Hello All,
I am using Energy Plus software to analyse a building located in Barcelona,
Spain. In the LEED report it is indicating the Electric Demand for space
cooling & Interior Lighting is zero, is it possible?
I have tried many times to solve this but unable to do so, please suggest
me how can i resolve this problem?
Thanks with regards
Sheelam Khare
I am also having a similar problem for an office building in Ohio using eQuest. The annual peak demand by end use report shows zero demand for cooling, yet there is the expected amount of space cooling in the monthly peak demand by end use and the expected amount of space cooling consumption kWh usage. Everything else seems to be in order....
Could this be an eQuest glitch?
Thanks,
Tom Mickley
You have already decided that it is impossible for a working HVAC and lighting system to have zero demand. Have you confirmed that these systems are actually operating? i.e., is there energy consumption? If not, check schedules to make sure the systems turn on or (for HVAC) check setpoints to confirm that there is a demand.
If energy is consumed, but demand is not shown, you probably want to send the file to the E+ Help Desk. (I'm not sure how eQuest users get help :()
James V Dirkes II, PE, BEMP, LEED AP
Best bet for eQuest-specific help is usually the [Equest-users] archives and the mailing list community, and there's an E+ counterpart mailing list as well. That said a substantial amount of eQuest-specific and E+-specific queries are handled here as well on [Bldg-sim] - sometimes it's not always clear when a question is specific to software or more general in nature so the the [bldg-sim] serves as an effective catch-all.
To Tom's eQuest query (and I'm speaking specifically to eQuest - E+ users will have to confirm if any of this applies on your end):
It's important to recognize that monthly and annual "peak demand" values reported in most detailed/graphical reports do not strictly represent the maximum draw of each end-use - they represent the hour with the maximum draw on the associated meter, broken out by end-use through that hour.
By extension, your cooling system(s) can be operating normally and keeping the spaces cool when called for, but not be operating within the hour of maximum draw for each month or for the year. This is not uncommon in the winter months for temperate and heating-dominated climates, particularly when there's substantial electric heating in play to overwhelm what the cooling systems require.
So that said, the graphical "Annual peak demand by end use" report is if I'm not mistaken reporting enduse draws for the peak hour over the whole simulated year - not seeing cooling in this pie chart is simply indicative of more substantial heating operating under the same meter. You can review and confirm if and when cooling plays a part in your monthly peak demands by reviewing the monthly graphical charts or via the PS-E/PS-F detailed reports.
Regards,
NICK CATON, P.E.
Have you all looked at your hourly output to see what's going on there?
That always seems like a prudent first step in model debugging. I look at
hourly output from all models. That gets you closer to the root of the
problem, rather than looking at a particular report that you might or might
not understand.
Hi Tom:
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Please send your .INP and .PD2 files. And what version of eQuest you are running (3.64 or 3.65).
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We need to see the files to best help you.
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John Aulbach, PE