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Preheat coil requirement in baseline

NC-v4.1 EAp2: Minimum Energy Performance
posted by Samer Hassanie on Jan 31, 2024, 12:11 pm

Hi,

It is not clear from G3.1.3.19 where the preheat coil should be placed.

Is it upstream or downstream the economizer and the heat exchanger?

Last reply: Luis Andrade, Feb 12, 2024, 6:30 am

Baseline Building DCV

NC-v4.1 EAp2: Minimum Energy Performance
posted by Luis Andrade on Feb 2, 2024, 10:36 am

Hi everyone,

I'm currently performing a PRM assessment of an Office building. ASHRAE 90.1 - 2016 has condensed in its appendix G all prescriptive information to model the Baseline building...

Using BPFs from ASHRAE 90.1-2022 instead of 90.1-2016

NC-v4.1 EAp2: Minimum Energy Performance
posted by Mark Benson on Jan 29, 2024, 5:07 pm

In the November 2023 issue of ASHRAE Journal, members of the 90.1 committee stated that 60% of the BPFs in ASHRAE 90.1-2022 have become less stringent than those in 2019 and some are even less...

Last reply: Mark Benson, Jan 30, 2024, 8:41 am

Desiccant Wheel Modeling for Baseline case

NC-v4.1 EAp2: Minimum Energy Performance
posted by John on Jan 2, 2024, 8:19 am

I am working on a model which has Desiccant wheel in design case. Do we need to model desiccant wheel in baseline case as well? I dont see any section related to this in ASHRAE 90.1, however, in...

Last reply: John, Jan 10, 2024, 6:12 am

Baseline HVAC, Non-regulated loads and Exceptional Calculation Method for V4.1

NC-v4.1 EAp2: Minimum Energy Performance
posted by on Dec 6, 2023, 9:54 pm

A 156,000 SF pharmaceutical production facility wants to pursue LEED v4.1.  Building breakdown as follows:

  • 75,000sf of pharmaceutical manufacturing space with 30-40...

EAP2- air tightness test

NC-v4.1 EAp2: Minimum Energy Performance
posted by Hafsa BOUCHFER on Oct 5, 2023, 10:10 am

Marcus Sheffer LEED Fellow 7group / Energy Opportunities LEEDuser Expert 5796 thumbs up October 8, 2023- 11:09 am It appears that this question should be asked in the forum relative to the enhanced commissioning credit. Log in or register to post comments Hafsa BOUCHFER LEEDuser Basic Member October 9, 2023- 3:52 am thank you for your clarification, I have just published my question in the enhanced commissioning credit forum. Log in or register to post comments ...

Last reply: Hafsa BOUCHFER, Oct 9, 2023, 3:52 am

PV and Battery

NC-v4.1 EAp2: Minimum Energy Performance
posted by Kristin Hernandez on Oct 4, 2023, 5:28 pm

I am working on a new construction project in California that required PV and battery per Title 24. Does this need to be accounted for in the energy model? Does anyone have experience...

Last reply: Jamy Bacchus, Oct 8, 2023, 1:00 pm

LEED baseline model with proposed increased ventilation and pressurization

NC-v4.1 EAp2: Minimum Energy Performance
posted by Moses Chong on Sep 13, 2023, 6:03 pm

Has any one worked on LEED project that includes increased ventilation credit AND the project has an pressurization-based ventilation rate? What should I do with the baseline model? should I a)...

Last reply: Tyler Thumma, Sep 29, 2023, 9:38 am

Natural Ventilation Modelling and Credit for savings

NC-v4.1 EAp2: Minimum Energy Performance
posted by Luis Andrade on Apr 11, 2023, 1:31 pm

Hi all,

I've been searching around the LEED V2009, V4 and V4.1 EAp2 / c2 versions trying to find an answer to this problem, but I've encountered little information on how to model natural...

Last reply: Tyler Thumma, Sep 29, 2023, 8:39 am

Justification of usign the 9.6.2 Additional Power lighting in the Baseline Model

NC-v4.1 EAp2: Minimum Energy Performance
posted by Marc Maso on Jun 19, 2023, 12:22 pm

some post in this forum where the additional power has been defined as process load. For example:  https://leeduser.buildinggreen.com/forum/additional-interior-lighting-power-1 We use this assumption...

Last reply: Marcus Sheffer, Jun 22, 2023, 10:56 am