[BLDG-SIM] Traction Elevators and LEED Baseline

Erik Dyrr erik.dyrr at gmail.com
Tue Nov 20 11:43:47 PST 2007


That would be great if you could report back following the USGBC audit.

On 11/17/07, Zarske, Jim <jzarske at nexant.com> wrote:
>
>  We just completed a project with KONE's high efficiency elevator system.
> We assumed hydraulic to be the baseline, and the KONE traction elevators to
> be the EEM.  KONE has their own software where they ran the analysis for us
> for both system types.  They provided the baseline and EEM energy usuage
> (kW) of both elevator systems.  We plugged these values into eQUEST as a
> direct load to the electric utility meter and used the elevator
> default schedule in the eQUEST library.
>
> This project is going for LEED and we'll see if this methodology works for
> USGBC.
>
>  James Zarske, PE, CEM, LEED AP
> Nexant, Inc.
> www.nexant.com
> Direct: 303.402.2497
> Fax: 303.440.6644
>
>  ------------------------------
> *From:* BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] *On Behalf Of *Erik
> Dyrr
> *Sent:* Friday, November 16, 2007 11:06 PM
> *To:* BLDG-SIM at gard.com
> *Cc:* BLDG-SIM at gard.com
> *Subject:* [BLDG-SIM] Traction Elevators and LEED Baseline
>
>
>  I was also just in the process of developing a calculation. I sent an
> email to Otis Elevator inquiring if they had worked through this already,
> but recieved no reply.  There is an interesting ACEEE paper on elevator
> energy consumption and efficiency at h
> ttp://www.aceee.org/buildings/coml_equp/elevators.pdf<http://www.aceee.org/buildings/coml_equp/elevators.pdf>
> I would be interested to see how anyone has calculated savings or
> collaboration if you are working through it now.
>
> Erik Dyrr
> KEMA
>
>
>
> On 11/16/07, Miller, Nathan <nathan.miller at stantec.com> wrote:
> >
> > I have submitted a LEED-CS v2.0 project for review where we took credit
> > for elevator efficiency (I haven't received any comments back yet, so I
> > don't know if they will go for it). That being said, I also review LEED
> > EAc1 submissions, on behalf of the USGBC, and would likely allow such an
> > ECM as long as the calculation methodology was clearly laid out and well
> >
> > supported.
> >
> > I used manufacturer data (horsepower ratings) for the traction elevator
> > and compared to a "typical" hydraulic elevator. I couldn't find any
> > reputable source to create a partial load schedule for the motor, so I
> > applied the appropriate elevator schedule (in this case it was an
> > office) from the schedule tables that can be found at the end of the
> > Appendix G section of the ASHRAE 90.1-2004 User's Manual. I also put the
> >
> > elevators on their own electric meter so that I could easily sort out
> > that data. It certainly isn't a highly-refined calculation, but
> > shouldn't be any worse than the estimate you would have to make to
> > account for elevator energy in the first place.
> >
> > I've heard there are some programs that specifically model elevator
> > systems (more for optimizing usage than energy), but I haven't used any
> > of them. Anybody know if these are a more accurate way to estimate
> > elevator energy usage?
> >
> > I would also recommend reading some of the papers published by Lutfi
> > Al-Sharif (an engineer or professor from the UK, I believe), who is one
> > of the foremost experts in elevator energy usage, as far as I can tell.
> >
> > Nathan Miller
> > Mechanical Engineer
> > Stantec
> >
> > -----Original Message-----
> > From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Jon
> > Evans
> > Sent: Friday, November 16, 2007 3:13 PM
> > To: BLDG-SIM at gard.com
> > Subject: [BLDG-SIM] Traction Elevators and LEED Baseline
> >
> > Does anyone have experience using the exceptional calculation method
> > (ASHRAE
> > 90.1 Appendix G Section G2.5) to justify traction elevators as an
> > efficiency improvement over hydraulic elevators?
> >
> > I searched the LEED CIR rulings and didn't find much on the exceptional
> > calculation method or changing the process load for elevator upgrades.
> > (Appendix G Table G3.1 line 12 says that the elevator load must stay the
> > same).
> >
> > Thanks!
> >
> > -Jon
> >
> >
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