Course Gshp

8/9/2019 Course Gshp

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Photo Credit: Geothermal Heat Pump Consortium(NREL PIX)

Clean Energy Projet !nalysis CourseClean Energy Projet !nalysis Course

round-Source Heat Pump

round-Source Heat Pump

Project Analysisroject Analysis

© Minister of Natural Resources Canada 2001 – 2004.

Philadelphia Enterprise Centre" #$! % &' G$HPs or Heating and Cooling




ObjectivesObjectives

Re*ie+ ,asis o Ground-$oureRe*ie+ ,asis o Ground-$oure

Heat Pump (G$HP) systemsHeat Pump (G$HP) systems

Illustrate .ey onsiderations orIllustrate .ey onsiderations or

G$HP projet analysisG$HP projet analysis

Introdue RE/$reenIntrodue RE/$reen00 G$HP ProjetG$HP Projet

1odel1odel




HeatingHeating

CoolingCooling

Hot +aterHot +ater

$ound permarost$ound permarost

oundationsoundations

…but also…

E2ieny

3ereased maintenane

3ereased spae needs Lo+ operating osts

What do GSHP systemsWhat do GSHP systems

provide?provide?

$ta,le apaity

Comort 4 air 5uality

Redued pea. eletrial

loads or air onditioning

Photo Credit: $olar 3esign !ssoiates (NRELPIX)

Impat &666 Home" 1assahusetts" #$!

Residential Heat Pump




7878 Earth onnetionEarth onnetion Ground-oupled

Ground+ater

$urae +ater

&8&8 Li5uid-soure heatLi5uid-soure heat

pumppump

9898 Interior heatingInterior heatingooling distri,utionooling distri,utionsu,systemsu,system Con*entional dut+or.

Components of GSHP SystemsComponents of GSHP Systems

77

&&

99




Liquid-Source Heat PumpLiquid-Source Heat Pump

;ater-to-air heat;ater-to-air heat

pumppump

Re*erses diretionRe*erses diretion

98< to 9< .; o98< to 9< .; o

ooling per unitooling per unit

1ultiple units or1ultiple units or

,ig ,uildings,ig ,uildings

E=ess heat ollo+ing ompression pro*ides hotE=ess heat ollo+ing ompression pro*ides hot

+ater *ia desuperheater+ater *ia desuperheater




ypes of !arth Connectionypes of !arth Connection

>ertial (GCHP)>ertial (GCHP) Ro.y ground

1ore e=pensi*e

Little land used

High e2ieny

Hori?ontal (GCHP)Hori?ontal (GCHP) 1ost land used

Less e=pensi*e

$mall ,uildings

/emp8 *aries

Ground+ater (G;HP)Ground+ater (G;HP) !5uier@Injetion

Least e=pensi*e

Regulations

Aouling

!lso surae +ater and standing olumn heat e=hangers!lso surae +ater and standing olumn heat e=hangers


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GSHP "esource#GSHP "esource#

Ground emperaturesGround emperatures

Ground a,sor,s a,out halGround a,sor,s a,out hal

o sunBs inident energyo sunBs inident energy

Ground dampensGround dampens

temperature *ariationtemperature *ariation

G$HP more e2ient

/emperature *ariation /emperature *ariation

dereases +ith depthdereases +ith depth

Negligi,le ,elo+ 7< m

Loal ground temperatures depend on limate" groundLoal ground temperatures depend on limate" ground

4 sno+ o*er" slope" soil properties" et84 sno+ o*er" slope" soil properties" et8

Graphi: Canadian uilding3igest



!$amp%es of GSHP System!$amp%es of GSHP System

CostsCosts

#tility su,sidy to lo+er pea. air#tility su,sidy to lo+er pea. air

onditioning loadsonditioning loads

Initial Annual Annual Annual AnnualCosts Heating Cooling Total Energy

Oil/AC $16,000 $600 $900 $1,500 27 MWh

GSHP $20,500 $450 $600 $1,050 11 MWh

Connecticut, USA, 275 m2 House

Initial Annual Annual

Costs Heating Energy

Electric $8,000 $800 20 MWh

GSHP $13,000 $350 65 MWh

Finland, 150 m2 House

Photo Credit: $uomen LDmppumppute.nii..a Fy

Photo Credit: GeoE=hange Consortium

Rising energy ostsRising energy osts En*ironmental onernsEn*ironmental onerns !ir onditioning is ,onus!ir onditioning is ,onus



Ground-Source Heat PumpGround-Source Heat Pump

ProjectProject

ConsiderationsConsiderations 1ost ost-eeti*e +hen:1ost ost-eeti*e +hen: Heating and ooling re5uired

Large seasonal *ariations in temperature

Ne+ onstrution or H>!C replaement

Aor heating: lo+ eletriity osts and highgas 4 oil osts

Aor ooling: high eletriity osts and pea.load harges

!*aila,ility o trenhing and drilling!*aila,ility o trenhing and drillinge5uipmente5uipment

