Possibilities for the Replacement of R12 in Domestic Equipment

Purdue University
Purdue e-Pubs
International Refrigeration and Air Conditioning
Conference
School of Mechanical Engineering
1988
Possibilities for the Replacement of R12 in
Domestic Equipment
L. J. M. Kuijpers
Philips Research Labs
J. A. de Witt
Philips Research Labs
M. J. P. Janssen
Philips Research Labs
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Kuijpers, L. J. M.; Witt, J. A. de; and Janssen, M. J. P., "Possibilities for the Replacement of R12 in Domestic Equipment" (1988).
International Refrigeration and Air Conditioning Conference. Paper 74.
http://docs.lib.purdue.edu/iracc/74
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IN DOMESTIC EQUIPMENT
POSSI BILIT IES FOR THE REPLACEMENT OF Rl2
L. J. M. Kuijp ers
J. A. de Wit
M. J. P. Janss en
PHILI PS Resea rch Labs
Eindh oven (NL)
Abstr act
appli ances no
For the replac emen t of Rl2 in dome stic s are avail able up to
erant
refrig
d
inate
chlor
fully
not
,
arable
comp
leVel s, press ure ratio s,
now. This provi ded aspec ts as press ure into accot int. The only
toxic ity and uninf lamm abilit y are taken
in the futur e is the
subst ance estim ated td be appli cable
d that toxic ity tests and
refrig erant 134a. Howe ver, it is state inves tigati ons. High
possi ble ways for produ ction need more
be consi dered for
press ure refrig erant s, as e.g. R22, may requi re a redes ign df
appli catio n but in many cases it wouldlary tube chara cteri stics might
comp ressor and heat excha ngers ; capil
This apart from the fact
be proh ibitiv e for the R22 appli catio n.
from an envir onme ntal
table
accep
be
would
wheth er the use of R22
e.
futur
point of view in the
be non-t oxic but on the
HoweV er, if the refrig erant shoul d
namel y, it conce rns a
ted
accep
is
lity
mabi
inflam
other hand
broad er range of subst ances
hat
somew
a
system
d
seale
lly
herm etica
d therm odyna mic prope rties
perio
1940
1920the
In
.
cable
appli
may be
) and isdbu tane {R6d0 a)
(R290
ne
propa
),
(Rl70
e
ethan
like
of gases
to a limit ed exten t.
used
been
have
they
and
ined
determ
were
on a refrig erati ng
tn this paper exper iment s are descr ibed
the cycle . Press ure level s,
appli ance using the two latte r gases in
value s are consi dered and
capil lary optim izatio n and effic iency use of Rl2.
compa ted to value s obtai ned with the
ment in the discu ssion
The aim of the paper is to be an instru
as an appro priate
used
be
could
s
erant
wheth er inflam mable refrig
ment.
equip
on
erati
refrig
etic
herm
,
replac emen t in small
mabi lity, Dome stic
Keyw ords: Alter nativ e Refri geran ts, n Inflam
izatio
optim
lary
capil
ion,
Refri gerat
LE MATERIEL MENAGER.
POSSIBILITES DE REMPLACEMENT DU Rl? DANS
les appar eils menag ers on ne
RESUME : Pour rerop lacer le Rl2 dans
e comp arable aux frigo rigen es
fluid
de
enant
roaint
dispo se pas jusqu 'a
compt e des press ions, des taux
tenir
faut
Il
es.
chlor
non entier eroen t
flamm abilit e. La seule
l'inin
de
et
ite
toxic
la
de
n,
de comp ressio
nir est le Rl34a . Cepen l'ave
a
cable
appli
e
estim
l'on
que
subst ance
les moyen s possi bles de
et
ite
toxic
de
s
essai
les
que
pense
dant, on
L'app licati on de frigo .
rches
reche
de
plus
t
siten
neces
produ ction
ion, tels, par exerop le, le R22,
rigen es fonct ionna nt a plus haute press eux cas il faudr ait une
nornbr
de
dans
roais
agee,
envis
etre
peut
des echan geurs de chale ur ; les
nouve lle concept~on du comp resseu r etpourr aient etre prohi bitiv es pour
carac terist iques du tube capil laire si !'util isati on du R22 sera
le R22, en dehor s du fait de savoi r
de l'envi ronne ment.
accep table a l'ave nir du point de vue
etre toxlq ue mais qu'en
Cepen dant 1 Sl le frigo rigen e dolt ne pas .culie r cela conce rne
en parti
revan che on accep te l'infl amm abllit e - peu plus etend u; ~e subun
les system es herrn etique s - une gamme et
1940 les propr letes therm otance s peut etre reten ue. Entre 1920
), le propa ne (R290 ) et
dynam iques de gaz tels que l'etha ne (Rl70
226
l'lQobutane (R600a) ont ete deterrninees et ces gaz ont
un degr6 limlt~.
~
et~
utilises
Cette communication decrit des experlences sur un appareil friutilisant les deux dernieres substances. Les niveaux de
presslon, l'optimisation du capillaire et les rendements sont consideres et compares aux valeurs obtenues avec l'utilisation du Rl2.
gorif~que
L'objectif de ce rapport est de servir a l'examen des frlgorigenes inflammables et de leur utilisation comme frigorigene approprie de rernplacernent dans les petits materiels frigorifiques herrnetiques.
This paper appears in the July 1988 issue of the IJR
on page 284.
227