8/14/2019 Retrocommissioning Case Study: San Diego Marriott Hotel & Marina Overview

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www.sandiegorcx.com

OverviewMaott itatoal, a hosptalty compay th locatosoldd, sought ays to duc gy cosumpto admmz th omtal mpacts of opatos at ts1.4 mllo squa foot Sa Dgo Maott Hotl & Maa Sa Dgo, Calfoa. Th 1,362 oom hotl s a full-scsot-styl popty that cluds mtg spac, multplstauats, ad a maa. Th Maott Hotl & Maasgs suspctd that th oppotuts to duceerg se d icrese he prbii, s we s impregust comfot. Fo ths asos, Maotts maagmtdcdd to patcpat th Sa Dgo rtocommssog(RCx) Prgrm, prgrm dmiisered b S Dieg Gs &Eecric (SDG&E) hrgh crc wrded Prdegy Cosato, ic (PeCi).

Th Sa Dgo rCx Pogam suppotd Maott attageerg d cs sigs b pridig he Mrri He &Maa th:

A -dpth rCx stgato to dtfy sags oppotuts implmtato assstac Dcmei d riig fr bidig sff impemeed

masus Ogog pfomac tackg of masus to su

psstc

Maotts patcpato th rCx Pogam sultd a

8.4% ducto gy us at th Maott Hotl & Maath a xpctd aual cost sags of $272,500. i add-to, aoth 10.6% ducto gy us, o $346,000 pei sigs, hs bee ideied fr fre impeme-tato at th popty.

InvEStIGatIon & IMPlEMEntatIonFInDInG tHE SavInGS oPPoRtunItIESthrgh i-deph sis f he bidig peris,th tocommssog pod, PeCi, okd closlywih bidig sff d fd h seer periimpremes he chiers, pmps, d ir disrib-i ssem cd brig drmic sigs d imprep cpci b:

elmatg ucssay smultaous hatg adcoolg

rducg supply fa spd though tmal utpogammg mpomts

Re-ebig he demd-cred eiisystm th pakg gaag

elmatg ucssay pumpg gy fo thladscap at fatus

Isig ribe freqec dries eprrpumps ad cods pumps

Modfyg cotol squcs fo pumpg systms

Eliminating unnecessary pumping energy for the landscape

water features

Building: Sa Dgo Maott Hotl & Maa

Location: Sa Dgo, CA

Year(s) built: 1984 ad 1987 (South To)

Size: 1.4 mllo sq. ft

Scope of retrocommissioning project: Chlld ad hatgwer ssems, ir disribi ssems, dmesic w-

t systms, ladscap at fatus

Project timeline: 2004-2006

QuantIFIED CoStS anD SavInGS to-DatE

Annual kWh savings: 1,470,000 kwh

Annual therm savings: 88,000 thms

Total cost savings: $272,500

Total project cost: $391,716

Total program incentive: $196,412

Net owner cost: $195,304

Simple payback: < 1 ya

PrOjeCT BeneFiTS

Chlld at capacty mpomts

rducd chll utm ad sultg cas

qupmt lf

Mre efcie peris

Documtd opato ad matac pocdus

Hads-o tag fo O&M staff

:: QuICk FaCtS

rtocommssog

a ssemic prcess fr imprig exisig bidigs

perfrmce b ideifig d impemeig reie w

cost opatoal ad matac mpomts.

Photo courtesy of Marriott International

REtRoCoMMISSIonInG CaSE StuDy: San DIEGo MaRRIott HotEl & MaRIna

8/14/2019 Retrocommissioning Case Study: San Diego Marriott Hotel & Marina Overview

2/2www.sandiegorcx.com

The San Diego Retrocommissioning Program is funded by California utility customers and administered by San Diego Gas & Electric Company (SDG&E ) under the auspices of the California Public

Utilities Commission, through a contract awarded to Portland Energy Conservation, Inc (PECI). California customers who choose to participate in this program are not obligated to purchase any ad-

ditional services offered by the contractor. The trademarks used herein are the property of their respective owners.

