Attaining credits through advanced elevator technology?

9 replies [Last post]
Dec 07 2010 Guest
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I've exhausted all my resources on determining the answers to my many questions. Do anyone know if there is any movement what so ever to achieve credits through more efficient elevator systems as well as advanced dispatching technology?

I know elevators are excluded from most current credit categories. What I don't understand, and help me out here, is if an advanced elevator can consume 40% less energy and also regenerate PF1 power back into the building's power grid, how can that not be accounted for in the new version?

I'm open to any suggestions or opinions on how I can find out more information on this. Thank you!!

9 Comments

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Marcio Alberto Casado Pereira
Feb 01 2013
Guest
4634 Thumbs Up

Elevators - Energy Consumption - Sources

Hi,

Is there any kind of consideration in order to estimate Elevators Energy Consumption, manuals, specific Leed procedure or so?

Thanks in advance.

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Susan Walter Specifications Director, Populous Feb 01 2013 LEEDuser Expert 22431 Thumbs Up

Your elevator supplier will or should have that information for you. On some projects you will have more latitude to take energy consumption into consideration. The impacts show up in EAp2 and EAc1. Other projects, and they all seem to be ones we work on, are limited on elevator selection and have to take the energy hogging elevators as they are offered.

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Tristan Roberts LEED AP BD+C, Executive Editor – LEEDuser BuildingGreen, Inc.
Dec 07 2010
LEEDuser Moderator

elevator question

Jonathan, where are you coming from on this?

Is this a project question, or are you with an elevator company?

As a rule LEED does not award points for specific technologies, whether they be energy-saving elevators or water-saving Living Machines. LEED awards points for the goal, i.e. saving of energy or water. Those are covered by credits, with lots of points available.

What makes you think elevators are excluded from that? What do you mean by the new version?

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Jonathan Stockwell Dec 08 2010 Guest 46 Thumbs Up

I understand LEED will not support specific brands or products. The types of technology I'm referring to are offered by all the main elevator leaders in the world.

I did get my LEED Green Associate certification, but I'm a little hazy when it comes to specifics. I'll give you an example of a project I'm working on.

We plan on using traction elevators with regenerative drives. The drives alone are 40% more energy efficient than the conventional machines. Also, they are able to regenerate power factor 1 energy back into the building's power grid. In addition to those, we are using a new dispatching technology that ultimately reduces the amount of elevator usage and trips.

With this particular situation, can these elevators (I'm guessing overall energy savings compared to conventional) help us in the overall project's E&A targets?

Thanks!

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Martin Lohse electrical engineer, El Design Dec 12 2010 Guest 26 Thumbs Up

As I see the LEED system elevators is included in the total energy for the entire building. If you uses example VDI 4707 (Europe calculation) for calculation the energy, you can see how much the elevators using.

If you have a lift example:
Load 1350kg
Speed 1,75 m/s
Travel 31 m

Without regenerative convert, it’s using 11,540 kw/hours at 1 year.
Width regenerative converter, it’s using 6,987 kw/hours for 1 year.

You save about 35 %, but you have to look at the energy for the total building.

If you will get you point from reward energy, you have to see at total, e.g. solar cell.
If you have 4,553 kw/hours reward energy from the elevator, and it gives you 2.3 KwhA kilowatt-hour is a unit of work or energy, measured as 1 kilowatt (1,000 watts) of power expended for 1 hour. One kWh is equivalent to 3,412 Btu./sq meter reward energy.

This example gives you 4% On-Site reward energy; you get 2 points from the elevator.

If you get 6% reward energy for solar cell and 4% from elevator, you can get total 5 points at On-Site reward energy.

(One elevator can give reward energy equivalent to 25-75 sq meter electrical solar cell)

Sorry my blog is on Danish, martinlohse.blogspot.com but you can use Google translate.

Martin Lohse – El Design
DK-Denmark.

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Jonathan Stockwell Dec 13 2010 Guest 46 Thumbs Up

Tak Martin!

Looks like we just need to get those energy numbers for the regen drives for the project. Thank you guys!

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Dustin Campbell Sustainability Analyst, ETC Group Aug 27 2015 Guest 157 Thumbs Up

I have a project where we will attempt to claim credit for efficient elevators via Exceptional Calculation Methodology. We have strong evidence to suggest the less efficient elevator is standard practice for this client and other similar facilities in our area. We've obtained energy savings through a manufacturers online energy calculator. We obtained first cost investment numbers also from the vendor. Overall there has been time and effort to ensure this building will use the more efficient/expensive elevator system. I think that should fetch a few percentage points on our LEED model cost savings??

I was hoping to find someone on here that has gone through this same situation?

Stay tuned!

Greg Garcia
PE - Energy Engineer
801.278.1927 x111

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michelle bombeck Project Associate, O'Brien & Company May 20 2016 LEEDuser Member 184 Thumbs Up

Dustin - Do you have any updates on your submittal? My project is installing regenerative elevators and the energy modeler is looking for guidance on how to document that savings. Thanks!

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Akif Ali Manager Quality Control, KONE Elevators Dec 06 2016 Guest 3 Thumbs Up

I am working on my thesis for Sustainability in Elevator industry, but am not able to find any relevant books on the subject. Please send me link of the resources, if you have, on this subject which can help me in my dissertation. Thanks.

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