John Siegenthaler: Hydronics Workshop

John Siegenthaler gives a technical view of hydronic and radiant heating systems.

ARTICLES

Hydronic cooling for smaller buildings

Not just for skyscrapers.
By John Siegenthaler, P.E.
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Hydronic cooling also works in smaller buildings.


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Modern approaches to wood-fired hydronic heating

Don’t overlook the trees.
By John Siegenthaler, P.E.
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Just as the solar thermal industry had its ups and downs over the last four decades, the American public’s interest in wood-based heating has fluctuated with the price of conventional fuel.


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Radiant ceilings are a great option in many systems

Over your head.
By John Siegenthaler, P.E.
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Radiant floor heating is by far the biggest part of the radiant panel market.


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Our industry needs more focus on distribution systems

It’s not all about the boiler.
By John Siegenthaler, P.E.
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As an industry, we have to move beyond judging the quality of a hydronic system based solely on the heat source.


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How flow rate affects heat output

When “thinking mathematically,” most people think in proportions.
By John Siegenthaler, P.E.
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German water.


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Hydronic radiant ceiling cooling for smaller buildings.

Removing limitations on radiant heating systems.
By John Siegenthaler, P.E.
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Well-designed and properly installed hydronic radiant heating systems have earned a deserved reputation for superior comfort. Even so, many people hesitate on using these systems because they can’t just push a button on their thermostat to change the system from heating to cooling.


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Expansion tank pressurization

Improper air-side pressurization 'wastes' some of the internal volume.
By John Siegenthaler, P.E.
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All closed-loop hydronic systems require an air space to absorb the increased volume of water as it warms during system operation. In most hydronic systems, this task is handled by an expansion tank. In most modern hydronic systems, it’s handled by a diaphragm-type expansion tank.


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Talking to my computer

My first experience teaching an online course.
By John Siegenthaler, P.E.
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Last fall, I taught my first online course dealing with designing hydronic heating systems. The course was titled “Mastering Hydronic System Design.” It was a collaborative effort between HeatSpring Learning Institute, BNP Media’s CE Campus and myself.


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Combining outdoor reset control and heat pumps

Don’t overcook it.
By John Siegenthaler, P.E.
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In past columns, we’ve discussed geothermal water-to-water heat pumps and air-to-water heat pumps via hydronic heat sources. Both can be a great match to low-temperature hydronic distribution systems.


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Some ways to simplify hydronic systems

Less is best when it comes to hydronic heating systems.
By John Siegenthaler, P.E.
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After completing a hydronic installation, especially one that’s taken you a few days longer than expected, do you ever ponder that there is just too much “stuff” in some of these systems?


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