Hello,
I just got the review comment requesting the “specific acceptable range(s) of error”, follow the comment bellow.
“TECHNICAL ADVICE:
Please revise the Measurement and Verification Plan, as necessary, to ensure that all required components of Option D of the 2003 IPMVP are included. Identify the specific acceptable range(s) of error (generally there is a different range allowable for both monthly and annual data).”
Could anyone confirm if the “specific acceptable range(s) of error” that they are requesting is the MBE (mean bias error) and the CV(RSME) (coefficient of variation of the root-mean-squared error)?
Thanks
Gordon Shymko
PrincipalG. F. Shymko & Associates Inc.
138 thumbs up
December 20, 2012 - 3:34 pm
The acceptable range of simulation calibration error varies with the nature of the project, the M&V objectives and associated desired rigor, and the complexity of the building and its systems. Having said this, I would consider a simulation to well-calibrated for most purposes and buildings if it meets the following criteria:
• +/- 10% for total annual energy use
• +/- 10% for each of total natural gas and electricity use
• +/- 15% for total monthly energy use
• +/- 15% for each of total natural gas and electricity use on a monthly basis for any month with use higher than 30% of the peak month
• +/- 15% for end-uses on an annual basis
• +/- 15% for end-uses on a monthly basis for any month with use higher than 30% of the peak month
• +/- 20% for individual major systems on an annual basis e.g. plants, individual air handling systems
• +/- 20% for individual major system on a monthly basis for any month with use higher than 30% of the peak month for that system e.g. plants, individual air handling systems
I hope that this helps put some perspective to the issue.
Marina Andrade
Sustainability Consultancy ServicesCushman & Wakefield
17 thumbs up
December 21, 2012 - 6:40 am
Thanks Gordon!