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10 | CASE STUDY | November 2019 | Climalife contact #16 ETT considers Solstice® L41y as a replacement for R-410A AIR CONDITIONING I HEATING I VENTILATION About A leader in the heating, air conditioning and ventilation market, the R&D department at ETT is always looking for innovative solutions for its customers, as part of a responsible energy approach. A short overview of ETT Created in 1979, ETT is an industrial manufacturing company specialising in heat transfer, producing aluminium equipment in France. Located in Ploudalmézeau, in Brittany, on an ISO 9001 and ISO 14001-certified industrial site covering 18,000 sq. m, the company has experienced significant growth, with innovation at the heart of its strategy. ETT’s other great strength is its customer service, with a dedicated team of approximately fifty employees who coordinate all aspects of the various projects. The team is active in the fields of wholesale, specialist retail, service industries, industry, cinemas, leisure centres and swimming pools primarily in Europe with an increasing number of international projects. The company offers a wide range of products, from standard machines such as Rooftop represents 40% of its business–to air handling equipment from 20 to 250 kW and custom-built machines. The requirements for saving energy, ensuring customer comfort and guaranteeing machinery remain. French manufacturer ETT is recognised as a specialist in custom design air handling systems with energy recovery, and the manufacturing of energy efficient heat pumps. Customer satisfac- tion is a priority for ETT. Faced with F-Gas regulations and quota issues, the company is staying one step ahead, testing new refrigerants on the market to be able to support its customers, offering medium and long-term solutions for new and existing installations. The introduction of new A2L or A3 molecules requires a specialist to update the design of their machines, to ensure they comply with flammable product leg- islation. Tests are also carried out to understand the behaviour and performance of various refrigerants in their equipment. R-452B, an option for replacing R-410A ETT is performing tests in collaboration with Climalife and the manufacturer Honeywell, on a prototype with Solstice® L41y. The methodology used is described on the next page of this article. In air/water applications, R-452B allows very quick replacement with reduced capital expenditure, which is not the case for air/air machines. In comparison to R-410A, the advantage of this refrigerant is that it uses the same compressor operating envelope. It also enables hot water to be produced at a low tem- perature, which is not possible with other refrigerants such as R-32. In rooftop applications, the intrinsic behaviour of R-452B is similar to R-410A. As Mikael Le Borgne, R&D Director points out, “R-452B has a similar level of performance and power, and is easy to integrate into existing products without making any major modifications”. Some other refrigerants are also being tested in parallel on different applications, with ETT investigating all so that they can offer the best solutions. In conclusion, Mikael Le Borgne emphasises how, “\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\[we are\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\] waiting for approval from compressor and part manufacturers so that we can finalise our equipment and then we will be fully prepared for the future”. ETT IN BRIEF 1979 286 € 47 Location : Ploudalmézeau, Founded employees million in 2018 Brittany, (France). Business: Heating, air conditioning and ventilation system manufacturer.