INDUSTRIAL COOLING
temperature process, 10-12% energy efficiency improvemen ts are typically achieved, with 3-5% for low temperature processes.
These improvements can equate to significant savings in energy costs over the lifetime of the equipment. It is therefore important to consider the Total Cost of Ownership or lifecycle running costs of the equipment including its ongoing energy and maintenance costs. Energy can consume 70-80% of the total carbon footprin t.
Alternative industrial refrigerants Ammonia is also being used as a low-GWP
alternative to HFCs in some industrial refrigeration applications.
Ammonia is a very efficient refrigerant but its toxicity and flammability restricts its use to a limited number of applications. It is only suitable for new installations/equipment rather than existing ones. The new equipment/installation itself tends to be high cost when compared to that r equired for HFC/HFO refrigerants, in part due to the additional safety measures required.
Hydrocarbons can be used in smaller equipment such as domestic refrigerators. However, they are highly flammable, which limits charge sizes and prevents replacement of HFCs in many industrial
(and commercial) refrigeration application s. The new g The new generation of refrigerants
The F-Gas Regulations in Europe have stimulated some key developments in technology by the industry to help prepare for the use of lower-GWP refrigerants. There are now solutions available that make the transition to lower-GWP easier without compromising on safety, efficiency or performance. This new generation of refrigerants overcomes many of the issues above. They are based on HFO (hydrofluoro-olefin) chemistry, which makes them much more sustainable. It’s also possible to use them to replace the most poten t HFCs.
Act now or face the risk
Users of R404A and other higher-GWP refrigerants need to urgently step up plans for converting to lower-GWP options. If they don’t, they may face rapidly increasing costs and the prospect of supply shortages.
The forthcoming ban on installation and
servicing of higher-GWP refrigerants and the steep reduction in quotas for placing on the market of R404A are together creating an unprecedented situation for the industry.
Although the commercial refrigeration industry
is already making great strides, the industrial sector appears to be moving too slowly. It has been reported that wholesalers have alerted their customers to price rises of 30-50% for HFC blends from April 2017. In addition, notices of upcoming price rises and accelerated phase-out of high- GWP products have been issued by refrigerant manufacturers as they adjust their stock levels to prepare for the next phase-down of HFCs.
Planning is key
W e need to start by ensuring that engineers and c ontractors are properly informed, educated and t rained. Although the new HFO blends are very s traightforward to use, they are new to many service personnel and it important that they all become familiar as such refrigerants will soon be the new industry standards in place of l egacy HFCs such as R404A. Change is always c hallenging and particularly at the pace driven by t he F-Gas phase-down, but users of industrial refrigeration equipment can mitigate the impact by ensuring they have a clear plan of replacement and by enlisting the help of contractors with the skills to work with the new refrigerants such as HFOs so that they can install, maintain and service the equipment over its lifetime.
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