噴氣增焓與噴液技術(shù)對比課件

VapourInjectionvsLiquidInjectionforRedIceProject162’5b446

LIQUIDINJECTION

VAPOURINJECTION612,3455b5a6162,2’455b3EXVlowerdischargesuperheatincreaseofcondensermassflowhigherdischargetemperaturehigherheatingcapacity2LiquidInjection612,3455b5a6162,2’455b3EXVVapourInjectionEconomizerHXextraspacerequiredEXVSolenoidvalveNCLargeΦ

rigid

piping,brazedconnections+thermalinsulationCompressor:largeflexible(!)pipe,ext.brazed/int.flangedconnections…PWMsolenoidvalveNCcontrol+valveintegrated(EBX)…SmallΦflexiblesteelpipe,screwedconnectorCompressor:thinflexiblepipe,smallscrewedconnectorHARDWARECOMPARISON1componentpercompressor!3VAPOUR/LIQUIDINJECTIONCOMPARISONOperatingpointHPSH380

-7/48/2/5VapourinjectionLiquidinjectionDry(5Ksuperheat)WetEarlyLateTdisch~100°C<dry~65°CtbdHeatingcapacityincrease/stdd~+25%

<dry~0%tbdCOPhincrease~+5%(1)<=dry~0%tbdPabsincrease~+15%>=dry~0%tbdlimitedinterestat-7/48ratingpoint,whereCOPiscriticalCONCLUSIONForRedIce(largescroll,>90%manifolded)liquidinjectionfeaturesthebest(service/addedcost)ratioForsmallersizes(unitary)thebalancemaybereversed…5LiquidInjectionistobeusedonRedIceProjectReasonsAdded

costontheunit

Hardware(HX,EXV+LSV,pipes,cpextracost…forEVI) Labor(brazing,insulationinstallation)Service MAPbenefit:-25/65°Cachievable

only

with

Liq.Inj.

Heating

capacity

maintained

at

low

evaporating

temperaturesTimetomarket

Liq.Inj.onPerformeralready

qualifiedinFRCC(SpeerallLFZ)

Lab

equipment

availability(EVI~1.5year≠project

schedule)6Back-up7LIQUIDINJECTION

Lowaddedcost/conventionalMAPextension,uptoveryhighPR(reliabilityandservice)SuitabletomaintainheatingcapacityatlowevaporatingtemperatureCOPunchangedorslightlyreduced(DRY)VAPOURINJECTIONHigheraddedcost

LimitedMAPextensionHeatingcapacityincreasedCOPincreased

(WET)VAPOUR

INJECTIONregulatedoncpdischargesuperheat

PREMIUMPROPOSAL LargestMAPextensi