If your climate zone does not require air econmizer for baseline systems (90.1 2007, climate zone 4a) are you allowed to model your proposed systems with economizer, per design and not have economi

Hello:) In which programs are you doing energy simulations? Did you have some problems with GBCI concerning the type of the programe that you chose? What with IDA ICE for example. Thanks:)

Appendix G (Table 3.1) states that lighting power for building facades has to be modeled in the energy simulation.

Can you use center of glass for EAp2 & c1 or do you need factor for the entire unit?

I’m modeling a building for C&S in France. Normally in my baseline and proposed models I put the same infiltration (n50 = 0.14 ach) for both buildings.

Theoretically one might think modeling the glazing and shadowbox portions of a curtain wall with a single assembly u-value would yield the same result as modeling the curtain wall as glazing for th

I am just wondering what people's opinion is on Tranes trace software and eQuest software.

Has anyone been successful in claiming savings in tenant spaces for anything other then lighting power reductions? Demand controlled ventilation, daylight sensors or plug load reductions perhaps?

Dear Community, we have a situation where our proposed design utilizes a double roof (i.e. naturally ventilated attic) as part of the building's passive environmental design.