[Bldg-sim] Energy model calibration - normalizing the utility bills to month start-end

[Michael Tillou]

Thanks Joe,

I did not mean to suggest using tmy data but did mean that actual weather
data for the billing period should be used.

One of my favorite sources of real time data is weather underground. They
have a lot of smaller weather stations and a great archive.

Cheers,

Mike
On Jun 22, 2015 10:17 PM, "Joe Huang" <yjhuang at whiteboxtechnologies.com>
wrote:

>  Maybe I'm missing something here, but why can't you just count up the
> degree days for the utility period?
> I hope you're not working with average or "typical year" degree days, but
> the degree days from the same time period.
>
> I also recall that the old Princeton Scorekeeping Method (PRISM) back in
> the 1980's allows the user to enter the degree days for that time period,
> so it's not a new problem.
>
> Joe
>
> Joe Huang
> White Box Technologies, Inc.
> 346 Rheem Blvd., Suite 205A
> Moraga CA 94556yjhuang at whiteboxtechnologies.comhttp://weather.whiteboxtechnologies.com for simulation-ready weather data
> (o) (925)388-0265
> (c) (510)928-2683
> "building energy simulations at your fingertips"
>
> On 6/22/2015 6:09 AM, Jones, Christopher wrote:
>
>  When calibrating an energy model to utility bills the utility bills
> often don’t align with the month start and end.  I have reviewed a couple
> methods to calendar normalize the utility bills but find them somewhat
> unsatisfactory.
>
>
>
> For example the method I am looking at does the following:
>
> The April gas bill runs from March 25 – April 24.  The algorithm takes the
> average number of m3 per day from that bill, applies it to the days in
> April.  Then it takes the average number of days from the May bill which
> runs from April 24 – May 25 and applies that average to the remaining days
> in April.
>
>
>
> The issue is that the March-April period has much higher HDD than the
> April-May period and the “normalized” gas usage is significantly lower than
> the simulation data for April.
>
>
>
> I am wondering if there are any papers or other sources of information as
> to how others approach this problem.
>
>
>
>
>
> [image: cid:image003.png at 01D09C46.E75BA0D0]
>
> *Christopher Jones,*P.Eng.
> Senior Engineer
>
>
>
> *WSP Canada Inc.*
>
> 2300 Yonge Street, Suite 2300
>
> Toronto, ON M4P 1E4
> T +1 416-644-4226
>
> F +1 416-487-9766
>
> C +1 416-697-0065
>
>
>
> www.wspgroup.com
>
>
>  ------------------------------
>
> You are receiving this communication because you are listed as a current
> WSP contact. Should you have any questions regarding WSP’s electronic
> communications policy, please consult our Anti-Spam Commitment
> www.wspgroup.com/casl. For any concern or if you believe you should not
> be receiving this message, please forward this message to us at
> caslcompliance at wspgroup.com so that we can promptly address your request.
> This message is intended only for the use of the individual or entity to
> which it is addressed, and may contain information which is privileged,
> confidential, proprietary or exempt from disclosure under applicable law.
> If you are not the intended recipient or the person responsible for
> delivering the message to the intended recipient, you are strictly
> prohibited from disclosing, distributing, copying or in any way using this
> message. If you have received this communication in error, please notify
> the sender, and destroy and delete any copies you may have received.
>
> WSP provides professional land surveying services through the following
> entities: WSP Surveys (AB) Limited Partnership and WSP Surveys (BC) Limited
> Partnership
>
>
> _______________________________________________
> Bldg-sim mailing listhttp://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to BLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
>
> _______________________________________________
> Bldg-sim mailing list
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
> BLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20150622/b69028a4/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 6574 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20150622/b69028a4/attachment-0003.png>