[BLDG-SIM] eQuest report errors
Sheila Sagerer
sagerer at sevengroup.com
Wed Dec 6 09:45:56 PST 2006
Good afternoon Everyone,
Last night, I encountered two eQuest errors I've never seen before. My
project uses a chiller and boiler with 5 main VAV/reheat AHUs for large main
areas and about 25 fan-coil units for individual smaller areas. Four of the
5 AHUs have enthalpy wheel heat recovery. There are also 4 ERVs to supply
tempered OA to the fan coils. I was troubleshooting for too many hours
outside throttling range when the first error occurred (v3.6):
1. When checking the reports, I noticed "-nan" in the BEPS, BEPU & ES-D
reports in the miscellaneous equipment and space cooling electric columns.
At first I assumed that there was an error that caused excessive electric
use for those categories. However, I removed ALL miscellaneous equipment
loads and schedules from the entire project, reran the simulation and still
had the "-nan" in the reports in both the miscellaneous equipment and space
cooling electric columns. I re-entered my data and again saw no change in
the sim reports. It finally disappeared when I saved the project as a new
file and reran. Any ideas?
2. The second error occurred when I tried to add DCV to AHU-3. I
thought the simulation ran fine. However, when checking the reports, I
noticed that both space cooling and domestic hot water use completely
disappeared - not even zeros in the BEPS report columns. I reran the
simulation and ended up with 0's for both categories. When I removed the
DCV, both categories came back. What does domestic hot water use have to do
with DCV in an Auditorium???? Again, any ideas?
Thanks and have a nice day.
Sheila Sagerer
Energy Engineer, EIT, LEED AP
Energy Opportunities, Inc, a 7group company
Phone: 717-880-9069
Fax: 717-291-9497
www.sevengroup.com
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