19 Feb '12, 7am

A Simple Building Energy Index #green

Here goes a late night post, but this has been bothering me. One of the big issues with PassivHaus seems to be the way energy usage is measured. 1. The building measurement side is strange since interior partition walls don't count as floorspace and basement floorspace is multiplied by 0.8 (if I understand everything correctly). 2. The somewhat arbitrary space heating energy usage limitation designed around German conditions, which have apparently been modified by the Swedes and Austrians to match their more severe climates, becomes a problem in other areas. Perhaps a simpler, climate adjusted measurement would work better such as: Building Annual Energy Index = (Energy Used) / (Degree Days) / (Building Conditioned Volume) x 1000 Energy Used is the energy required to maintain the conditioned volume within the set temperature range for the entire year. Set Temperature Range...

Full article: http://www.greenbuildingadvisor.com/community/forum/energ...

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