#nertainty a,out ost o e=hanger#nertainty a,out ost o e=hangerinstallationinstallation

CustomerBs riteria or ost-eeti*eCustomerBs riteria or ost-eeti*ePhoto Credit: Craig 1iller Produtions and 3FE

(NREL PIX)

G$HP Installation

Heat E=hanger Layout"Commerial uilding



E=amples: !ustralia" Germany and $+it?erlandE=amples: !ustralia" Germany and $+it?erland

"esidentia% &ui%din' Systems"esidentia% &ui%din' Systems

High-end homesHigh-end homes

Higher apital osts

Longer term *ie+o ost-eeti*e

En*ironmental oromort ,enets

#tility inenti*e#tility inenti*e

an ,e aan ,e a

signiant atorsigniant ator

Photo Credit: undes*er,and ;DrmePumpe (;P) e8>8

Photo Credit: GeoE=hange Consortium Photo Credit: E,erhard 4 Partner !G

&6 .; Ground+ater Heat Pump" Germany 3rilling Rig or >ertialoreholes" $+iss Residene

9&6 !partments" $outh !ustralia



E=amples: # and #$!E=amples: # and #$!

Commercia% &ui%din' SystemsCommercia% &ui%din' Systems

$hort pay,a. periods$hort pay,a. periodsoten re5uired (J < yrs)oten re5uired (J < yrs)

Land a*aila,ility may poseLand a*aila,ility may posepro,lemspro,lems

Less internal spae usedLess internal spae used

$imple" distri,uted ontrols$imple" distri,uted ontrols

Redued *andalism ris.Redued *andalism ris.

Redued pea. load hargesRedued pea. load harges

!u=iliary heating not!u=iliary heating notneededneeded

Photo Credit: Groenholland 8>8

Photo Credit: 1arion Pin.ley (NREL PIX)Photo Credit: International Ground $oure HeatPump !ssoiation

uilding Cluster" entu.y" #$!Ailling $tation" ansas" #$!

Commerial uilding" Croydon" #



E=amples: Canada and #$!E=amples: Canada and #$!

(nstitutiona% &ui%din' Systems(nstitutiona% &ui%din' Systems

Longer pay,a.s aeptedLonger pay,a.s aepted

1ore open to inno*ati*e systems1ore open to inno*ati*e systems

$imultaneous heating and$imultaneous heating andooling loadsooling loads

Photo Credit: Ro,ert R8 KonesF.lahoma$tate #ni*ersity (NREL PIX)

/renhing or Hori?ontal E=hanger

$hool" ue,e" Canada

Photo Credit: Natural Resoures Canada



"!Screen"!Screen)) Ground-Source HeatGround-Source Heat

Pump Project *ode%Pump Project *ode%

;orld-+ide analysis o energy prodution" lie-yle;orld-+ide analysis o energy prodution" lie-yleosts and greenhouse gas emissions redutionsosts and greenhouse gas emissions redutions Hori?ontal 4 *ertial losed-loop

Ground+ater open-loop

Residential" ommerial"

institutional 4 industrial

Currently not o*ered:Currently not o*ered:

$urae +ater G$HPs

Long-term thermal im,alanes in theground

$imultaneous heating 4 ooling(,lo. loads only)

;ater heating



$ee e-/e=t,oo.

Clean Energy Projet !nalysis:RE/$reen® Engineering and Cases

Ground $oure Heat Pump Projet !nalysis

Chapter

"!Screen"!Screen)) G$HPG$HP Energy CalulationEnergy Calulation





Conc%usionsConc%usions

G$HPs pro*ide heating" ooling 4 hot +aterG$HPs pro*ide heating" ooling 4 hot +ater

Ground dampens temp8 *ariations 4 leads to high G$HPGround dampens temp8 *ariations 4 leads to high G$HP

e2ieniese2ienies

G$HP initial osts are higher" ,ut F41 osts are lo+erG$HP initial osts are higher" ,ut F41 osts are lo+er

Climates re5uiring heating and ooling are most promising

RE/$reenRE/$reen0 estimates:estimates:

Are5ueny distri,ution o outside temperature

uilding loads as a untion o outside temperature

!nnual spae heating and ooling energy ,enets

RE/$reenRE/$reen00 is an annual analysis alulation that an ahie*eis an annual analysis alulation that an ahie*e

auray ompara,leauray ompara,le to hourly simulation modelsto hourly simulation models

RE/$reenRE/$reen00 an pro*ide signiant preliminary easi,ility studyan pro*ide signiant preliminary easi,ility study

ost sa*ingsost sa*ings


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,uestion,uestions?s?

Ground-$oure Heat Pumps Projet !nalysis 1oduleRE/$reen0 International Clean Energy Projet !nalysis Course

.retscreen.net.retscreen.netAor urther inormation please *isit the RE/$reen ;e,site at

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Course Gshp