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Workshop onLow GWP Alternative Refrigerants

26thJanuary 2016

Session

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Session !ourSession Start Finish

"ntro#u$tions %&00 %&1'(a$kgroun# ) *ontreal Proto$ol an# +,!, phase

out it *ol#ova%&1' %&-0

.utline of the workshop an# (rief /A session %&-0 10&-0

"nitial Assessent uestionnaire 10&-0 11&00

Break 11:00 11:15

"ntro#u$tion to Alternative Refrigerants ) safety3

e4$ien$y3 relia5ility an# goo# pra$ti$e11&1' 1-&1'

Lunch 13:15 14:00

Syste #esign using alternative refrigerants an#

ewi Analysis1&00 1'&00

,ontainent an# leak #ete$tion of alternative

refrigerants 1'&00 16&00

Break 16:00 16:15

Maintenance and repair of alternative

refrigerant sste!s16:15 1":15

Retro7tting e8isting systes with low GWP

alternatives19&1' 19&'

!inish 19&' 19&'

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*aintenan$e Repair of AlternativeRefrigerant Systes

(efore attepting any aintenan$e or repair&

"t is re$oen#e# that te$hni$ians have an

in#ivi#ual ! Gas $erti7$ate :or euivalent; to#eonstrate $opeten$e in han#lingtra#itional refrigerants3 an# un#ergoa##itional training on the spe$i7$ alternative

refrigerant< #ll $echnicians should have in depth

training %efore &orking &ith alternativerefrigerants

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Safety ) Rein#er

'efrigerant

(nhalation

Fla!!a%ilit

)ressure

*ther +a,ards

'"44Lowto8i$ity

=on>aa5le

Muchhigher

)ressure rise of trappedli-uid high and risk oftrapping cold li-uid high.)ossi%ilit of solid '"44for!ation.

'"1" +ighlto/ic

Low>aa5le

Lower

'3Asphy8iant

Low>aa5le

+igherPro#u$ts of #e$opositionhighly to8i$

'134,eAsphy8iant

Low>aa5le

LowerPro#u$ts of #e$opositionhighly to8i$

'600a Asphy8iant

+ighla!!a%le

*u$hlower

'20Asphy8iant

+ighla!!a%le

Siilar

'1"0

Asphy8ian

t

+ighl

a!!a%le Siilar

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*ain Servi$e Pro$e#ure ?i@eren$es'efriger

antWork Area uipent Leak esting ,harging

Re$overy B?isposal

'"44Cery wellventilate#

Suita5le forvery highpressure

*etho#ust 5esensitive toR9

"nitial$hargeshoul# 5egas toprevent #ryi$eforation

Centing isusualpra$ti$e

'"1"

Cery wellventilate#an# freefrosour$es ofignition

Suita5le foruse withR919 an#free frosour$es ofignition

*etho#ust 5esensitive toR919

'3

Suita5le forhigh

pressurean# freefrosour$es ofignition

*etho#ust 5esensitive toR-2

'134,e

!ree fro

*etho#ust 5esensitive toR12-De

'600a SallE

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!laa5le Refrigerants

When you work with >aa5le refrigerants the area ust&

(e well ventilate#

+ave no sour$e of ignition within - :a typi$al safe area when working on

>aa5le refrigerant systes;aa5le refrigerant levels

an# alars at 20F of the lower >aa5ility level< he photo showssuita5le #ete$tors for +,saa5lerefrigerant if the on B o@ swit$h is not use#&

*ove the swit$h to the on position an# plugthe pup into a so$ket outsi#e the -

Done an# $ontrol it fro this so$ket< Lo$ate the va$uu pup in a wellI

ventilate# area or outsi#eaa5le refrigerant#ete$toraa5ility

Goo#

.#our an# #ete$tion

euipent availa5le

'31Mediu!*e#iu to high operating pressure

se# in A, systes3 5ut usually with

5raDe# $onne$tions

*il# >aa5ility?ete$tion euipent

5e$oing availa5le

'134,e

Mediu!

*e#iu to low operating

pressures

se# in $hiller type

systes with iniu

oints

*il# >aa5ility?ete$tion euipent

5e$oing availa5le

'600a

'20

'1"0

Lo&

*e#iu to low operating Pressures se#

in systes with low $harge in line with

reuireents for A- refrigerants

+igh >aa5ility?ete$tion euipent

availa5le

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Potential Leak Points

Potential leak points on systes operating with

alternative refrigerants are siilar to those on

$onventional systesuorinate# gases :! Gases; H thisin$lu#es R-2 an# R12-De