In April, Tom Durkin hosted an extremely popular ES webinar tackling humidity in schools. We ran out of time and had a slew of leftover questions, so here, his engineering team joins him in addressing them. Caveat: The questions often solicit professional opinions based on experience, but that candid exchange is part of the beauty of the webinar, right?

The Modern Unit Ventilator

March 1, 2008

By Tom Durkin and Brian Partington P.Eng.

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In which the authors take out the original unit designed specifically for K-12 and see how things have changed in the decades since it first went to school. Time and technology have solved some problems, yet an old-fashioned issue like ease of maintenance can still pose headaches (or backaches). All in all, this update about a well-known design option deserves a permanent spot in your three-ring reference binder.

Continuing a Creative Legacy

December 1, 2007

By Tom Durkin, Steve Johnson, and BNP Media Staff

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FIGURE 1. Sump water schematic. Sump pump operation is intermittent, based on ground water level, but the surge tank allows the transfer pump to run continuously. The heat exchanger allows

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Q&A: Dehumidification In Schools