clasSMAte
Date
Page
Recigerotion-It ts defined as a
methocl
temperature oa
temperature
oredt the
maintarns L A3tembelow that thesut
ot the e the sutroundung
roundings and
-ing the heat from
lowerTemperature
termper ature by
by coptinuously aLbstract
t continuousy
Principle of Refrigerahion
Principle o etrgeroti on _norks on the
thermodynamics Lwbich $tates that the second t a
rom louwer heat does net lou
temperature el
bodu without the aud the body to the higher temperature
e external work
Jheretore in a
te remove dhe he at refrigerator,_Power 4 t& be ppuea
Cabinate te keep tcoocontinuously._prom the setrigerator
at a temberature Less than
otmospher:'c temperature. the
Ketrigerant E a medium in a
relrigetator uwhichb continuo
-ugly extracts the heat from the stace uithin the rekrigerator
whreh to be kept Cool at temberatures less than the attmosphe
-re and nay rejeets te t .
Ex Hmmonia , Car bon diozide Sulphur dioxide,JaRon
,
meth chloricle etc.
Commonly used Refrigerants are
CAmmonia
Ammonia as a retrigerant i_ eoployed n relrigerators operating
0othe_absorption printibles
ting
tiwidely used in incustres for cold storage pur pose, for
ce making plats etc.
It toic, Lammable, irratating and ood destaroying. properties
makes it unsuitable for domestie Yefregetators.
, Date
Page
Carbon dioxide -
Sefrigerants
tote _ea ads
are Ltdely uISecL
ication t\
matine_applir.
-Jhe egtcicocy the refrigenators usng C02 a s tel.
lriger and
sloo So,t i_ hardly ugeal in domesic
retiqerators
J t is used in day tce makinq pla DTS
Jt ts colourless, edourless non-tozi C, Non- jlammable on
non- CO 5OStve.
Sulphur dioxu'de -
In eanier days, S0, wwas commony used refrigerants in
domesticretriqerators
t_poss ess better thermo oynamicproperties, t has low
rerigeroting elect and Aigb sbeciie valume. Jheretore lorge
Capai.t big.h speed Combresors ase_requured.
Ittend_ te Combine with water and forms 3ulBhuss and
Auphusic acias that wiu Corrode the meta llic poarts e th2
etige6ation 3yste m.
ethy! chloride -
Jt a s used earliers in domestic and Amall scale industL
retrqerato Bioce Lt wiL busn under So me conditions a
S2bty toic, nst generaty used
, elassMAte
Date
Page
Freon12
It tis
widely used in
domestc refrigeration
eration
It s YsT em
Colourlesa, odour
noh -
explosive and non- lessnon-foxic,N
COsrosive.
cortosive
noh-
inlammabl
1tS UJed in dom estic
vabour combregsion
retrigerafolsS
Ereon-92-
t is wtdely used in sir- Con
dition ingAytem
Jtts alse
Colouressodousless, non-toxic 9 0-n Lammable,-
000-eXplosive Qnd non -Co rrostve
But Freon cerdqerants posing,
amajor threat
environment through their rele in the destructionto the global
OZone loyer the
Kefriqerator - J ds_a machine by means wh ich celd can be
produced
Parts of a Refrigerator
EVAPORATOR
COMPRESSOR EX PANSloN VALVE
CONDENSER F
Date
Page
Recigerotion-It ts defined as a
methocl
temperature oa
temperature
oredt the
maintarns L A3tembelow that thesut
ot the e the sutroundung
roundings and
-ing the heat from
lowerTemperature
termper ature by
by coptinuously aLbstract
t continuousy
Principle of Refrigerahion
Principle o etrgeroti on _norks on the
thermodynamics Lwbich $tates that the second t a
rom louwer heat does net lou
temperature el
bodu without the aud the body to the higher temperature
e external work
Jheretore in a
te remove dhe he at refrigerator,_Power 4 t& be ppuea
Cabinate te keep tcoocontinuously._prom the setrigerator
at a temberature Less than
otmospher:'c temperature. the
Ketrigerant E a medium in a
relrigetator uwhichb continuo
-ugly extracts the heat from the stace uithin the rekrigerator
whreh to be kept Cool at temberatures less than the attmosphe
-re and nay rejeets te t .
Ex Hmmonia , Car bon diozide Sulphur dioxide,JaRon
,
meth chloricle etc.
Commonly used Refrigerants are
CAmmonia
Ammonia as a retrigerant i_ eoployed n relrigerators operating
0othe_absorption printibles
ting
tiwidely used in incustres for cold storage pur pose, for
ce making plats etc.
It toic, Lammable, irratating and ood destaroying. properties
makes it unsuitable for domestie Yefregetators.
, Date
Page
Carbon dioxide -
Sefrigerants
tote _ea ads
are Ltdely uISecL
ication t\
matine_applir.
-Jhe egtcicocy the refrigenators usng C02 a s tel.
lriger and
sloo So,t i_ hardly ugeal in domesic
retiqerators
J t is used in day tce makinq pla DTS
Jt ts colourless, edourless non-tozi C, Non- jlammable on
non- CO 5OStve.
Sulphur dioxu'de -
In eanier days, S0, wwas commony used refrigerants in
domesticretriqerators
t_poss ess better thermo oynamicproperties, t has low
rerigeroting elect and Aigb sbeciie valume. Jheretore lorge
Capai.t big.h speed Combresors ase_requured.
Ittend_ te Combine with water and forms 3ulBhuss and
Auphusic acias that wiu Corrode the meta llic poarts e th2
etige6ation 3yste m.
ethy! chloride -
Jt a s used earliers in domestic and Amall scale industL
retrqerato Bioce Lt wiL busn under So me conditions a
S2bty toic, nst generaty used
, elassMAte
Date
Page
Freon12
It tis
widely used in
domestc refrigeration
eration
It s YsT em
Colourlesa, odour
noh -
explosive and non- lessnon-foxic,N
COsrosive.
cortosive
noh-
inlammabl
1tS UJed in dom estic
vabour combregsion
retrigerafolsS
Ereon-92-
t is wtdely used in sir- Con
dition ingAytem
Jtts alse
Colouressodousless, non-toxic 9 0-n Lammable,-
000-eXplosive Qnd non -Co rrostve
But Freon cerdqerants posing,
amajor threat
environment through their rele in the destructionto the global
OZone loyer the
Kefriqerator - J ds_a machine by means wh ich celd can be
produced
Parts of a Refrigerator
EVAPORATOR
COMPRESSOR EX PANSloN VALVE
CONDENSER F
