[BLDG-SIM] Traction Elevators and LEED Baseline

[Erik Dyrr]

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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