[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [EnergyPlus_Support] Minimum ventilation ACH in summary report tables

Dear Adam,

As it happens, I got the exact same question recently, posted a question to the Help Desk and was ably assisted by three different people.  Here’s my condensed experience:

·         The OA Summary uses actual air density, so there can be slight fluctuations in the ventilation air change rate due to air temperature variations.

·         E+ always determines occupancy as the number of People > 0.  If you have ANY people in the zone when the fan / air loop is OFF, the A Summary Report will show zero ventilation as the minimum value for that zone (because the fan is OFF while people are present)  That means you need to line up your fan and people schedules carefully or be ready to explain why zero ventilation is OK J.

·         I think that there may be an issue with the AvailabilityManager:NightCycle that I am still pursuing.  In short:

o   I had a 24/7 fan schedule for a hotel guest room zone and also used a Night Cycle Manager that was always ON and referring to the 24/


Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:

The group web site is:

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe