search.noResults

search.searching

dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
ALL THINGS GREEN


When end users think of going green, they must also consider the financial viability and sustainability of new or upgraded refrigeration systems – not only their first and installed costs, but also their long-term maintenance and serviceability requirements as well. Manufacturers of these new equipment and component options are tasked with utilising lower GWP refrigerants that meet regulatory targets, while minimising ownership and operating costs.


Regulatory drivers


Behind the transition toward more environmentally friendly refrigeration, you will also find a dynamic mix of global, federal and regional regulations. As our industry continues to seek clarity on the Environmental Protection Agency’s (EPA) stance on high GWP HFCs, the current status is that R22 is intended to be phased out under the Clean Air Act (CAA) due to its ODP.


Under the Montreal Protocol and the CAA, R22 can no longer be manufactured or imported into the US from 01 January 2020. It may come as a surprise to learn that there are still many owners and operators of older supermarket refrigeration systems that are currently charged with R22. These owners will likely pursue necessary system retrofits in advance of the R22 phase-out deadline – or attempt to capture and reuse R22 until they have exhausted their supplies. Meanwhile, the California Air Resources Board (CARB) has wholly adopted the framework of the EPA’s Significant New Alternatives Policy (SNAP) Rules 20 and 21. This means that R404A and R507A are currently not allowed in many new commercial refrigeration applications, presenting many California operators with a similar challenge to those transitioning away from R22.


There is no question that this regulatory climate may be difficult to navigate, but it is


important to remember that the imperative to transition to environmentally friendly refrigeration systems is widely accepted. While there has been relatively limited adoption in the US as a whole, those affected by R22’s phase-out and the CARB regulations are accelerating this transition.


Elsewhere in the country, more sustainably minded retailers are in various stages of discovery of emerging lower GWP refrigerant options.


Lower GWP refrigeration options


For several reasons, many retailers are actively exploring more environmentally friendly refrigeration alternatives. Whether you are upgrading an existing system with a lower GWP refrigerant, exploring an entirely new system architecture as a replacement, or installing a greenfield system, there is an ever-expanding variety of options that utilise hydrofluoroolefins (HFOs), HFO/HFC blends and natural refrigerants.


There are relatively minimal retrofit requirements when moving from R22 or R404A to R448A/R449A (A1 HFC/HFO blends). The change in refrigerant alone greatly reduces an operator’s carbon footprint but may also require additional compressor cooling and other minor system changes. These changes, combined with energy optimisation best practices, help operators to reduce indirect emissions, which can lower their carbon footprint and help them meet their sustainability goals.


For greenfield locations or a complete system overhaul at an existing site, operators may consider one of many emerging lower GWP options, including: ■ Low-charge ammonia chillers on the roof ■ A2L (mildly flammable) blends in chillers on the roof and machine rooms


■ Distributed, small-charge systems with both A1 and A2L refrigerants


■ R290 integrated cases outfitted with micro- distributed systems


■ CO transcritical and/or cascade systems using CO2


2


for low temperatures, and a HFO (or lower-GWP HFC) for medium temperatures.


In smaller stores that do not need large, centralised refrigeration systems, more refrigeration equipment choices are available. These systems utilise spot merchandisers and distributed architectures that are smaller, easier to install, and offer added flexibility. And if the prospect of replacing an existing system with a complete overhaul causes trepidation, there have been instances where new systems were installed in parallel with an existing system. In these situations, the old system remains active as the new system gets slowly phased in, allowing an operator to validate performance and gradually make the transition.


Building a sustainable future At Emerson, we don’t think there is any question that sustainable refrigeration will soon become more commonplace. Like the ban on ozone-depleting substances, the global reduction of fluorinated gases is being driven by the Kigali Amendment to the Montreal Protocol, which is now ratified by more than 65 countries. As federal regulations once again take shape and regional mandates become more commonplace in the US, it seems inevitable that the industry will eventually make the transition to lower GWP systems. As refrigerant changes continue to drive the transition to new, environmentally friendly equipment over the coming years, our industry must continue to share its experiences with these systems. Those operators who are taking proactive steps now will have a head start on this transition and will provide the insights from which we can all learn.


Hawco


GET MORE NTS


SPECIAL SUMMER DISCOU L SUMMER


www.acr-news.com OFFER ENDS 31/08


£50


OFF EVERY RESIDENTIAL A/C SYSTEM


Giving You Even Better Value


Call 01483 869 070 for a quote For details, visit www.hawco.co.uk/hitachi


July 2019 41


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56