EVENTS AND EXHIBITIONS
INCORPORATING COLD CHAIN
regulations imposed to control the usage
of each.
Since the second F-Gas regulations of
the EU in 2014, and the Kigali Agreement
in 2016 to phase down HFCs, what were
commonly used refrigerants, for example
R404A and R22, are now something of
the past in Europe because of their high
GWP. “If one compares the emission
of greenhouse gases of the new Focus
diesel car with that of R404A, the Focus
D would need to travel 40 020km to
emit the same greenhouse gas (GHG)
as only 1kg of R404A,” explained
Fuhrer. He went on referring to the
many substitutes (Table A) available as
alternatives to R404A, R134a, and R410A.
Fuhrer emphasised that in selecting
any alternative, one has to consider
its characteristics and performance/
operating data. For each alternative,
Bitzer offers a range of compressors
and the corresponding program for the
selection to gain optimum performance
for the required duty.
Natural refrigerants, in particular
ammonia (R717) with a GWP = 0 and CO 2
(R744) with a GWP = 1, have gained much
wider usage in industrial and commercial
refrigeration as well as process cooling.
During the past 15 years, CO 2 has slowly
developed from a niche application to
Tracy Katsande (Metraclark, Botswana) in centre, surrounded by Bitzer dealers from
across southern Africa, with John Buckland (far left) of Metraclark, Export Department,
Johannesburg.
Table A: Alternatives to HFCs for low GWP.
Alternatives to HFCs for low GWP
R404A
R449A
R134a R410A
R450A R32
R448A
R513A
R452A
R455A
R452B
R1234yf
R407H
R407F
R454C
R457A
R290
20
R454B
R1234ze
After a busy two days, there was time to enjoy a farewell drink.
www.coldlinkafrica.co.za
COLD LINK AFRICA • May 2019