
May 3, 2022
No Comments

Heated floor slabs, without floor coverings, have one of the lowest supply water temperature requirements of any radiant panel system. This makes them well-suited for use with renewable energy heat sources such as air-to-water heat pumps, water-to-water geothermal heat pumps, biomass boilers and solar thermal collectors.


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Decarbonization and electrification

Julius Ballanco: Decarbonization and electrification — are we there yet?

Electrification will not result in decarbonization when using fossil fuels to generate electricity.
Ballancojuliusvwhite 200
Julius Ballanco P.E., CPD
May 2, 2022
One Comment
touchless fixtures

Nicole Krawcke: Hands-free is key

COVID is not going away, unfortunately
Nicole krawcke
Nicole Krawcke
April 12, 2022
No Comments

It’s been two full years since the COVID-19 pandemic changed all of our lives. Two years is a long time to live life in a bubble. I know many people will understand when I say I’m so tired of COVID and all of its restrictions! We want to get on with our lives and have everything return to normal. But here’s the thing, COVID is not going away just because we wish it would.


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Piping versatility

Piping versatility

How PVDF systems provide both plenum and purity.
Palovcak headshot
Averie Palovcak
Seiler headshot
David A. Seiler
April 11, 2022
No Comments

Innovation often starts within research facilities, which is certainly the case for a large university in the mountain region of the USA. When this facility needed to install a new piping system to support research and development efforts at its food and water laboratory, they looked to a local distribution company for expertise. Shyne & Associates, based out of Colorado, has serviced the plumbing industry for over 60 years by providing products that meet the needs of engineers and design firms across their region.  


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Installing a trouble-free condensing boiler
BOILER ROOM

Ray Wohlfarth: Installing a trouble-free condensing boiler

A high-efficiency boiler replacement requires additional planning.
Raynew 200
Ray Wohlfarth
April 8, 2022
No Comments

On the older hydronic systems, replacing the existing boiler with a new one was pretty straightforward. The installer connected the new boiler to the existing flue, piping and electric. The newer high-efficiency boilers are much different and require some additional planning.


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