|
Lately I've been giving the Green and LEED building movement some deep thought. What exactly makes a building's HVAC Green or LEED approved and what distinguishes it from heating/cooling systems that are not LEED approved?
Natural ventilation comes to mind, so do glass curtain walls, as well as solar-powered and/or geo-thermal heating/cooling. But fact is, many over-ventilated buildings simply leak too much energy.
As one commercial architect recently put it, "many Green Buildings don't save energy. They are fraught with thermal bridges and rely on gimmicks and fads rather than physics." This same architect points out that many of his colleagues the world over are more concerned themselves with scoring LEED points than simply meeting basic code requirements.
Huh?
Listen, the whole point of the Green movement is to save on energy in an energy challenged world. So then, what constitutes Green HVAC? A system that saves energy and meets every code requirement and standard to the letter of the law, regardless of meeting LEED requirements.
Should architects and engineers take a step back to rethink their Green design methods? Should we be less focused on thinking about earning points and instead concentrate on the "basic requirements" for making safe, effective, cost-saving and healthy HVAC first? Taken a step further, how many engineers and architects are willing to admit that certain so-called Green designs aren't really Green at all, but simply happen to qualify for a LEED point here and there?
The preceding article is a "sneak peek" from HVAC, a newsletter from GlobalSpec. To stay up-to-date and informed on industry trends, products, and technologies, subscribe to HVAC today.
|
"Almost" Good Answers: