REFRIGERANTS would be a 19% cut in CO2 emissions – around
800 million tonnes – by 2030. As a single component refrigerant, R32 is also easier to recycle and reuse, which is another environmental factor in its favour. For some time, however, R32 was considered a diffi cult refrigerant to work with and there had been several failed attempts to harness its potential. At Daikin Applied we were able to combine our expertise as both manufacturer of air conditioning equipment and refrigerant gas to make the breakthrough and in 2012 Daikin was the fi rst company in the world to introduce R32 into split air conditioners. It has since gone on to add R32 enabled commercial air conditioners and heat pumps. In 2018, Daikin Applied became the fi rst
manufacturer to successfully apply R32 in air conditioning chillers – introducing a new generation of air-cooled scroll products. This pioneering work will have exciting long-term benefi ts for the industry as a whole and for its growing number of customers around the world. The use of R32 means chillers can achieve a seasonal energy effi ciency ratio (SEER) that is 10% better than earlier models using R410A, for example, and with a GWP of just 675. R32
refrigerant is an A2L class refrigerant, which means it has low fl ammability making it safe for use in many applications including chilled water systems.
The fact that it is a single component refrigerant (not a blend) and, therefore, easier to recycle and reuse during maintenance, for example, is also an important aspect of the wider push towards carbon neutrality by 2050. That goal will not be possible unless more end users reclaim and reuse more of the refrigerant gas we provide.
To this end, Daikin Applied has launched
a new Portable Refrigerant Recycling unit (RRDQ), which can be connected directly to the installed equipment. After connecting the refrigerant recovery bottle, the recovery and recycling process is automatic as we recognise that making this process as easy as possible will be the key to its success. The International Energy Agency (IEA) reported that it should be possible to keep building energy use at today’s level until 2040 worldwide despite a predicted 60% increase in new construction and a likely doubling of air conditioning capacity – if we make best use of all the best technological options already
available to us. Innovations like R32 are also increasingly in
reducing direct emissions – not just those from power generation. In the event of any leakage of refrigerant gas to the atmosphere, a system with a 63% lower CO2
equivalent than its
predecessors can make a huge diff erence to an end user’s environmental footprint. Chiller technology is evolving fast to meet the industry’s emissions and energy effi ciency obligations – not just because of F-Gas and the Ecodesign regulations – but because we want to give end users the best possible performance.
A good example of how this improvement can be deployed is in Daikin Applied’s new R32 Mini Chiller, which complements the company’s popular Bluevolution series and means we have an option using R32 for all applications including the growing residential market for comfort cooling and heating, which this new range satisfi es. We will need more of this kind of technical
innovation to improve energy and carbon performance, meet regulatory restrictions and contribute to the Prime Minister’s new ambitious, but highly laudable, target.
Fieldpiece
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www.acr-news.com July 2021 15
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