SUPERMARKET REFRIGERATION
The energy efficiency challenge
J&E Hall product UK sales manager Paul McDermott sets out what you need to know before choosing commercial condensing units for supermarkets and convenience stores and talks about the J&E Hall range of solutions.
T
he pressure on supermarkets and installers to think and act smart on energy efficiency has never been greater. Customers are leading the call for greener and more sustainable ways to store, present and sell refrigerated products.
Energy bills continue to rise but running costs still have to be competitive. To paraphrase a well-known slogan from a large supermarket, “every little does help”. The entire process of refrigeration is being examined in detail by retailers as they look to pass on savings to the customer and keep down production costs.
Whether it is an out of town superstore, a convenience store or a farm shop, the efficiency of the refrigeration system will have a significant influence on the bottom line. Working at the sharp end with installers, specifiers and end users, J&E Hall understands the pressures facing the retail food market.
Outdoors condensing units play a key role in keeping products in perfect condition for the customer. Stores are more and more opting for refrigerated cabinets with doors and this requires the condensing units to have greater flexibility on load matching.
Refrigeration load can vary considerably during a 24-hour period in a store. Customers opening and closing cabinet doors have a significant effect on the cooling demand of the system. Having the ability to vary the load can make a real difference to the efficiency of the refrigeration system. Old on-off technology cannot efficiently match varying load demand, so the use of digital varying output compressors is an ideal solution.
The J&E Hall range of digital single and twin Fusion Scroll Commercial Condensing units gives customers the benefits of load matching and allows them to make significant savings in energy consumption. Refrigeration load is precisely matched by advanced electronic control of the digital compressor
36 October 2018
which can deliver variable capacity from 10% to 100%. This makes a huge difference to your outgoings if you are running a convenience store chain of 100+ units, or managing out of town stores. Digital units are all-in-one packaged units with multiple cabinets and evaporators. This makes them ideal for convenience stores and supermarkets.
There is also greater demand from customers and end users for physically smaller units as space and access can be restricted. J&E Hall’s newly-redesigned 12hp digital twin unit has a 20% smaller footprint than the former version which makes it easier to transport and install.
Ease of access to major components via hinged doors for installation and servicing is a must for the contractor and this is a benefit we have included in all ranges of our condensing units. Our digital units also feature a pre-wired control panel with mains isolator, compressor ball valves, externally mounted service valves and status lights. Noise from refrigeration systems can be an issue in residential areas. All J&E Hall condensing units, including our digital versions, have low-speed fans with speed control for quiet operation and are acoustically lined. Refrigerants-wise, our digital units can operate on R404A, R407A, R407F and low global warming potential (GWP) alternatives R448A and R449A.
The J&E Hall digital range is Eco-design compliant – a European regulation that sets minimum standards for energy efficiency. Equipment which complies with this regulation and achieves significant reductions in energy use is clearly going to find favour with the end user. Our digital unit range is continually updated to meet the changing needs of the store sector. More new digital units will be released in the next few months. End users are looking for greater energy savings as well as moving towards refrigerants with a low GWP, and this means that the advance of more sustainable systems in both aspects is gathering pace.
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