Refrigeration System Component (3) [Compatibility Mode]

8/4/2019 Refrigeration System Component (3) [Compatibility Mode]

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THERMAL ENVIRONMENT

ENGINEERING

Air Conditioning Clinic Hantoro, R.

Air Conditioning Clinic Hantoro, R. American Standard Inc. 1999

Hantoro, R.Energy And Environmental Engineering Laboratory

Engineering Physics - ITS


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RefrigerationSystem Components

Air Conditioning Clinic TRG-TRC005-EN

Air Conditioning Clinic TRG-TRC005-EN

American Standard Inc. 1999


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Vapor-Compression Refrigeration

condensercondenser

Air Conditioning Clinic Hantoro, R.

Air Conditioning Clinic Hantoro, R. American Standard Inc. 1999

expansionexpansiondevicedevice

compressorcompressor

evaporatorevaporator


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Air Conditioning Clinic TRG-TRC005-ENAir Conditioning Clinic TRG-TRC005-EN American Standard Inc. 1999

per o one Refrigeration Cycle


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Refrigeration Cycle

Air Conditioning Clinic Hantoro, R.Air Conditioning Clinic Hantoro, R. American Standard Inc. 1999

A B

pressure

pressure

enthalpyenthalpy



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C

Refrigeration Cycle


A

compressorcompressorpressure

pressure

enthalpyenthalpy

evaporatorevaporator B


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condensercondenser

Refrigeration Cycle

CD


A

pressure

pressure

enthalpyenthalpy




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Dcondensercondenser

Refrigeration Cycle

C



A

pressure

pressure

enthalpyenthalpy




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per o wo Condensers



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propellerpropellerfanfan

Air-Cooled Condenser


subcoolersubcooler

outdooroutdoor

airaircondensercondensercoilcoil


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DC

Effect of Subcooling

{

subcoolingsubcooling


A

pressure

pressure

enthalpyenthalpy

B

AI

refrigerationrefrigerationeffecteffect

D

I


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Centrifugal Fan Air-Cooled Condenser


centrifugalcentrifugalfanfan

condensercondensercoilcoil


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Evaporative Condenser

fanfan


sumpsumppumppump

condensercondensercoilcoil

re r geranre r geranvaporvapor

subcoolersubcoolerliquid refrigerantliquid refrigerant


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Water-Cooled Condenser

hot, refrigerant vaporhot, refrigerant vapor95F95F[35C][35C]


cooling watercooling water

subcooled, liquidsubcooled, liquidrefrigerantrefrigerant

subcoolersubcooler85F85F[29C][29C]


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Cooling Tower

sprayssprayspropellerpropellerfanfan


fromfrom

condensercondenser

toto

condensercondenser

sumpsump

outdooroutdoorairair

85F85F

[29C][29C]

95F95F

[35C][35C]


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Condenser Control

Condenser capacity is influenced by:

Temperature difference between refrigerant andcooling media


Flow rate of refrigerant through condenser


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full loadfull load

condenser heatcondenser heatrejection capacityrejection capacity

full loadfull load

Condenser Capacity


pressure

pressure

enthalpyenthalpy

part loadpart load part loadpart loadcondenser heatcondenser heatrejection capacityrejection capacity


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Condensing Temperature Control

flowflow--regulatingregulatingvalvevalve


condensercondenserwater pumpwater pump

condensercondenser


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Vary Condenser Water Flow Rate

cooling towercooling tower cooling towercooling tower


condensercondenser

variablevariable--speedspeeddrivedrive

condensercondenser

bypass pipebypass pipedivertingdivertingvalvevalve


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cooling towercooling tower

variablevariable--speedspeeddrivedrive

cooling towercooling tower

Vary Entering Water Temperature


condensercondenser

condensercondenser

bypass pipebypass pipe divertingdivertingvalvevalve


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Cooling Tower Bypass

40F40F[4C][4C]


condensercondenser

bypass pipebypass pipe

divertingdivertingvalvevalve

65F65F[18C][18C]

55F55F[13C][13C]


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Air-Cooled Condenser Control

low

low

damperdamper

A B


heat rejection capacityheat rejection capacity

condensera

ir

condensera

ir

fanfanA

fanfanB

fanfanA


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Condenser Flooding Control

B

C

condensercondenser




liquid receiverliquid receiver

A expansionexpansionvalvevalve

discharge linedischarge line


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per o ree Evaporators



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Finned-Tube Evaporator

liquid/vaporliquid/vaporrefrigerantrefrigerant


refrigerant vaporrefrigerant vapor

a r owa r ow


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Turbulent Flow



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Finned-Tube Evaporator

liquid/vaporliquid/vapor

refrigerantrefrigerant


refrigerant vaporrefrigerant vapor

liquidliquiddistributordistributor

a r owa r ow

suctionsuction

headerheader


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Superheat

A

BB


superheatsuperheat

{{A C

B

C


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Shell-and-Tube Evaporator

chilledchilledwaterwaterreturnreturn

chilledchilled

waterwatersupplysupply

bafflesbaffles


refrigerantrefrigerantvaporvapor

tube bundletube bundle

liquid/vaporliquid/vaporrefrigerantrefrigerant


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Shell-and-Tube Evaporator


bafflesbaffles


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Finned-Tube Evaporator Control

expansionexpansionvalvevalve




liquidliquidrefrigerantrefrigerant


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Face-Split Arrangement

distributorsdistributors



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Face-Split Arrangement

80F80F[27C][27C]


