Log in
Forum » NC-2009 EAc1
Topic

Modeling radiant heating/cooling systems

NC-2009 EAc1: Optimize Energy Performance
posted by Petra Hajná on Sep 18, 2012, 5:11 am

Marcus Sheffer LEED Fellow 7group / Energy Opportunities LEEDuser Expert 5903 thumbs up September 18, 2012- 11:16 am How you model something that can't be modeled directly in the software you are using is very software specific. You will need to find a published work around, develop one yourself and explain how it works to the reviewer, or use different software that can model the system. Developing your own work around requires that you understand the software calculations at the code level. So contact the software manufacturer or try posting your question in one of the software forums...

Last reply: Francesco Passerini, Sep 19, 2012, 4:22 am

District Heating and Cooling Distribution Problems

NC-2009 EAc1: Optimize Energy Performance
posted by Dawn Kowalik on Sep 14, 2012, 9:34 am

The project is such that it consists of two major renovations of two college buildings and the construction of a new link between them. The energy model is just of ONE building. However, the...

Last reply: Marcus Sheffer, Sep 18, 2012, 5:15 pm

EAc1: equivalence energy calculation for french project???

NC-2009 EAc1: Optimize Energy Performance
posted by Nicolas MOLLE on Sep 17, 2012, 9:39 am

Hello,

I'd like to know if anyone can appreciate the levl of results for a french project under ASHRAE ? Having never done the calculation energy of difficle to approach the level...

Last reply: Marcus Sheffer, Sep 17, 2012, 10:34 am

Contradiction: Energy Modeling Area and certification fee area

NC-2009 EAc1: Optimize Energy Performance
posted by Diaa Madkour on Aug 9, 2012, 3:31 am

Hi all, we have a contradiction here between...

Last reply: Marcus Sheffer, Sep 7, 2012, 9:50 am

Proposed model, CAV system without cooling system

NC-2009 EAc1: Optimize Energy Performance
posted by Francesco Passerini on Sep 5, 2012, 4:52 am

In the proposed building that I’m modeling there is a CAV system without cooling system (in the...

Last reply: Marcus Sheffer, Sep 5, 2012, 12:19 pm

System type for process heat exchanger

NC-2009 EAc1: Optimize Energy Performance
posted by David Weigel, PE on Aug 27, 2012, 2:50 pm

Hi Group,

I searched posts and couldn't find anything like this that has already been answered.

I have a proposed 2000+ ton chilled water system in a building, which will be modeled...

Last reply: David Weigel, PE, Aug 27, 2012, 3:44 pm

Modeling a Natural Ventilation Building

NC-2009 EAc1: Optimize Energy Performance
posted by Carolina Vergnano on Aug 13, 2012, 10:35 am

Hi,

I'm working in a project that has 4 conditioned office rooms, which are enclosed by walls, and a café (adjacent to the office) that is natural ventilated.
The café is open to...

Last reply: Marcus Sheffer, Aug 23, 2012, 2:46 pm

Air recirculation and outdoor air

NC-2009 EAc1: Optimize Energy Performance
posted by Francesco Passerini on Aug 17, 2012, 8:02 am

I have some doubts concerning air loops of the baseline model, system 5 (Packaged...

Last reply: Marcus Sheffer, Aug 17, 2012, 2:42 pm

Table G3.1 Design Model Requirement

NC-2009 EAc1: Optimize Energy Performance
posted by Omer Moltay on Aug 15, 2012, 4:48 pm

Hi,

We are modeling an office building in Moscow. There are large underground parking levels that are heated. Now Appendix G says that if any space is heated or cooled in real life, than...

Last reply: Marcus Sheffer, Aug 15, 2012, 5:23 pm

Efficiency curve

NC-2009 EAc1: Optimize Energy Performance
posted by Francesco Passerini on Aug 10, 2012, 10:16 am

The efficiency of the boiler that I’m modeling has to respect Table 6.8.1F of ASHRAE 90.1:2007. More precisely, the thermal efficiency Et shall be equal to 80% according to the test procedure 10...

Last reply: Marcus Sheffer, Aug 13, 2012, 10:50 am