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Heat pump and photovoltaics as District Energy System

NC-v4 EAc2: Optimize Energy Performance
posted by Giulia Guglielmo on May 20, 2019, 10:40 am

Building A is part of a complex of four buildings, but only the building A is subject of LEED certification. The building heating, cooling and service water heating system is served by a heat...

Last reply: Marcus Sheffer, Jun 12, 2019, 2:46 pm

Open Aircraft Hangar, No HVAC

NC-v4 EAc2: Optimize Energy Performance
posted by Adam Fitzpatrick on Jun 5, 2019, 10:58 am

We are designing an open aircraft hangar in southern Alabama that will not have any HVAC equipment.  How would we go about pursuing Optimize Energy Performance credits?

My initial thought...

Last reply: Adam Fitzpatrick, Jun 7, 2019, 12:05 pm

Software for Energy Modelling

NC-v4 EAc2: Optimize Energy Performance
posted by ANDREA VALENTINI on May 24, 2019, 7:25 am

Hello.

I'm working on a project in Italy and evaluating to buy a new BIM software.

Is there anyone who knows if it's possible to analyze our building with a proper BIM SW?

I...

Last reply: Marcus Sheffer, May 29, 2019, 9:48 am

Shared walls with another structure in baseline and proposed

NC-v4 EAc2: Optimize Energy Performance
posted by Christine McKinley on May 23, 2019, 1:45 pm

Hello, 

In my baseline model, can I show shared walls as exposed to exterior and then in my proposed model treat that wall as a partition? 

In other words, do I get to use the...

Last reply: Christine McKinley, May 23, 2019, 6:13 pm

Baseline systems exception: A system for the kitchen in all electricity heating source

NC-v4 EAc2: Optimize Energy Performance
posted by Mohamed Elagiry on May 20, 2019, 11:51 am

if we have system 6 as The main system which has the electricity as the main heating source, we have an exception for the kitchen according to G3.1.1 b which state to use system 5 or 7 for the...

Last reply: Marcus Sheffer, May 20, 2019, 5:14 pm

Energy Model AND LEED Excel sheet required

NC-v4 EAc2: Optimize Energy Performance
posted by Brandon White on May 10, 2019, 9:57 am

Are both required to be completed?  If so, one has to enter all the building information into compliant energy modeling software AND into the LEED Excel sheet?  That's ridiculous. 

Last reply: Sarah Gudeman, May 11, 2019, 12:47 am

Solar PPAs and Calculating Annual Energy Cost Reductions

NC-v4 EAc2: Optimize Energy Performance
posted by Joshua Radoff on Aug 12, 2015, 5:00 pm

works. There was a thread in one of the other LEED User forums recently on this subject. Log in or register to post comments Joshua Radoff Senior Vice President, LEEDuser Primary Author, WSP, Built Ecology...

Last reply: Marcus Sheffer, May 10, 2019, 3:05 pm

Shading by fixed construction elements- take into account for the baseline model?

NC-v4 EAc2: Optimize Energy Performance
posted by Sarah Leenknegt on Apr 16, 2019, 9:38 am

Hi

Summary from Appendix G:

- self-shading is not allowed to be modeled in the baseline

- manual shading devices are not required to be modeled in the baseline

-...

Last reply: Marcus Sheffer, Apr 16, 2019, 12:12 pm

Semiheated

NC-v4 EAc2: Optimize Energy Performance
posted by Sarah Leenknegt on Apr 15, 2019, 9:55 am

Hi

I have not yet found a clear description of the way of modelling a semiheated zone, so I will attempt to summarize. Please correct/append where needed.

- Exterior surfaces for...

Last reply: Marcus Sheffer, Apr 15, 2019, 2:38 pm

Savings from economizers for boilers for manufacturing proces

NC-v4 EAc2: Optimize Energy Performance
posted by Thomas Tan on Mar 14, 2019, 5:24 am

Dear All,

Our design team want to propose economizers for our current manufacturing system to save energy cost from boilers. Can we claim this savings for our...

Last reply: Marcus Sheffer, Mar 19, 2019, 12:49 pm