REFRIGERANTS
has been recycled or reclaimed from the same type of system – stationary refrigeration, air conditioning or heat pump equipment under the scope of the F-gas Regulation. In the same way that recycled R22 was used to see people through the initial period following the ban of HCFCs, recycled or reclaimed R404A will be essential if contractors are to mitigate the effect of the huge price rises currently occurring every few weeks. However, it is essential that contractors
observe best practices when recovering gases if they intend to use them for servicing after 2020, when the ban comes in for using virgin gases with a GW P above 2,500.
REFCOM registered companies will have seen the recently published Technical Bulletin (TB023) on the subject of refrigerant recovery, which explains the difference between reclaimed and recycled gases, and recovery.
In a nutshell, recycled gas has had a very basic cleaning process applied to the recovered gas to remove non -condensables, oil, water vapour and particulate matter. Meanwhile, reclaimed gas has been reprocessed to ensure the equivalent performance of a virgin gas. Reclaim is generally carried out by gas manufacturers whereas contractors can, if recovery is carried out
properly, recycle themselves by using filters and driers.
This process becomes crucial to pay attention to when you are recovering blend gases like R404A as the constituen t gases may not be in their intended blend after recovery, especially after a leak.
The wider the glide of the zeotropic blend, t he greater the danger of not recovering in the
correct constituent blend. The effect of this, of course, is that the gas will not perform as expected, may have serious effects on efficiency and can even create a safety issue in extreme cases.
As always, the REFCOM and BESA technical helplines are there for members concerned with issues like this to receive advice and guidan ce.
www.refcom.org.uk
www.thebesa.com
RS-50 Global Warming Potentials
4500 4000 3500 3000 2500 2000 1500 1000
4500 4000 3500 3000 2500 2000 1500 1000 500 0
R507R507 R404A R404A R407A R407A RSL R442AR442A from
REFRIGERANT SOLUTIONS LIMITED The Refrigerant Specialists
37
• Low global warming replacement for R404A and R507
• Higher efficiencies producing energy savings
• Suitable for use in new & existing equipment with little change
• Non ozone depleting replacement for R22 in refrigeration
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