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Make Up Air Units Modeling Requirements (System or Process Load)- ASHRAE 90.1-2010

NC-v4 EAp2: Minimum Energy Performance
posted by Richard Tran on Dec 26, 2023, 9:05 pm

Hello,

I'm currently working on my first Energy Model for a dining hall/domitory on a college campus. Currently I'm having a dillema on if I need to model the Make Up Air Unit as a process...

Last reply: Tyler Thumma, Apr 5, 2024, 10:56 am

Water Heater Efficiency per Table 7.8 of ASHRAE 90.1-2010

NC-v4 EAp2: Minimum Energy Performance
posted by Richard Tran on Dec 26, 2023, 8:12 pm

Hello,

I'm currently working with two (600,000 Btuh, 130 Gallons, 97 EF) boilers for a dormitory building. From my interpretation of Table 7.8 the equation I'm suppose to use is 80%Et(Q/...

Last reply: Tyler Thumma, Apr 5, 2024, 10:49 am

Industrial or non-regular process load

NC-v4 EAp2: Minimum Energy Performance
posted by Charalampos Giannikopoulos on Nov 16, 2016, 8:52 am

For a facilities with increased process load (more than 60%), other than data centers, including but not limited to industrial facilities, is there a particular guidance in establishing a...

Last reply: Abdullah Tahir, Mar 29, 2024, 1:40 am

Predictive Climate Data

NC-v4 EAp2: Minimum Energy Performance
posted by Dave Hubka on Feb 15, 2024, 8:17 am

Hello, 

Wondering if anyone is using predictive (i.e., Future) climate data rather than past climate data when performing energy models. 

Thanks!

Last reply: Abdullah Tahir, Mar 27, 2024, 11:52 pm

Credit For Excess Chilled Water Rejected To Plant Site Chilled Water System

NC-v4 EAp2: Minimum Energy Performance
posted by Michael Hill on Feb 14, 2024, 4:53 pm

I am working on a project that is using heat pump chillers to generate hot and cold water for the building systems. When the building loads are cooling dominated, the excess heat is rejected to...

Last reply: Abdullah Tahir, Mar 26, 2024, 4:29 am

Modeling only conditioned area

NC-v4 EAp2: Minimum Energy Performance
posted by Omar Elrawy on Dec 9, 2020, 10:05 pm

I'm certifying a huge factory with an attached office building. Is it possible to model only the office area?
The factory is high on process loads, which will make it impossible to achieve...

Last reply: Abdullah Tahir, Mar 25, 2024, 1:38 am

Peak Shaving Strategies

NC-v4 EAp2: Minimum Energy Performance
posted by Dave Hubka on Mar 18, 2024, 1:06 pm

The energy used by electric vehichle charging stations within the LEED Project Boundary is not included within the eneryg model. I am wondering, if electric vehicle charging was 'locked out'...

Last reply: Dave Hubka, Mar 18, 2024, 2:02 pm

Any HAP file that contain both of the proposed building and the baseline

NC-v4 EAp2: Minimum Energy Performance
posted by Mohamed Abdelrahim Abdelaal on Jul 30, 2019, 7:33 am

I’m new in modeling, I have a building need to be simulated for leed rating, Can you please share a "HAP" file that contain both of the proposed building and the baseline for any project as a...

Last reply: Abdullah Tahir, Mar 15, 2024, 5:04 am

Predictive Climate Data

NC-v4 EAp2: Minimum Energy Performance
posted by Dave Hubka on Feb 15, 2024, 8:21 am

Are there any firms performing energy models with future predictive climate data rather past published climate data?

If so, I wonder if the ghost of energy modeling future is scarier than...

Last reply: Sarah Leenknegt, Feb 15, 2024, 9:11 am

Envelope Description Reference- Using California Building Energy Efficiency Standard (Title 24) as reference?

NC-v4 EAp2: Minimum Energy Performance
posted by Moses Chong on Feb 5, 2024, 4:33 pm

Hi! I know that we have to describe the construction of the opaque envelope and reference the 90.1 Appendix A table in the minimum energy performance calculation. Can I use the...

Last reply: Jamy Bacchus, Feb 13, 2024, 9:16 pm