EUI info on sanitary lift stations

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Does anyone know of a source for EUI comparative data for municipal
wastewater lift stations?

Jim Fowler, PE, CEA, CBCP

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206.954.3614

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Retro-Commissioning and Energy Audits of

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Jim Fowler, PE, CEM

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If it were me, I'd start my search with associated equipment reps - if anybody is aware of such studies or guidelines, I'd have to imagine some with the OEM's are in that circle.

Grundfos has a lifecycle cost calculation tool on their website for their lift stations, and I recall them pushing the efficiency of their equipment in their literature and presentations - you might try them specifically to see if they have performed any case studies of their own, or are otherwise aware of any broader annual energy consumption data.

~Nick

[cid:489575314 at 22072009-0ABB]

NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036
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It also seems to me that EUI (energy/ft2 of building) is probably not an appropriate metric for this. The energy use is probably more dependent on how much stuff they move. Energy per ft3 (of 'stuff') might be more appropriate.

Vikram Sami
BEMP, LEED BD+C
Associate Partner

ZGF ARCHITECTS LLP
T 206.521.3509 E vikram.sami at zgf.com
925 Fourth Avenue, Suite 2400
Seattle, WA 98104

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Also worth taking into consideration the static head that the lift station
is working against. A pump station that is moving 10 MGD at 100 ft of head
may use more energy than a pump station that is moving 20 MGD at 30 ft of
head for instance.

I did some audits on two pump stations but was not able to find any
national data that compared pump station energy use.

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That's how they charge the users, right? I totally agree Vikram...still check the EUI since that's what people are looking for as a basis for comparison, but it may be totally out of bounds compared to more common building types.

The energy use will be dependent on the sizing of the pumps and other equipment, which may only loosely correspond to the area of the utility's building that houses the equipment.

Leave a pad for future expansion and gain 2,000 ft2 towards your EUI denominator? Doesn't seem fair...

David

David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
Grumman/Butkus Associates

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FYI.

Check with the ASCE and/or the AWWA, sanitary engineering division.

In general, for College Station, the data shows about 3 Wh/gallon for overall sewage treatment. So , the number should be a fraction of this fur the lift station ..

Jeff

Jeff S. Haberl, Ph.D., P.E.inactive, FASHRAE, FIBPSA
Department of Architecture
Texas A&M University
College Station, Texas 77845-3581
Office: 979-845-6507, Lab: 979-845-6065
Fax: 970-862-2457, jhaberl at tamu.edu, www.esl.tamu.edu

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Another local PNW firm has looked at this, though the data appears to be
on the potable water side. However, perhaps the concepts/signatures are
applicable to your situation.
http://www.pnws-awwa.org/uploads/PDFs/conferences/2013/Fri%20AM%20Dist_Res%2003%20Campbell%20PNWS%20AWWA%20RH2%20Energy%20Efficiency%20Presentation.pdf

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FYI...

Energy measurements for College Station for the potable water side indicate about 1 Wh/gal for each gallon pumped. Both the potable water and sewage values are from metered data from the city (i.e., kWh and gallons). A report detailing this is posted on the ESL's web site.

Jeff

8=! 8=) :=) 8=) ;=) 8=) 8=( 8=) 8=() 8=) 8=| 8=) :=') 8=) 8=?
Jeff S. Haberl, Ph.D.,P.E.inactive,FASHRAE,FIBPSA,......jhaberl at tamu.edu
Professor........................................................................Office Ph: 979-845-6507
Department of Architecture............................................Lab Ph:979-845-6065
Energy Systems Laboratory...........................................FAX: 979-862-2457
Texas A&M University...................................................77843-3581
College Station, Texas, USA, 77843..............................URL:www.esl.tamu.edu
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That was a great piece of information, thank you, David. - I'll look for the
BPA study as well.

I came to the same conclusion as Vikram - kWh/gallons pumped normalized for
head. Anchorage has enough lift stations to create their own EUI database,
that's what I'm recommending going forward.

Thanks to all.

Jim

Jim Fowler, PE, CEA, CBCP

Principal

206.954.3614

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Retro-Commissioning and Energy Audits of

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Jim Fowler, PE, CEM

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