Hi,
I have 2 questions in relation to the 90.1 Energy Model.
1) Is Dublin (Ireland) in ASHRAE climate zone 5 or 5a.
2) The building to be modeled is a 5 storey building with a basement. The basement is unconditioned but has some artificial lighting. Does the basement need to be included in the PRM model. Do I need to add up the total wattage for all the basement lights and include this in the model. The basement also has a few toilets / showers but this is a small percentage of the overall area.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5931 thumbs up
January 13, 2016 - 10:53 am
1. All climate zones are either a, b, or c. See Appendix B2.
2. You should model the basement. The interior lighting must be modeled and you need to assign it to a space. You also need to accurately model the thermodynamics and there is a difference between a basement and a slab. Hard to believe that the basement shower area is unconditioned. If even a small portion of the basement is conditioned it counts as a floor (story).
Ciaran McCabe
DirectorPassive Dynamics Sustainability Consultants
12 thumbs up
January 13, 2016 - 1:30 pm
Thanks Marcus. Table B3 "International Climate Zones" has Dublin down as Climate zone 5. Do I need to further refine this in terms of A, B, C based on local climate i.e. cool humid, dry, marine. ?
Your advise would be gratefully received.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5931 thumbs up
January 13, 2016 - 3:00 pm
You only need to do so for certain items like the economizer high limit cut off for example. So for a climate zone 5, yes you have to determine which one you are.
Ciaran McCabe
DirectorPassive Dynamics Sustainability Consultants
12 thumbs up
January 22, 2016 - 10:48 am
Is there any guidance on how infiltration / leakage through the fabric should be set in both the baseline & proposed models. We are upgrading the fabric in our building and therefore we aim to achieve better air tightness.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5931 thumbs up
January 22, 2016 - 11:17 am
I assume the fabric you refer to is the building wrap material. Unfortunately a baseline has not been established for air tightness so there is not a mechanism in place to claim savings.
Ciaran McCabe
DirectorPassive Dynamics Sustainability Consultants
12 thumbs up
January 22, 2016 - 11:38 am
Thanks Marcus.