30F30F[[--1.1C]1.1C]

55F55F[13C][13C]

80F80F[27C][27C]


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Intertwined Arrangement



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Row-Split Arrangement



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Row-Split Arrangement70F70F[21C][21C]


80F80F[27C][27C] 55F55F[13C][13C]


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Shell-and-Tube Evaporator Control

shellshell--andand--tubetubeevaporatorevaporator



liquidliquidrefrigerantrefrigerant expansionexpansion

valvevalve


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Refrigeration

System Components

per o our Expansion Devices



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Expansion Device

Dcondensercondenser C



A

pressure

pressure

enthalpyenthalpy




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Thermostatic Expansion Valve

thermostaticthermostaticexpansionexpansionvalve (TXV)valve (TXV)


liquid/vaporliquid/vapormixturemixture



A

ququ



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TXV Control




A

ququ



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TXV Control



liquidliquidrefrigerantrefrigerant


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Superheat

TXVTXV

85 psia, 41F85 psia, 41F[0.59 MPa, 5C][0.59 MPa, 5C]

liquidliquid


superheatedsuperheatedvaporvapor

290 psia, 109F290 psia, 109F[2 MPa, 42.8C][2 MPa, 42.8C]

A

re r geranre r geran


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Superheat

TXVTXV

85 psia, 41F85 psia, 41F[0.59 MPa, 5C][0.59 MPa, 5C]


49F49F[9.4C][9.4C]

79 psia79 psia[0.54 MPa][0.54 MPa]

290 psia, 109F290 psia, 109F[2 MPa, 42.8C][2 MPa, 42.8C]


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TXV Operation

evaporatorevaporatordiaphragmdiaphragm


external equalizerexternal equalizer

remoteremotebulbbulb

springspring

suctionsuctionlineline distributordistributor


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TXV Operation

springspring49F49F


valve diaphragmvalve diaphragm


valve pinvalve pinsuctionsuctionlineline



18 psi18 psi[0.13 MPa][0.13 MPa]


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Superheat Setting

Too little superheat:

Risk of damage to compressor by liquid refrigerant


oo muc super ea :

Reduction of system efficiency

Potential of coil frosting

Risk of compressor damage due to overheating


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Refrigeration

System Components

per o ve

Accessories



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Solenoid Valve



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Solenoid Valve

finnedfinned--tubetubeevaporatorevaporator



solenoidsolenoidvalvesvalves


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Solenoid Valve

liquid lineliquid line

condensercondenser

dischargedischargelineline


solenoidsolenoidvalvevalve


evaporatorevaporatorcompressorcompressor

suctionsuctionlineline


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Liquid-Line Filter Drier



solenoidsolenoidvalvevalve


liquidliquid--linelinefilter drierfilter drier



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Liquid-Line Filter Drier

replaceable

core type


sealed type

corecore


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Moisture-Indicating Sight Glass



sightsightglassglass expansionexpansion

valvevalve


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Suction Line Filter


suctionsuctionline filterline filter compressorcompressor

suctionsuctionlineline


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Suction Line Filterreplaceable

core type


sealed type


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Hot Gas Muffler

reciprocatingreciprocatingcompressorcompressor

dischargedischargelineline


hot gashot gasmufflermuffler

shellshell

perforated tubeperforated tube


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Shutoff Valve

shutoffshutoffvalvevalve


condensercondenser

shutoffshutoffvalvevalve


shutoffshutoffvalvesvalves





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Access Port

condensercondenser


liquid lineliquid lineaccess portaccess port

suction linesuction lineaccess portsaccess ports

compressorcompressorevaporatorevaporator


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Refrigeration

System Components

per o s x

Review



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ReviewPeriod One

Dcondensercondenser C



A

pressu

re

pressu

re

enthalpyenthalpy




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ReviewPeriod Twoevaporativecondenser


air-cooledcondenser

water-cooledcondenser


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ReviewPeriod Three

finned-tube

evaporator


shell-and-tubeevaporator


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ReviewPeriod Five

accessaccess

shutoffshutoff

valvevalve

condensercondenser


sightsightglassglass

solenoidsolenoidvalvevalve TXVTXV




suctionsuctionline filterline filter

Documents

Refrigeration System Component (3) [Compatibility Mode]