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CHP Modeling patch confusion

NC-v4 EAp2: Minimum Energy Performance
posted by Przemysław Rejczak on Jun 26, 2019, 11:48 am

Dear Everyone,

Many of our buildings are connected to...

Last reply: Tyler Thumma, Sep 12, 2019, 7:50 pm

Service Water Heating DHW flow rate in the v4 Minimum Energy Performance Calculator

NC-v4 EAp2: Minimum Energy Performance
posted by Kyle G. Pearson on Sep 12, 2019, 1:26 pm

We are working on a large hotel, and are concerned with the "Modeled...

Last reply: Kyle G. Pearson, Sep 12, 2019, 3:50 pm

axial fan cooling tower

NC-v4 EAp2: Minimum Energy Performance
posted by Francesco Passerini on Jan 23, 2018, 6:45 am

G3.1.3.11 states: “The heat rejection device shall be an axial fan cooling tower with two-speed fans, and shall meet the performance requirements of Table 6.8.1G.”

In Table 6.8.1G I see...

Last reply: Marcus Sheffer, Sep 5, 2019, 12:47 pm

Proposed Model U-Values

NC-v4 EAp2: Minimum Energy Performance
posted by Trey Randolph on Aug 23, 2019, 8:48 am

I have a college dormitory with 4" face brick, R7.5 ci, 6" metal stud on 16" centers, r19 closed cell spray foam and 5/8" gypsum. Per 90.1 Table A3.3 my u-value would be 0.06. This seems high and...

Last reply: Marcus Sheffer, Sep 3, 2019, 4:08 pm

Baseline system efficiency

NC-v4 EAp2: Minimum Energy Performance
posted by Greenlab on Jul 3, 2019, 2:17 pm

Hello everyone, 

I am modeling a baseline system No. 6 - Packaged...

Last reply: Marcus Sheffer, Sep 3, 2019, 2:27 pm

Multi Scene Control for Lighting

NC-v4 EAp2: Minimum Energy Performance
posted by Gabriela Crespo on Apr 18, 2016, 2:29 pm

Dear all,

We're working on a LEED v4 NC project in Mexico.
I am referring to Exceptions to 9.4.1.2b of standard ASHRAE 90.1-2010, where the automatic lighting shutoff control can be...

Last reply: Marcus Sheffer, Sep 3, 2019, 2:21 pm

Trane Trace Reports

NC-v4 EAp2: Minimum Energy Performance
posted by Ciaran McCabe on Aug 23, 2019, 6:31 pm

Hi, for those using trane trace 700 is it normally the LEED summary report that is uploaded to LEED online or should others reports from the software also get uploaded. ?

Last reply: Marcus Sheffer, Aug 26, 2019, 10:38 am

LEED for Healthcare

NC-v4 EAp2: Minimum Energy Performance
posted by Dave Hubka on Jul 31, 2018, 4:39 pm

Hello Marcus,

Why is there a sliding scale for Healthcare as opposed to New Construction?

For example a New Construction project achieves 1 LEED point for demonstrating a 6%...

Last reply: Dave Hubka, Aug 5, 2019, 5:10 pm

Baseline HVAC System for Floors with Conditioned Spaces with no Ventilation

NC-v4 EAp2: Minimum Energy Performance
posted by Pan Pan on Jul 28, 2019, 11:26 pm

Hi!
According to Appendix G if the system selected if Systems 5-10, each floor will be modelled with separate HVAC system. What if the floor contains spaces that are conditioned yet no...

Last reply: Waleed AlGhamdi, Jul 29, 2019, 10:39 am

Heated Only Residential Zones in 90.1 Appendix G

NC-v4 EAp2: Minimum Energy Performance
posted by Omer Moltay on Jul 22, 2019, 7:18 am

Hi,

This has been bogging us for a while, as we cannot figure out how to interpret the various issues in ASHRAE 90.1.

If in a multifamily building the residential units are only...

Last reply: Marcus Sheffer, Jul 22, 2019, 6:09 pm