Hello,
I have some questions regarding Option D - Calibrated Simulation:
1) Can we use the ASHRAE 90.1-2007 baseline used in EA cr 1 -Option1 as the M&V baseline ?
2) I understand from the above that one of the ways to measure the savings is to substract the metered post-construction energy use from the energy use of the calibrated baseline model (i.e. baseline calibrated with actual weather and occupancy). If this is the case, then I do not need to calibrate the proposed model as well and compare it to the actual energy consumption ? do I ?
Thanks for the help.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5906 thumbs up
December 20, 2010 - 10:48 am
Yes, 90.1-2007 is an acceptable baseline.
In order to produce a calibrated baseline model you will first have to calibrate the proposed model. So you must calibrate the proposed model with the actual utility bills in order to determine if you have achieved an acceptable level of calibration.
Maya Karkour
EcoConsulting872 thumbs up
April 6, 2011 - 4:10 am
Marcus,
Thanks for your reply.
I presume that if the results from the calibrated proposed model differ from the annual energy costs (deduced from bills) by over 10%, we will need to develop an corrective action plan, am I right ?
Thanks,
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5906 thumbs up
April 6, 2011 - 9:07 am
Your M&V Plan should contain a general corrective action plan in the event that the savings are not verified. The Plan would also spell out the acceptable accuracy of the calibration. Once calibrated within the acceptable accuracy the actual savings are then determined by comparing the calibrated model to a calibrated baseline model. If the actual savings differ from the predicted savings by a significant amount then the corrective action plan kicks in.