The Split ACRefrigeration Cycle

3 C LIQUID

EVAPORATOREVAPORATOR

ROOM OUTSIDE

SUNSUN

30 C35 C

3 C LIQUID

EVAPORATOREVAPORATOR

BTUs

SUNSUN

ROOM OUTSIDE

30 C35 C

Evaporator Coil Absorbing the Cooling Load

3 C LIQUID

10 C GAS

EVAPORATOREVAPORATOR

SUNSUN

ROOM OUTSIDE

25 C

35 C30 C

Evaporator Coil Boils the Liquid

3 C LIQUID

10 C GAS

COMPRESSORCOMPRESSOR

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

3 C LIQUID

10 C GAS

COMPRESSORCOMPRESSOR

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

10 C GAS

3 C LIQUID

50 C GAS

COMPRESSORCOMPRESSOR

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

3 C LIQUID

10 C GAS 50 C GAS

CONDENSERCONDENSER

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

3 C LIQUID

10 C GAS 50 C GAS

CONDENSERCONDENSER

BTUs

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

Compressor

Dis

char

ge L

ine

3 C LIQUID

10 C GAS 50 C GAS

38 C LIQUID

CONDENSERCONDENSER

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

35.5 C

38 C LIQUID

50 C GAS

3 C LIQUID

10 C GAS

Capillary TubeCapillary Tube

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

35.5 C

Capillary Tube Strainer

Refrigerant Flow

Expansion Devise

38 C LIQUID 3 C LIQUID

10 C GAS 50 C GAS

Capillary TubeCapillary Tube

SUNSUN

ROOM OUTSIDE

30 C35 C

25 C

35.5 C

Strainer

Accumulator

EVAPORATORCONDENSER

SUNSUNMINIMINI--SPLIT SYSTEM, SPLIT SYSTEM, panaspanas dingindingin

HOTREFRIGERANT

Capillary Tube

COMPRESSOR

EVAPORATORCONDENSER

SUNSUNMINIMINI--SPLIT SYSTEM, SPLIT SYSTEM, dingindingin -- dingindingin

COLDREFRIGERANT

CapillaryTube

COMPRESSOR

WALL

Remote Control

EVAPORATORUNIT

CONDENSINGUNIT

A B

pres

sure

pres

sure

enthalpyenthalpy

evaporatevaporatoror

Refrigeration CycleVapor-compression refrigeration cycleVapor-compression refrigeration cycle

PSIA

PSIA

Heat content: sensible + latent , btu/lbHeat content: sensible + latent , btu/lb

A

C

compresscompressororp

ress

ure

pres

sure

enthalpyenthalpy

evaporatevaporatoror

B

superheatedsuperheated

Refrigeration Cycle

A

condenscondenserer

pres

sure

pres

sure

enthalpyenthalpy

evaporatevaporatoror

B

C

compresscompressoror

D

desuperheatdesuperheatsubcooledsubcooled

Refrigeration Cycle

expansiexpansionon

devicedevice

A

D condenscondenserer

pres

sure

pres

sure

enthalpyenthalpy

evaporatevaporatoror

B

C

compresscompressororBoil off, flashBoil off, flash

Refrigeration Cycle

0,001

0,01

0,1

1

10

100

1000

100 1000 10000

SuperheatedVapor C

ompr

esso

r

CapillaryTube

Satu

rate

d L

iqui

dA

BDC

E

FG

Enthalpy

Pres

sure

+

+

Condenser

Evaporator

BCDE

HP

LP

F G

A

C

B

D

F

E

G

A

COMPRESSORDISCHARGE

DESUPERHEAT

CONDENSATION

SUBCOOLING

PRESSURE DROP(TEV)

EVAPORATION

SUPERHEAT

SEQUENCE OF EVENTS

ASa

tura

ted

Vap

or

Skeleton Mollier Chart Showing Vapor Compression Refrigeration Cycle

Refrigeration Effect

SubcooledLiquid

Total Heat Rejection

B

SPLIT AC SYSTEM COMPONENTS

Compression Lift

MixtureRegion

2 - Stage Centrifugal Chiller

11

2233

4466

77

Pre

ssur

e,

Pre

ssur

e, p

sia

psia

Enthalpy, Enthalpy, btubtu/lb/lb

evaporatevaporatoror

condenscondenserer

22--stage stage compresscompressoror

expansioexpansion devicesn devices

88

99PPee

PPcc

PP11

55economizeeconomizerr

A

The Split ACRefrigeration Cycle

Thank You

Condenser Unit

Suction Line