Forum quick links
ASHRAE 90.1 vs T-24 in california
NC-2009 EAp2:Minimum Energy Performanceposted by Lance Collins on
Question: I am working on a new LEED-NC project in california that is using a modular/prefab construction type with mechanical systems that do not require permits via the T-24 code.
Chilled Water Pumps, Primary/Secondary
NC-2009 EAp2:Minimum Energy Performanceposted by Aaron Dahlstrom on
ASHRAE 90.1-2007 Sec G3.1.3.10 requests that users specify pump power of 22 W/gpm, with a primary / secondary pumping system and variable flow on the secondary side.
Conditioned Space
NC-2009 EAp2:Minimum Energy Performanceposted by Jean Marais on
Consider a space, storage, with no heating, modelled with heating setpoint -50 degC, receives air from a central air handling unit VAV system, where the delivered air is pre-conditioned from Outdoo
Parallel PIU fan energy
NC-2009 EAp2:Minimum Energy Performanceposted by Magda Aghababyan on
My baseline is under system 6 in which the parallel PIU fans has to be introduced for each zones.
Separated Baselines for Residential and Non-residential Portions
NC-2009 EAp2:Minimum Energy Performanceposted by Wenguang Wang on
We have a hotel development project in China seeking for the LEED-NC v2009 certification. We are now facing a problem of setting the baseline case for the energy model.
ASHRAE 90.1 - Section 8 Voltage Drop
NC-2009 EAp2:Minimum Energy Performanceposted by Carolina Vergnano on
In the section 8.4 Feeder conductors shall be sized for a maximum voltage drop of 2% at design loadand branch circuit condutors shall be sized for a maximum voltage drop of 3% at design load. I'm
Baseline system selection
NC-2009 EAp2:Minimum Energy Performanceposted by Jane Long on
I'm modelling a European Industrial project where nearly a 5th of the floor area is a specialist process area, similar to a clean room or laboratory, however used for industrial processes, in use 2
Modeling HVAC for future un-designed office space
NC-2009 EAp2:Minimum Energy Performanceposted by Vernon Smith on
I am modeling a 50,000 sf college cafeteria that has a basement, a main floor and a mezzanine. A portion of the basement is part of the cafeteria.
Regional industrial practices
NC-2009 EAp2:Minimum Energy Performanceposted by Valentin Grimaud on
Dear community, I am facing a problem meeting the eap2 credit since my project presents almost 80% energy cost related to process.
Old HVAC equipment transferred from other site
NC-2009 EAp2:Minimum Energy Performanceposted by Yastimy Jupson on
Hello, I have a new factory project recently. The owner wants to transferred old HVAC equipment from their old factory to this new factory.