Tag Archives: HVAC

Mechanical Systems that Deliver More with Less

by Shaun May, EIT, CEM and Paul Greenwalt, EIT. This article is part of Wood Harbinger’s newsletter series. Mechanical design is going through a shake-up as energy efficiency and multi-use, flexible spaces become higher priorities in many building types. The latest Washington State Energy Code (WSEC 2015) is also driving major change.

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Hunting Down a Solution to My Cold Bedroom Woes

by Jacob Odell It was a cold winter day when I noticed a heavy draft coming through the dog door and I got to thinking about how to stop it. But this is not the beginning of our story. The tale begins some years ago—never mind how long precisely—when my wife and I bought our […]

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Winter is Coming: Is Your Building Ready?

by Jeff Yirak, P.E., CPMP, LEED AP BD+C, O+M This article is part of Wood Harbinger’s newsletter series. When seasons change, so does the behavior of a building’s heating, ventilation, and air conditioning (HVAC) system. Heating in winter and cooling in summer results in very different HVAC equipment demands. The spring and the fall aren’t […]

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The Many Useful Benefits of Airflow Measurement

by Jeff Yirak, P.E. CPMP LEED AP BD+C, O+M Summer is a great time to take a vacation. I recently had the pleasure of visiting Jewel Cave National Monument in South Dakota. My first point of advice is to arrive early; we waited about two hours for the next available tour. Once inside, we had […]

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VRF System Considerations

By Nick Baker, EIT, LEED AP BD+C Variable Refrigerant Flow (VRF) HVAC systems have the potential to be very energy efficient and flexible in their application. With relatively few system components, the system works by moving refrigerant to the zone needing to be heated or cooled, allowing precise control of the temperature in that area.

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An Education Affirmation: It All Matters

By Paul Greenwalt, EIT Do you like math and science? Are you fascinated by mechanical and electrical gadgets? If so, I bet when you were young you liked taking things apart to see how they worked. Sometimes you even put those things back together. Sometimes you put those things back together and you didn’t have […]

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Heat Transfer in the Mind of a 7 Year Old

By Nick Baker, EIT, LEED AP BD+C I deal with heat transfer every day. Everyone does.  It is really a basic principle; if you place something cold on something hot, the cold thing gets warm.  That is heat transfer. It is that simple.  Working as a Mechanical Engineer specializing in Commissioning in the Heating, Ventilation […]

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Bridging Schools and Eras with HVAC

Paul Johnson, Wood Harbinger’s Vice President of Mechanical Engineering, wrote an article for Engineered Systems Magazine highlighting our mechanical engineering design for the renovation of Seattle’s iconic Chief Sealth International High School and new Denny Middle School. Here’s a short excerpt, but find the full article on ES Magazine’s website here (requires subscription) or view […]

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