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Home » Topics » Plumbing & Mechanical Contractor » John Siegenthaler: Hydronics Workshop

John Siegenthaler: Hydronics Workshop
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The disproportionate world of hydronics

John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
June 16, 2017

The math associated with some of our assumptions can lead to incorrect conclusions.


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Continuous circulation in floor-heating circuits

John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
May 19, 2017

Keep water moving to prevent frozen pipes and other issues.


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The finer points of applying a 2-pipe buffer tank

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John Siegenthaler, P.E.
April 28, 2017

There are advantages to using this piping configuration in hydronic systems.


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How to properly size finned-tube baseboard heat emitters

Have a look at the rating tables for most finned-tube baseboard sold in North America and chances are you’ll see a footnote.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
March 29, 2017

Have a look at the rating tables for most finned-tube baseboard sold in North America and chances are you’ll see a footnote under the table that reads something like this: “Ratings are based on active fin length and include 15% heating effect factor.”


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Examining the effects of flow reversal in circulators

Unique design concepts sometimes require components to operate in non-standard conditions.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
February 17, 2017

There are hydronic design concepts in which flow must pass backward through a non-operating circulator, perhaps thousands of times over the life of the system.


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When is flow reversal practical?

Increasing heat output.
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John Siegenthaler, P.E.
January 18, 2017

Flow reversal is possible in a P/S system, but is it practical?


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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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Options for achieving hydraulic seperation between circulators

Keeping the peace.
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John Siegenthaler, P.E.
October 5, 2016

Twenty years ago, the contemporary approach to prevent interference between simultaneously operating circulators in a hydronic system was primary/secondary piping.


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Primary/secondary systems need proper detailing to work correctly

Double dipping in primary/secondary systems.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
September 28, 2016

A seemingly good idea that doesn’t work.


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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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