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Home » Topics » Radiant & Hydronics

Radiant & Hydronics
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Viega Thermostats

Radiant controls and valves for easy installation

Viega introduces new products for hydronic and HVAC applications that allow for easy installation and system integration.
February 14, 2014

Viega introduces new products for hydronic and HVAC applications that allow for easy installation and system integration.


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Twelve new student teams to compete in Solar Decathlon 2015

February 13, 2014

U.S. Deputy Secretary of Energy Daniel Poneman announced the 20 collegiate teams selected to compete in the DOE’s Solar Decathlon 2015 at the Orange County Great Park in Irvine, Calif. The teams will now begin the nearly two-year process of building solar-powered houses that are affordable, innovative and energy-efficient.


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February 2014 Glitch drawing

The geothermal heat pump is just like a boiler

The Glitch and The Fix, February 2014
John Siegenthaler, P.E.
John Siegenthaler, P.E.
February 13, 2014

A homeowner asks his local heating installer if a geothermal heat pump can be combined with radiant floor heating. The system he creates is meant to supply a dozen independently controlled zones of low-temperature floor heating.


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A.O. Smith

How does a heat pump water heater work?

Water heaters are the second-highest energy source in the home.
February 3, 2014

Water heaters are the second-highest energy source in the home.


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Beautiful Heat (Canada) logo

Beautiful Heat sets baselines for residential radiant heat efficiency in Canada

January 31, 2014

Based on the results from energy simulations of different home types in six regions of Canada, annual energy savings of up to 18% could be realized with radiant heat.


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January 2014 Glitch drawing

Using wood-gasification boiler for space heating and repurposed thermal storage tank

January 2014 The Glitch and The Fix
John Siegenthaler, P.E.
John Siegenthaler, P.E.
January 30, 2014

A homeowner wants to use a wood-gasification boiler as his primary source of space heating. He also wants a propane-fueled boiler to automatically come on for backup should he decide not to tend the fire, or if he is away. The owner has read that a generously sized thermal storage tank is necessary to allow a gasification boiler to operate at consistent high efficiency.


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December 2013 Glitch drawing

Trimming a hydronic heating system with panel radiators

December 2013 The Glitch & The Fix
John Siegenthaler, P.E.
John Siegenthaler, P.E.
December 30, 2013

A hydronic system is to supply four panel radiators, each with its own thermostatic radiator valve, and an indirect water heater from a gas-fired sectional cast-iron boiler. The system is designed using primary/secondary piping.


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November 2013 Glitch drawing

Controlling boilers in a hydronic system

John Siegenthaler, P.E.
John Siegenthaler, P.E.
November 26, 2013

The hydronic system shown above was created to connect three gas-fired, cast-iron boilers to a low-temperature distribution system that supplies 12,000 ft. of 3/4 in. PEX tubing embedded in the floor slab.The installer spends several frustrating hours attempting to get the air out of the system. He finally gets it purged to the point that the distribution circulator is at least moving some water through the floor-heating circuits.


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October 2013 Glitch drawing

Solar water-heating system pieced together

John Siegenthaler, P.E.
John Siegenthaler, P.E.
October 30, 2013

Joe Wrenchturner gets a call to install solar water heating for a longtime customer. He buys some flat-plate collectors through an online source and decides to assemble the remainder of the system using hardware he installs for other hydronic systems.


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ree hot water feat

Free Hot Water wins solar thermal innovation award

A panel of solar industry judges chose Free Hot Water for its innovative and cost-effective design of a solar hydronic heating, hot water and photovoltaic system that was shown to be cost-competitive with a natural gas system.
October 17, 2013

A panel of solar industry judges chose Free Hot Water for its innovative and cost-effective design of a solar hydronic heating, hot water and photovoltaic system that was shown to be cost-competitive with a natural gas system.


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    • PMC COLUMNS
      • Dave Yates: Contractor’s Corner
      • John Siegenthaler: Hydronics Workshop
      • Kenny Chapman: The Blue Collar Coach
      • Matt Michel: Service Plumbing Pros
      • Scott Secor: Heating Perceptions
  • ENGINEERS
    • CONTINUING EDUCATION
    • DECARBONIZATION | ELECTRIFICATION
    • FIRE PROTECTION
    • GEOTHERMAL | SOLAR THERMAL
    • PIPING | PLUMBING | PVF
    • PME COLUMNS
      • Christoph Lohr: Strategic Plumbing Insights
      • David Dexter: Plumbing Talking Points
      • James Dipping: Engineer Viewpoints
      • John Seigenthaler: Renewable Heating Design
      • Lowell Manalo: Plumbing Essentials
      • Misty Guard: Guard on Compliance
  • RADIANT & HYDRONICS
    • RADIANT COMFORT REPORT
    • THE GLITCH & THE FIX
  • INSIGHTS
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