Peter Rumsey and other engineers debate the conditions of commissioning green buildings today

Peter Rumsey and other engineers debate the conditions of commissioning green buildings today

In generic mid-sized office buildings, controls commonly function off intent. Green and innovative low-energy buildings fare even worse: Canned controls solutions don’t mesh well with nonstandard techniques. Poor performance with a radiant heating system might be a controls issue, but it can leave project participants reluctant to try new approaches. It’s hard to pinpoint the source of this breakdown, but in my experience software implementation problems are usually key. System performance varies with the quality of the installer and programmer and bad code compounds poor implementation. Control loops that don’t work correctly cause valves, dampers, fans, and pumps to cycle uncontrollably for years at a time. Faulty sensors are another factor. The controls contractors I work with are often installers with electrical or programming backgrounds, not well versed in HVAC syste...

Full article: http://greensource.construction.com/opinion/2011/1109_Out...

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