ACR-OCT22-PG21.qxp_Layout 1 29/9/22 11:03 Page 1
SUPERMARKET REFRIGERATION
drawbacks do arise. For instance, increased operating costs occur due to reduced energy efficiency and increased system complexity. In cases, adding secondary refrigerants will increase the operating cost of the system due to the additional electrical usage. In terms of application, deep freeze food storage facilities and medical storage purposes require exceptionally low temperatures provided by the cascade refrigeration system.
A2L Refrigeration Systems With the cooling industry phasing down on the use of higher GWP refrigerants, non- toxic and mildly flammable A2L refrigerants are becoming an attractive replacement. The predominant benefit of A2Ls is the exceptionally low GWP level and are easy to use and offer performance and energy benefits against other architectures. This makes them perfect for refrigeration systems. On a commercial scale, A2L
refrigerants are already widely used, for instance, HFO-1234yf in car air-conditioning, R32 in comfort cooling as well as R454A, R454C & R455A in supermarket applications both large and convenience stores. Hubbard provides A2L solutions for supermarket retailers with a full range of convenience and large store packs as well as extending the range of blast chiller and freezers to be A2L ready.
While the risks of A2L
refrigeration systems are low, it is important to remember the systems classification. A2L represents low flammability, making these systems subject to extra safety consideration on the system design, installation, and maintenance. EN378 must be considered and will guide a contractor and end user on all considerations required for system design and implementation.
Propane Systems The largest attraction in commercial refrigeration to adopt a refrigeration system running on propane (R-290) is that R-290 has zero ozone depletion potential and a GWP of just three. Another selling point is R-290’s excellent thermodynamic properties, energy efficiency and reliability. As a natural gas, R290 is commercially available, and costs are significantly lower than synthetic refrigerants. However, rated through ASHRAE safety guidelines as an A3 refrigerant propane is highly flammable which raises safety concerns and brings tight regulations. Hence there is a trade-off between energy efficiency and flammability.
Conclusion Overall, there is a wide variety of refrigeration architectures on the market to match retailers differing needs. Current legislations focus on pushing the use of low GWP natural refrigerants such as CO2
. However, from an end
user’s perspective selecting a new refrigeration architecture based on the environmentally refrigerant is not the final stage. Instead, it is valuable to account for energy efficiency and system performance which also potentially have a greater effect on climate change than the GWP of the refrigerant itself. Importantly, energy efficiency will vary depending on the technology used, the system architecture, the climate where the system is located and electricity source that will vary from country to country. The aim at Hubbard is to help customers in their quest to select the perfect architecture based on the application and requirements. In some cases, retailers will request specific requirements, Hubbard products have the flexibility to build architectures based on customers unique demands.
Download the ACR News app today
OPEN DAY 10 am to 5pm
Thursday 6th Oct. CELEBRATING AD YEARS
With Exciting Product and Warranty Announcements. And Double Comfort Club Points for October to December 2022
For Further Information and to Register Your Interest visit
webstore.uk.fujitsu-general.com/fujitsu_open_day_registration
OPEN DAY @
FUJITSU GENERAL AIR CONDITIONING
Unit 150, Centennial Park Centennial Avenue, Elstree
Borehamwood, Herts, WD6 3SG Thursday 6th October 2022
www.acr-news.com • October 2022 21
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
