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Home » Topics » Radiant & Hydronics Columns

Radiant & Hydronics Columns
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The politics of snow-melt systems

“So how do you figure your return on investment?”
Dan Holohan
November 16, 2016

Radiant sidewalks have hidden benefits.


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When and how to use reverse return piping

In many hydronic systems, there’s a need to divide the overall system flow into equal streams that pass through several identical components.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
November 16, 2016

When — and when not — to use reverse return piping.


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How to eliminate ghost flow and recirculation issues

Don’t repeat design mistakes.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
August 31, 2016
How to eliminate ghost flow and recirculation issues.
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Upgrade your knowledge on snow- and ice-melt systems

Not your grandpa’s snow melt.
Eatherton
Mark Eatherton
August 30, 2016
The ASHRAE folks develop most of the standards used in determining the energy requirements of snow- and ice-melt systems.
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Can the boiler breathe?

The free area of an opening determines how much combustion air can be delivered to the boiler room.
Ray Wohlfarth
August 30, 2016
Make sure enough free area is available for safe and proper combustion.
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How to size a boiler-feed pump

You need to understand two important variables.
Dan Holohan
August 30, 2016

When it comes to boiler-feed pumps, the two important variables are the amount of water in the operating range of the boiler and the steam-to-condensate time lag across the system.


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Eye on district heating

Fracking had lowered the price of natural gas, and many Americans in the Northeast, where fuel oil has long been popular, were switching to gas.
Dan Holohan
July 25, 2016

Today’s systems use hydronics on a large scale.


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10 hydronic lessons learned

July 2016 marks my 20th anniversary of writing the Hydronics Workshop for Plumbing & Mechanical magazine.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
July 22, 2016
Embrace the learning curve.
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Outdoor reset is the 'smart' choice

Beyond smartphones, we now have smart watches, smart thermostats and smart windows.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
June 27, 2016

It’s not sexy, but outdoor reset is still a ‘smart’ choice.


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Don’t your clients deserve the best job rather than the fastest?

: It’s about time.
Dan Holohan
June 24, 2016
We’d go into old houses and apartment buildings and look at problem jobs, especially those of the steam variety.
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