John Siegenthaler: Drawn to Professionalism: Part 1 John Siegenthaler, P.E. May 24, 2018 Good system documentation adds value to projects.Read More
John Siegenthaler: Designing cordwood gasification boiler John Siegenthaler, P.E. April 26, 2018 A simplified design for cordwood gasification boiler systems.Read More
John Siegenthaler: How to wire fresh air dampers The 2018 version of NFPA 54 prescribes methods for providing this air into confined spaces using one or two openings to outside space. John Siegenthaler, P.E. March 27, 2018 A simple circuit to coordinate fresh air dampers.Read More
John Siegenthaler: Tell me more about 'nubbed' foam panels John Siegenthaler, P.E. February 26, 2018 Designers need more information on “nubbed” foam insulation panels.Read More
Siegenthaler: There's no such thing as 'head pressure' John Siegenthaler, P.E. January 30, 2018 Anyone who has worked on the technical side of the hydronics industry has used terminology such as: pressure, differential pressure, head and head loss. These terms all have legitimate and specific meanings.Read More
Back to hydronics basics John Siegenthaler, P.E. December 30, 2017 A knowledge of basic science reveals situations that seem too good to be true.Read More
Myths and methods for protecting boilers against flue gas condensation. John Siegenthaler, P.E. November 27, 2017 Stay above the dew point.Read More
You don't pay for COPs John Siegenthaler, P.E. October 24, 2017 It’s energy cost savings that really matter.Read More
Check valves don't always work as intended John Siegenthaler, P.E. September 25, 2017 What is the purpose of a check valve?Read More
Practice good sensor-ship Give your temperature controllers 20/20 vision. John Siegenthaler, P.E. August 29, 2017 Every hydronic system has one or more controllers that measure and respond to temperature.Read More
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