FEATURE REPORT PRODUCT NEWS
Daikin Applied
Daikin Applied UK has launched a polyvalent unit capable of delivering simultaneous cooling and heating in commercial and industrial applications.
Polyvalent, or hybrid heat pump, systems are proving increasingly popular because of their ability to cope with complex building requirements in a wide range of climatic conditions while also minimising environmental impact. Daikin’s multipurpose four-pipe EWYS-4Z
employs inverter-driven single-screw compressors and operates with the low global warming potential (GWP) refrigerant R-513A. Its performance is also boosted by highly energy effi cient variable frequency drive (VFD) and variable volume ratio (VVR) features. The polyvalent units deliver capacities from 400 to 800 kW in cooling and heating mode with a total energy effi ciency ratio (TER) as high as 8.00. They operate in outdoor temperatures from -18°C to +50°C and provide chilled water in a range between -8°C (with a water/glycol mixture) to +20°C. Heating water temperature is available from +30°C to +60°C. The Daikin EWYS-4Z units are an extremely versatile way of
controlling indoor temperature and are well suited to buildings with variable temperature needs, such as hotels, hospitals, and large offi ces. They capture heat recovered when producing chilled water, which also makes them a popular addition to the industry’s range of solutions for reducing carbon emissions from buildings. The range is also available with noise attenuation achieved
through lower fan speeds and a specially designed soundproof compressor cabinet. Enhanced insulation on the refrigerant pipes and special compressor connections also signifi cantly reduce vibration. The EWYS-4Z is equipped with two Shell & Tube heat exchangers on the waterside: one always operates as an evaporator (cold heat exchanger) and the other as a condenser (hot heat exchanger). Copper-aluminium (Cu/Al) fi n and tube coils are used to dissipate excess cooling or heating energy. These design features allow the Daikin polyvalent units to simultaneously meet cooling and heating requirements by following two setpoints simultaneously all year round. Unlike reversible heat pumps, a multi-purpose unit does not
require seasonal changeover and by controlling the two refrigerant circuits independently, it can respond quickly and accurately to a building’s cooling and heating demand patterns.
www.daikinapplied.uk
EPTA
At Chillventa, Epta solidifi ed its position as a Fully Integrated Provider on a global scale, catering to operators in the Retail, Food & Beverage and
Ho.Re. Ca. sectors. In line with the claim ‘Innovation
Reloaded. The Epta Sustainable System,’ all of Epta’s solutions are compliant with the new European F-Gas Regulation (EU) 2024/573 and are geared towards Sustainable Innovation. Epta’s natural refrigeration is founded on three
core technologies that rely exclusively on R290 propane and CO2
.
The Group has developed propane plug-ins, Integral solutions and transcritical CO2
remote cabinets. The propane R290 plug-ins, which
are self-contained refrigerated units available for both positive and negative temperatures, are equipped with an onboard engine and do not require connection to a central refrigeration plant, confi rming their suitability for small retail spaces. Epta’s propane R290 Integral solutions, available with air-cooled (Air) or water-cooled (Waterloop) condensation, feature a fully integrated refrigeration unit pre-assembled within the cabinet. Integral technologies combine the modular approach and energy performance standards of remote cabinets with the same ease of installation as plug-ins, ensuring that product display remains unchanged. Epta’s stand guided visitors through a selection of the Group’s solutions under the Costan and Bonnet Névé brands. On display was the positive vertical model Tango/MultiFresh from the SlimFit/ MultiCity range, which, in specifi c confi gurations, achieves energy class A and delivers 40% energy savings. For the propane Integral solution, Epta presented the GranVista
Integral Ultra/SkyView Integral Perform and GranBering Integral Ultra/SkyLight Integral Perform models, both part of the GranFit/ SkyEff ect family featuring an air condensation system. Notably, the latter, a negative vertical unit tailored for frozen food products, is equipped with compressors with inverters and a new hybrid defrost system, resulting in energy savings of over 30%. Lastly, the vertical positive MD7 from the Nordic Line/Nordic Star, designed for the Hard Discount segment, was showcased in its glycol version.
www.eptarefrigeration.com/en
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www.acr-news.com • December 2024 35
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