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

How to sub-meter two buildings with same central plant?

asked 2019-07-23 23:40:06 -0500

Rocky Lin's avatar

updated 2019-07-24 07:59:16 -0500

Dear all,

I'm modelling a project with two buildings served by the same central cooling plant. Building A is a commercial building, while Building B is commercial + office(with different setpoint & schedule). My problem now is how to analyze the consumption of individual building easily, regarding two aspects below:

  1. For zone-wise consumption such as lighting and interior equipment, is there any way to sub-meter individual building without defining complicated zonelists (such as A_liftlobby_commercial, B_toilet_office, etc.)?

  2. For central HVAC consumption such as chiller, pump and cooling tower, my current approach is to post-process the result in excel. The logic is to distribute the central consumption to zones based on terminal cooling demand and then get individual building consumption by filtering the zone names. Can anyone kindly suggest smarter approach for such analysis?

Many thanks


edit retag flag offensive close merge delete

2 Answers

Sort by ยป oldest newest most voted

answered 2019-07-24 11:56:00 -0500

Not really, see my question...

edit flag offensive delete link more

answered 2019-07-25 07:00:35 -0500

TomB's avatar

you can use the End Use Subcategory on lights and equipment to easily create additional meter outputs in the energy plus report summary report. If you are using OpenStudio, a measure may be required to access the End Use Subcategory on light definitions and equipment definitions. For plant attribution, use output variables measuring volume flow rates. If the buildings are thermally seperate, I would be tempted to have two seperate models. Using that approach you could run one model to get the total ( chilled ? ) water from building A and represent that chw demand on the total plant system with a Load Profile.

edit flag offensive delete link more



p.s Australia is good at metering. ozzie ozzie ozzie oi oi oi

TomB's avatar TomB  ( 2019-07-25 07:01:18 -0500 )edit

Your Answer

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

Add Answer


Question Tools

1 follower


Asked: 2019-07-23 23:40:06 -0500

Seen: 468 times

Last updated: Jul 25 '19