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Home » Topics » Market Sectors » Solar Thermal/Geothermal

Solar Thermal/Geothermal
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The latest news, trends and equipment for solar hot water and geothermal heating/cooling systems.

ARTICLES

Fuzzy phrases
RENEWABLE HEATING DESIGN

John Siegenthaler: Important differences between head and Delta-P

Fuzzy phrases
Siegenthaler
John Siegenthaler P.E.
April 5, 2022
One Comment

This month I want to deviate a bit from a purely renewable energy topic to one that’s important across the entire spectrum of hydronics technology. It’s a topic that likely gets exercised on a daily basis in any engineering office where water-based HVAC systems are conceived.


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Whisper Valley, a master-planned community in Austin, Texas

Geothermal heat pumps: The solution for residential developments

Geothermal offers increased comfort and sustainability for environmentally conscious homeowners.
Tim Wright
March 17, 2022
No Comments

What does a looming housing shortage, a significant increase in energy prices and 52% of home buyers ready to heat and cool their homes with electricity have in common? They’re all remedied in the same way: All-geothermal residential developments.


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Hydronics technology offers versatile solutions
RENEWABLE HEATING DESIGN

John Siegenthaler: Peaking ahead

Hydronics technology offers versatile solutions for heating and cooling systems
Siegenthaler
John Siegenthaler P.E.
February 4, 2022
No Comments

As interest and incentives build to transition space heating and domestic water heating systems away from fossil fuels and toward electricity, a somewhat predictable but only marginally quantified problem is developing. Two words describe it: Peak demand.


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energy ratings

John Siegenthaler: What you don't pay for

Understanding the alphabet soup of energy ratings.
Siegenthaler
John Siegenthaler P.E.
January 4, 2022
No Comments

Heat pumps move heat from low-temperature sources to higher temperature loads. There are many types of heat pumps, but they all perform this basic thermodynamic mission.


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plumbing engineering

Ethan Grossman: Between a rock and a hard place

The interface between site utilities and plumbing engineering should always be given special attention.
Ethan Grossman P.E., CPD
December 7, 2021
No Comments

Getting stuck “between a rock and a hard place” is something that happens to most all of us as we navigate through life. It’s that sinking feeling you get in your gut when you must make a tough decision. 


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 Radiators for renewables

John Siegenthaler: Radiators for renewables

How to size panel radiators for low water temperatures.
Siegenthaler
John Siegenthaler P.E.
December 6, 2021
No Comments

Modern panel radiators are one of my favorite hydronic heat emitters. They’re easy to install, emit radiant and convective heat, and have high-quality powder coat finishes. 


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heat metering growth opportunities

John Siegenthaler: Paying for heat

Heat metering presents a growing opportunity for hydronics professionals.
Siegenthaler
John Siegenthaler P.E.
November 3, 2021
One Comment

Apartment buildings and condominiums are home to families with different comfort preferences or attitudes on energy use. Similarly, many commercial buildings are divided into spaces where tenants have different temperature requirements or usage schedules.


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Pellet boiler meets modern hydronics

John Siegenthaler: Part 2: Pellet boiler meets modern hydronics

Part two of the modern hydronics series.
Siegenthaler
John Siegenthaler P.E.
October 4, 2021
No Comments

Last month, we looked at a piping approach for adding a pellet boiler and panel radiators to an existing two-zone baseboard system. The system’s original oil-fired boiler was being retained as an auxiliary heat source. 


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Windhager heating system

Pellet boiler meets modern hydronics

Part one of a new series on modern hydronics.
Siegenthaler
John Siegenthaler P.E.
September 6, 2021
No Comments

Over the last several years, I’ve been reviewing submittals for proposed heating systems using pellet-fired boilers. The submittals come from heating professionals ranging from contractors to professional engineers. They’re required for a state incentive program that offers significant rebates to encourage growth of the biomass heating market.


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spinner

Cold on the right; hot on the left

Keeping things simple as we design the buildings of the future.
Ethan Grossman P.E., CPD
August 4, 2021
No Comments
“Cold on the right; hot on the left” is a jab that is not particularly endearing to plumbing engineers. If it were ever uttered, it’s usually in the context that the task at hand is very easy.
Read More
More Articles Tagged with 'Solar Thermal/Geothermal'
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