Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
3

Difference between Ideal Loads Supply Air Total Cooling Rate and District Cooling at peak

asked 2018-07-17 15:15:51 -0500

FLECARP's avatar

updated 2018-07-17 19:23:44 -0500

Version: EnergyPlus 8.7

Buidling: a little shop with one conditioned thermal zone (ZONE1) and one unconditioned attic.

HVAC Template : Ideal Load Air System.

When I sum, hour per hour during over the year, the output "ZONE1:Zone Ideal Loads Supply Air Total Cooling Rate[W]" , I get the same value as the one of "District Cooling [kWh]" of the Annual Building Utility Performance Summary, which seems consistent.

But the maximum value, over the year, of the output "ZONE1:Zone Ideal Loads Supply Air Total Cooling Rate[W]" does not correspond to the "District Cooling [W]" at peak in the Demand End Use Components Summary, which does not seem consistent.

What is the right value to be considered in order to determine the cooling loads of the HVAC system ? - maximum of "ZONE1:Zone Ideal Loads Supply Air Total Cooling Rate[W]" OR - "District Cooling [W]" at peak.

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
3

answered 2018-07-19 16:46:47 -0500

If you report the "Zone Ideal Loads Supply Air Total Cooling Rate" at the Timestep reporting frequency, the peak should match.

edit flag offensive delete link more

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

1 follower

Stats

Asked: 2018-07-17 15:15:51 -0500

Seen: 355 times

Last updated: Jul 19 '18