20 Sep '12, 3pm

Target: HVAC - Hvac, Building Science, Energy-Efficient Design, Heating - EcoHome Magazine

While some promising new building technologies were discussed at the DOE’s recent Building America Technical Update meeting in Denver, one theme repeated with almost militant frustration was that U.S. heating and air conditioning manufacturers are not supplying equipment sizes commensurate with high-performance housing requirements. James Cummings, of the Florida Solar Energy Center, points out that not only are most air conditioning systems sized for peak demand, resulting in significant oversizing for 90% of operation time, but that this has been exacerbated with high-performance enclosures that typically require smaller equipment than manufacturers offer. “Try to get a 1-ton or smaller air conditioning unit, and you can’t,” says Cummings. Cooling systems also are set to respond to sensible or air temperature controls, when the main burden for most, especially high-perfo...

Full article: http://www.ecohomemagazine.com/hvac/target-hvac.aspx?BP_0...

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