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NC-2009 EAp2:Minimum Energy Performance

Exterior lighting on building roof surface

I'm working on a project with sitting areas and outdoor swimming pool on a building flat roof surface and installed with exterior lighting. ASHRAE 90.1 (Table 9.4.5) only covers the exterior lighting power densities on building grounds and facades, but how about the roof lighting? What will you assume for the baseline LPD of the roof area and outdoor swimming pool?

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
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Mon, 09/03/2012 - 17:52

I would consider this part of the grounds and use the special features LPD of 0.2 W/ft2.

Mon, 02/25/2013 - 17:59

Hello Marcus and Diego, Speaking about VRF systems, which are not covered by ASHRAE 90.1 until 2010 edition, I am having troubles filling HVAC Compliance Form, Part II, Systems Worksheet, I have a building with a number of VRF systems, and outside aire intake by two dedicated fans, I think I know what a "system" is, but at this time, I am confused if I have to indicate the intake air fans, or each of the VRF systems, and if it is so, how do I divide outside equipment from inside equipment, In few words, how do I fill HVAC Compliance Form for a VRF system with general outside air intake. Thank you

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