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Home » Topics » Radiant & Hydronics Columns » John Siegenthaler: Hydronics Workshop

John Siegenthaler: Hydronics Workshop
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Siggy

John Siegenthaler: 4-way versus 3-way motorized mixing valves

Which is the better choice, and why?
Siegenthaler
John Siegenthaler, P.E.
April 1, 2021
No Comments

Although the market for gas-fired boilers continues to track toward those that can modulate and operate with sustained flue gas condensation, conventional boilers (e.g., those not designed to operate with sustained flue gas condensation) still represent a significant portion of the market. 


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Siggy

John Siegenthaler: Unique circumstances

Multi-zone heating, single zone cooling.
Siegenthaler
John Siegenthaler, P.E.
February 26, 2021
No Comments

As global energy planning moves away from fossil fuels and toward electricity, an increasing number of hydronic heating systems are being supplied by heat pumps. 


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Siggy

John Siegenthaler: Cascading heat pumps

Electrically-powered heat pumps will continue to gain market share.
Siegenthaler
John Siegenthaler, P.E.
January 23, 2021
No Comments

Heat pumps are incredibly useful devices. 


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Siggy

John Siegenthaler: Chump change

The minuscule cost of operating a well-designed hydronic distribution system.
Siegenthaler
John Siegenthaler, P.E.
December 22, 2020
No Comments

Hydronic heating professionals often promote the concept that current generation mod/con boilers can operate with AFUEs in the range of 95% and above. 


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Siggy

John Siegenthaler: Combining heat pumps with buffer tanks

Consider a buffer tank between the heat source and distribution system.
Siegenthaler
John Siegenthaler, P.E.
November 25, 2020
No Comments

Whenever a hydronic system is divided into several zones, it’s worth considering a buffer tank between the heat source and distribution system. 


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Siggy

John Siegenthaler: Back to basics: Thoughtful zoning

Things to consider before planning your piping layout.
Siegenthaler
John Siegenthaler, P.E.
October 21, 2020
One Comment

A zone is any area of a building for which indoor air temperature is controlled by a single thermostat (or other type of temperature controller). 


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Siggy

John Siegenthaler: Due diligence

Detailing a “2-pipe” buffer tank.
Siegenthaler
John Siegenthaler, P.E.
September 22, 2020
One Comment

Most buffer tanks used in hydronic systems are piped in a “4-pipe” configuration.


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Siggy

John Siegenthaler: A persistent question

“But what do I do about cooling?”
Siegenthaler
John Siegenthaler, P.E.
August 24, 2020
No Comments

The versatility of modern hydronics technology allows designers to create systems that are “customized” to the needs — and constraints — of almost any building. 


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Siggy

John Siegenthaler: Don’t mix your piping designs.

A little of this, a little of that — leads to incorrect layouts.
Siegenthaler
John Siegenthaler, P.E.
July 21, 2020
No Comments

Some hydronic system designers cling to certain system piping configurations — even when existing projects using those configurations have produced problems.


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Siggy

John Siegenthaler: Dos and don’ts of hydronic system design

10 lessons learnt.
Siegenthaler
John Siegenthaler, P.E.
June 29, 2020
One Comment

Anyone who says they wouldn’t change a thing on the hydronic systems they’ve designed or installed over the last decade is either so oblivious to changes in technology that they don’t know any better, so egotistical they can’t accept that improvement of their work is possible, or so foolish they don’t care what they’re missing out on.


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