Design Professional's Guide to Zero Net Energy Buildings by Charles Eley

Author:Charles Eley [Eley, Charles]
Language: eng
Format: epub
Tags: Architecture, Buildings, Residential, General, Adaptive Reuse & Renovation, Sustainability & Green Design
ISBN: 9781610917636
Google: RYsxDQAAQBAJ
Publisher: Island Press
Published: 2016-11-15T23:41:13.191520+00:00

MEASUREMENT AND VERIFICATION OF ZNE

The test for a ZNE building is at the utility meter, but the meter is a fairly crude measuring device. It does not break down electricity use by lighting, fans, heating, cooling, plug loads, etc., and this kind of detail is needed in order to properly manage a ZNE building. Collecting and evaluating this detailed data is a critical measurement and verification (M&V) function that can be performed by the BMS. When electricity use is higher than expected, looking at the end-uses will often identify the culprit. Perhaps a fan’s energy use is high because a filter needs changing and the fan is operating against greater pressure. Maybe time clocks for outdoor lighting are out of calibration. Many things could contribute to the problem, but without detailed information, figuring it out is mostly guesswork.

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