Author Archives: Paul Greenwalt

Water Reclamation: Solutions for Today and Tomorrow

by Paul Greenwalt, EIT This article is part of Wood Harbinger’s newsletter series. I have a problem with knowledge. Once I know about something, I am unable to ignore it, look the other way, or even pretend to be uninterested. You might say it’s my own version of the Baader‑Meinhoff phenomenon. Fresh water is a […]

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Decommissioning Fire Dampers

by Paul Greenwalt, EIT and Mike Lehner, P.E. This article is part of Wood Harbinger’s newsletter series. We have all heard of commissioning, but what is decommissioning? Oddly enough, it does not require the services of a Certified Commissioning Professional (CCP) or other similar licensed commissioning provider. In the case we’ll discuss here, it also […]

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Electricity vs. Natural Gas: The Energy Showdown

by Paul Greenwalt, EIT This article is part of Wood Harbinger’s newsletter series. Residential, commercial, and industrial users have choices about the energy sources they use for building systems and processes, such as HVAC and water systems, refrigeration systems, manufacturing/production processes, cooking, and clothes drying. Natural gas and electricity are the two main options for […]

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The Next Frontier: Energy Storage

by Paul Greenwalt, EIT This article is part of Wood Harbinger’s newsletter series. We have made great strides toward reducing energy consumption and increasing energy efficiency in building equipment and systems. Revisions to energy codes and building standards, metrics like LEED, and the economic incentive of energy costs savings have helped forge this path. At […]

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Airplane (Air Pain?) Travel

by Paul Greenwalt, EIT Recently, my wife and I decided to finally visit a college friend of mine in her hometown of Sitka, Alaska. We made our way to the airport, breezed through security, and headed to our departure gate.

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The Process of Energy Modeling – Part III

By Paul Greenwalt Wood Harbinger’s engineers have been blogging since 2013! This Throwback Thursday series features posts from back in the day that are just too good to stay at the back of the blog. Enjoy this one by Paul Greenwalt, originally published on January 21, 2014: In the previous parts of this series, I […]

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The Process of Energy Modeling – Part II

By Paul Greenwalt Wood Harbinger’s engineers have been blogging since 2013! This Throwback Thursday series features posts from back in the day that are just too good to stay at the back of the blog. Enjoy this one by Paul Greenwalt, originally published on January 9, 2014: In Part I of this series, we focused […]

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The Process of Energy Modeling – Part I

By Paul Greenwalt, EIT Wood Harbinger’s engineers have been blogging since 2013! This Throwback Thursday series features posts from back in the day that are just too good to stay at the back of the blog. Enjoy this one by Paul Greenwalt, originally published on November 14, 2013: There seems to be a misconception about […]

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Heat Pumps: The Undiscovered Energy Saver

By Paul Greenwalt, EIT Wood Harbinger’s engineers have been blogging since 2013! This Throwback Thursday series features posts from back in the day that are just too good to stay at the back of the blog. Enjoy this post from Paul Greenwalt, originally published on October 3, 2013: Traditionally, we have used Natural Gas or […]

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