[BLDG-SIM] Follow up Elevator Question

[Graham Carter & Megan Lyall]

While elevator energy use is somewhat a function of installed  
connected load it is all a function of how people move through the  
building.  Vertical transporartion is by far the most uncertain base  
building energy end use in office buildings.

We have seen a wide variation in energy use on a m2 NLA pa basis.  On  
the low end a government building with small floorplates and tenants  
who tend not to move around the building vertically other than to eat  
and go to and from work could be around 2 kWh/m2 NLA pa.  On the high  
end a CBD location with small floorplates and a tenant who is  
externally focussed (i.e. has clients / customers regularly coming  
and going) with the coffee shop at ground level could be 10 kWh/m2  
NLA pa or more.  I have heard of buildings with older control gear  
and drives that can use far more than this.

Our Lend Lease headquarters at 30 The Bond in Sydney has open  
staircases that we use to go 2-3 floors up or down.  Most people walk  
to work and arrive at the L4 entrance and thus rarely use the lifts.  
As a result while we meet a lot and have a lot of visitors our lift  
energy use is actually very low.

Richard Peters in the UK and others have been doing a lot of research  
into predicting lift energy use - interesting stuff.  Some of the  
lift manufacturers have software now that they will either use in a  
consultancy role or license to consultants to allow annual energy sue  
to be estimated from lift simulations and empirical data of how  
people typically move through buildings.

Regards,
Graham

On 04/07/2007, at 6:34 AM, Andrew Craig wrote:

> Vikram---
>
>
>
> The horsepower input to an elevator can vary quite a bit depending  
> on the building.  For a high rise building, elevators will  
> typically be rated at 50 hp each (37 kW).  This goes down  
> incrementally with the size of the building to about 10 hp for  
> small elevators (7.5 kW).  These are just numbers I have seen on  
> projects in-house. You should try to contact the electrical  
> engineer for your project and they should be able to give you a  
> better idea of how the elevators are rated.
>
>
>
> Regards,
>
> Andrew Craig, EIT, LEED® AP | Mechanical Designer
>
> INTERFACE ENGINEERING
> 708 SW Third Avenue | Suite 400 | Portland, OR 97204
>
> direct: 503.382.2696
> office: 503.382.2266
> fax: 503.382.2262
> email: Andrew_C at ieice.com
> web: www.ieice.com
>
> Consultants of Choice to the Built Environment for over 35 years
> Kirkland, WA | Portland, OR | Sacramento, CA | Salem, OR |  
> SanFrancisco, CA
>
> From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of  
> Vikram Sami
> Sent: Tuesday, July 03, 2007 12:58 PM
> To: BLDG-SIM at gard.com
> Subject: [BLDG-SIM] Follow up Elevator Question
>
>
>
> Sorry - this is my first elevator model.
>
>
>
> ASHRAE is not very specific (or at least I didn't find a place  
> where it was) about elevator power limitations. What wattage should  
> I use for my base building?
>
>
>
> Vikram Sami, LEED AP
> Direct Phone 404-253-1466 | Direct Fax 404-253-1366
>
> LORD, AECK & SARGENT ARCHITECTURE
> 1201 Peachtree Street NE, Suite 300, Atlanta, GA 30361
> Responsive Design · Technological Expertise · Exceptional Service
> www.lordaecksargent.com
>
> Please don't print this email unless you really have to.
> In the United States, we use enough office paper each year to build  
> a 10-foot high wall that’s 6,815 miles long or two and a half times  
> the distance from New York to Los Angeles.
>
> ~ Wisconsin Department of Natural Resources, “Recycling Facts and  
> Figures,” PUBL CE-163, 2002.
>
>
>
>
>
> From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of  
> Andrew Craig
> Sent: Wednesday, June 27, 2007 12:13 PM
> To: BLDG-SIM at gard.com
> Subject: [BLDG-SIM] Site Lighting in eQUEST
>
> Vikram---
>
>
> Regarding your elevator question, eQUEST has a set of library  
> schedules for elevator usage in several types of buildings (office,  
> apartments, etc.)  These seem reasonable and appear to be based off  
> of the ASHRAE schedules that are found in the 90.1-2004 User’s Manual.
>
>
>
> Regards,
>
>
>
> Andrew Craig, EIT, LEED® AP | Mechanical Designer
>
> INTERFACE ENGINEERING
> 708 SW Third Avenue | Suite 400 | Portland, OR 97204
>
> direct: 503.382.2696
> office: 503.382.2266
> fax: 503.382.2262
> email: Andrew_C at ieice.com
> web: www.ieice.com
>
> Consultants of Choice to the Built Environment for over 35 years
> Kirkland, WA | Portland, OR | Sacramento, CA | Salem, OR |  
> SanFrancisco, CA
>
> From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of  
> Vikram Sami
> Sent: Wednesday, June 27, 2007 8:28 AM
> To: BLDG-SIM at gard.com
> Subject: [BLDG-SIM] Site Lighting in eQUEST
>
>
>
> Going through the LEED 2.2 requirements, I see that site lighting  
> needs to be modeled as well. Has anyone done this in eQUEST? If so  
> - how is it modeled? Do you set up another lighting source with  
> schedule? I looked in the project & site requirements and didn't  
> see a site lighting option.
>
> Also - I am assuming you model elevators in the internal loads/ 
> equipment tab. Does anyone have experience scheduling elevator  
> usage? What kind of schedule do you set for them?
>
> Lastly - the baseline requirements for Appendix G requires that  
> there is no self shading. Can you set that in eQUEST?
>
> Vikram Sami, LEED AP
> Direct Phone 404-253-1466 | Direct Fax 404-253-1366
>
> LORD, AECK & SARGENT ARCHITECTURE
> 1201 Peachtree Street NE, Suite 300, Atlanta, GA 30361
> Responsive Design · Technological Expertise · Exceptional Service
> www.lordaecksargent.com
>
> Please don't print this email unless you really have to.
> In the United States, we use enough office paper each year to build  
> a 10-foot high wall that’s 6,815 miles long or two and a half times  
> the distance from New York to Los Angeles.
>
> ~ Wisconsin Department of Natural Resources, “Recycling Facts and  
> Figures,” PUBL CE-163, 2002.
>
>
>
>
>
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