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INDUSTRIAL REFRIGERATION I BAKERY Feedback: Bakery refrigeration specialist; IceCool opts for Solstice® L40X Around the world, IceCool designs and installs proofing cabinets as well as cooling, freezing and packaging chambers for unpackaged bread dough. Peter Wehrens, Export Manager R&D IceCool International BV and Marco Oosdijk Sales Representative Climalife. Since the company was established in 2008, it has earned an excellent reputation amongst industrial bakers around the world, thanks to its inno- vative approach and tailor-made solutions. Design of eco-friendly facilities In order to offer clients sustainable and lasting facilities that comply with F-Gas regulation, IceCool takes into account the GWP, TEWI and life cycle (LCCP)* of a refrigerant. Following several conclusive experiments, par- ticularly that of the Feihl bakery in Neumarkt, Germany, mentioned in our previous issue**, Peter Wehrens, Export Manager R&D at IceCool International BV, is convinced that Solstice® L40X (R-455A) is a suitable and effective solu- tion, even when the external temperature is both high and highly variable. New facility for Grobe IceCool has designed a new baking room for cooling, proofing and storing bread dough for the German family-run bakery, Grobe, which, with around 400 employees and 56 outlets, is one of the main employers of this sector in Dortmund and the surrounding area, The new bakery has ten 16m2 cooling units that operate at a temperature of between -15 °C and +15 °C. IceCool’s Slow Prover Tray system comprises a fully automatic cooling and proofing pro- cess and removes excess moisture so that the dough can develop its full flavour without forming a skin. R-455A outperforms R-744 After studying the advantages and disadvan- tages of a CO2 system in terms of energy use, safety, leaks, flammability, installation and maintenance costs, and respect for the envi- ronment, it was quickly decided that Solstice® L40X (R-455A) should be used for the refriger- ation system of the 500m2 warehouse. Consideration of A2L classification In order to comply with the current regulations on low flammability, the installation comprises of two refrigeration circuits with a total refrig- eration power of 108 kW. Each circuit contains 72.9kg of Solstice® L40X refrigerant (R-455A) and is designed to fall under category III of the Pressure Equipment Directive (PED), thereby reducing the frequency of the leak test to once a year. Regarding the temperature glide For their first project with R-445A, IceCool worked closely with Güntner to design the evaporators and condensers. Peter Wehrens explains: “We use electronic valves on all of the evaporators in order to ensure a small delta T in the evaporator across the whole temperature range. This is necessary as moisture in the room is an important factor for the production of unpackaged dough. Finally, the temperature glide does not pose a problem: you just have to oversize the evapo- rator and keep the temperature difference as small as possible.” Overview of a circuit Description Medium temp. Evap T / Cond. T -20°C / +30°C Cooling capacity (kW) 54 Condensing capacity (kW) 79.1 Bitzer compressors 3x 4PES-12Y Classification A2L Refrigerant R-455A GWP 148 Load (kg) 72.9 Tonnes of CO2 eq 10.7 PED category III Leak test per year 1 *GWP = Global Warming Potential TEWI = Total Equivalent Warming Impact and LCCP = Life Cycle Climate Performance. **Climalife Contact #15. ICECOOL IN BRIEF + More info at: climalife.dehon.com/r-455a- solstice-l40x 5 | CASE STUDY | November 2019 | Climalife contact #16 2008 Founded Business: Design and construction of refrigeration installations for bakeries. 35 employees Location: Echt, the Netherlands.