REFRIGERANTS Table


supermarket applications, cold storage and we have seen the use of A2L refrigerants in refrigerants as they roll out approvals and builder are now more comfortable with A2L Compressor manufacturers and equipment


refrigerants along with their properties. In table 1 is a list by application of A2L food production areas.


What is hold


ing back the use of A2Ls? By their very nature they are not retrofit


The roll out has been slow because engineers their use is expected to grow significantly. These approvals are now coming through and manufacturers test and approve their use. much slower, as compressor and equipment the speed at which they come to market is options but for new equipment, therefore


and understand how to handle flammable need to be trained to safely work with


refrigerants.


Like other new refrigerants in the past in concerns are soon overcome as experience


ast, initial


flammable refrigerants and the additional risk of guidance from trade bodies on handling and knowledge is gained. There is plenty


circumstances that will allow the safe use of can be achieve with additional mitigating and application areas, along with what size requirements for different locations refrigerants and provides guidance on charge EN378 was updated in 2016 to include A2L by standards, which are again shown in table 1. The use of such refrigerants is also covered assessment required.


larger charge sizes. Refrigerant Training Anyone working with refrigerants, whether


their characteristics; whether it be pressure, their safe handling and have knowledge of Hydrocarbons must be properly trained in they are HFCs, HFOs, CO2, Ammonia, or


Riisk Assessment Risk Assessment


Those who handle Ammonia will already be risk need to be considered and actions required. for flammable refrigerants as the additional assessment on their use and this is n have carried out and documented a risk Anyone handling current refrigerants


s should


no different risk


ns required. ditional


eady be


that risks can be fully evaluated and avoided in Ignition Energy (MIE) and burning velocity, so Flammability Limits (LFLs and UFLs), Minimum need to be considered such as Lower an Each refrigerant has different prop installers, and service companies. different for equipment manufacturer, refrigerant and its properties and will be associated risk will vary dependent o When handling any refrigerant, the websites and trade associations. assessment is available from Governmen Again, guidance on DSEAR and risk familiar with the requirements.


ment k


on the e


ll be er,


avoided in elocity, so , Minimum and Upper perties that


potential leak scenarios.


co re on to


wh th is


hem to work safely and avoid ignition sources common sense and best practice to enable onsiderations for their own safety. Most of it frigerants need to be trained in the additional nly have experience with non-flammable oxicity or flammability. Engineers who


here they are working. What are the benefits of A2L refrig


Coupled with their lower flammability levels give very similar performan applications as curren to be able to be used in blends is that they have been One of the ben


they are relatively easy to adap experience of these n


benefits of A2L refrigerants? efits of the A2L refrigerants they have been formulated e used in many of the same current HFC refrigerants and ar performance characteristics. heir lower flammability levels vely easy to adapt to. As hese new fluids is growing


there are a number of studies that are being


refrigerants are also more energy efficient than published that show that these new A2L


debate as we move to a carbon neutral position. going to be a key topic in the climate change total electricity demand, energy efficiency is equipment attributed to consuming 17% of With refrigeration and air conditioning the other Low GWP technologies.


Current A2L refrigerants that are readily


The next Quota cut is less than 12 months available are listed in Table 2.


away and with the UK operating its own UK


part to play as a solution to meeting these therefore A2L refrigerants will have a very big what happened in late 2017 and early 2018, being inextricably linked. We all want to avoid refrigerants in 2021, with price and availability have a greater impact on the higher GWP F-Gas quota system from 2021, this could


legislation goals. e 2


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