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Air Economizer laboratory

NC-v4 EAp2: Minimum Energy Performance
posted by Abdulrahman Alshbeeb on Sep 15, 2023, 3:08 am

We have a laboratory with very high indoor air requirements. Due to the high demands on the quality of the room air, no air may be circulated....

Calculating Baseline Fan Power and CFM?

NC-v4 EAp2: Minimum Energy Performance
posted by Rajat Wadhwa on Sep 15, 2023, 4:57 pm

How should I calculate the Fan CFm and power for Baseline LEED Model, Autosize the baseline system , then use Q=mCpDeltaT to calculate fan CFM and then find out the HP and use pressur adjustment...

Baseline system in ASHRAE 90.1 G3.1.1

NC-v4 EAp2: Minimum Energy Performance
posted by Eric Dyer on Sep 13, 2023, 4:30 am

Hello,

I have a question in the process of creating a baseline system in our modelling.
Our project is in System8.

System8 is described in ASHRAE 90.1 G3.1.1 as "each floor...

Last reply: Eric Dyer, Sep 13, 2023, 7:30 pm

District heating prices

NC-v4 EAp2: Minimum Energy Performance
posted by Azra Semic on Sep 13, 2023, 5:59 am

Hello,
Does anyone know if we are able to deduct from energy prices (gas) if district heating is using only 50% of gas for heating and rest comes form renewable sources?
Thanks!

Humidity controls in baseline model

NC-v4 EAp2: Minimum Energy Performance
posted by Nicolas Martinez Ochoa on Jul 15, 2021, 4:43 pm

Hello everyone,

I am currently working on the energy model of an apartments building in Miami. The building has rooftop units to provide OA (which provides 30% more than the 62.1...

Last reply: Harini Goteti, Sep 11, 2023, 12:01 pm

Modeling System 5 per floor

NC-v4 EAp2: Minimum Energy Performance
posted by Rajat Wadhwa on Aug 24, 2023, 1:43 pm

Hi I am modeling a building with baseline system as 5 now based on Table G 3.1.1 , it says we need to model 1...

Last reply: Marcus Sheffer, Aug 24, 2023, 4:14 pm

Schedule for Data Center Load

NC-v4 EAp2: Minimum Energy Performance
posted by Rajat Wadhwa on Aug 7, 2023, 3:14 pm

Hi I am modeling a Data Center what schedule should I use for IT loads, should I run it for 100% all the time?

Last reply: Marcus Sheffer, Aug 9, 2023, 4:37 pm

Renewable Energy Production

NC-v4 EAp2: Minimum Energy Performance
posted by Piotr Adamczyk on Aug 9, 2023, 2:32 am

Dear All,

I want to ask you how you approach taking into account the yield of the photovoltaic installation in the MEPC calculator.
I received the yield calculation from the designer...

Last reply: Marcus Sheffer, Aug 9, 2023, 4:27 pm

Baseline Model for Data center Economizer

NC-v4 EAp2: Minimum Energy Performance
posted by Rajat Wadhwa on Aug 8, 2023, 12:36 pm

Hi, 

I have encountered an issue with the baseline model for Data Center , based on LEED Comments we are using system 8 and for climate zone 5a the economizer shut off limit is 70F, the...

Last reply: Moses Chong, Aug 8, 2023, 12:55 pm

AHSRAE 90.1, G3 Modeling Question- External Louvers/Shades

NC-v4 EAp2: Minimum Energy Performance
posted by Brian Salazar on Aug 7, 2023, 11:47 am

Hello!  Our team is researching opportunities to reduce SHG loads on an 8-story new construction university residence hall.  The question has come up regarding the use of external-fixed louvers...

Last reply: Marcus Sheffer, Aug 7, 2023, 11:59 am