IMPlEMEntInG EnERGy SavInGS MEaSuRESEerg-sig mesres ideied drig he iesigiwere impemeed rge b Mrri sff, whie ssisced mesre erici ws crried b PECI. t impemee mesre, he bidigs sff were high-deep i md,diggig bcges i wer fere pipes impre he

efciec f he fi pmps r gig be dbed he c f d whie hepig se er $17,000 iaual lctc costs du to xcss pumpg.

Thoughout mplmtato, th Maott Hotl & Maasbmied regr prgress reprs PECI d receied impe-mtato assstac to complt ach gy-sag masu.Follog mplmtato, pfomac tackg acttswere esbished hep esre rercmmissiig ciiiesres i persisece f bees d sigs er ime.

the Mrri He & Mris bidig sffs dedicito tocommssog ffots has ot oly mpod thopato of th popty, t has g th staff th oppo-i ideif prbems h migh he bee misseddug costucto o tal qupmt stallato. rt-rcmmissiig wi s hep he sff ideif prbemsthat may dlop thoughout th hotl poptys lf.the Mrri He & Mri RCx prjec hs bee hgesccess fr he he, resig i sigic eerg sigsad casd hotl gust comfot, as ll as ag t a2006 Sa Dgo excllc egy aad fo ts commt-me eerg efciec.

$0 $20,000 $40,000 $60,000 $80,000 $100,000 $120,000 $140,000

Install VFD on evaporator pump

Install VFDs on domestic water booster pumps

Install VFD on condenser pump

Optimize flow and scheduling of water feature pumps

Re-enable demand-controlled ventilation on parking garage

Reduce simultaneous heating and cooling(Fix valves, replace failed fan VFD, lower VAV box flow rates)

Electric Savings

Gas Savings

At th Sa Dgo Maott Hotl & Maa, tocomms-

sog has hlpd us sa almost $300,000 a ya gycosts. just as mpotatly, th tocommssog pocss

ge r bidig sff beer dersdig f he bid-

gs systms opatos ad ho to opat thm mo

efcie.

e.j. Hlts, rgoal Dcto of egy

:: FOr MOre inFOrMATiOn

Th Sa Dgo rtocommssog Pogam sw ibe hep S Dieg Gs & Eecric(SDG&E) commcal customs tocom-

msso th faclts. Though th Pogam,experieced egieers wr cse wih bidigwers d heir sff d cs-effecie ws pimize heir bidigs perfrmce, wereerg bis, d impre ccp cmfr.

visi he prgrm websie www.sdiegrcx.cmto la ho tocommssog ca hlp you m-pre r bm ie, wh expec s prici-pat th Pogam, ad ho th pogam ctsa stuctud ad pad. Plas cotact us th ayqesis r bi prgrm ppici.

San Diego Retrocommissioning Program

(866) 961-6144sadgocx@pc.og.sadgocx.com

rcommdd masus fo

tocommssog ad th

assocatd cost sags.

REtRoCoMMISSIonInG CaSE StuDy: San DIEGo MaRRIott HotEl & MaRIna

:: PrOjeCT PArTnerS

Building Manager:Maott itatoalCotact: e.j. Hlts.maott.com

Retrocommissioning Providers:PECICotact: Haah Fdma

.pc.ogFacility Dynamics EngineeringCotact: Dad Slls.facltydyamcs.com

Building Owner:Host Hotl ad rsots.hosthotls.com

Eerg sigs reec icipedprjec sigs bsed impemeemasus. Actual gy sags mayay th ach poct.

mailto:sandiegorcx@peci.orghttp://www.sandiegorcx.com/http://marriott.com/default.mihttp://www.peci.org/http://www.facilitydynamics.com/http://www.hosthotels.com/http://www.hosthotels.com/http://www.facilitydynamics.com/http://www.peci.org/http://marriott.com/default.mihttp://www.sandiegorcx.com/mailto:sandiegorcx@peci.org