First time here? Check out the Help page!

Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
0

District Cooling in ASHRAE Energy Cost Budget Method (continued)

asked Dec 5

Srecko Curkovic's avatar

This question is an updated version of my original question posted here: https://unmethours.com/question/99416.... There have been changes in the proposed system design which affected the choice of the baseline system.

I'm working on a baseline building energy model in IES VE 2024 following ASHRAE 90.1-2019 Energy Cost Budget Method. Per ECB guidelines, my baseline system should be System 2 (chilled water, hot-water fossil fuel boiler). The proposed model includes district cooling (water-cooled chillers + cooling towers + pumps). What are ECB guidelines regarding district cooling in this case? Do I need to model the baseline cooling plant same as in the proposed model (use the same efficiency)? For example, a virtual chiller? All I could find is the footnote under Table 11.5.2-1 which refers to Section 11.4.3 which only talks about purchased energy rates.

Preview: (hide)

1 Answer

Sort by » oldest newest most voted
0

answered Dec 5

crduggin's avatar

It is my understanding that district cooling should be modeled as purchased, cost neutral in ECB. This would mean modeling a virtual DES chiller in baseline and proposed with the same efficiency. If there is a specific purchased CHW rate, it will require post processing.

Preview: (hide)
link

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops

Careers

Question Tools

Stats

Asked: Dec 5

Seen: 67 times

Last updated: Dec 05 '24