The use of naturally occurring refrigerants in HVAC systems will contribute to decarbonization
TOKYO–(BUSINESS WIRE)–Mitsubishi Electric Corporation (TOKYO: 6503) today announced that its Italian subsidiary Mitsubishi Electric (OTC:) Klimat Transportation Systems SpA has received an order from Siemens Mobility GmbH for 1,350 heating, ventilation and air conditioning (HVAC) systems using the natural propane refrigerant R290, to be installed in next-generation trains on the S-Bahn railway system in Munich, Germany. The Mitsubishi Electric subsidiary, which will be the first Japanese subsidiary to supply HVAC systems using R290 refrigerant for use in trains, will deliver 1,170 units for train cabins and 180 units for train control cabins between fiscal years 2026 and 2032.
The public company Bayerische Eisenbahngesellschaft mbH and the subsidiary DB Regio AG of Deutsche Bahn AG are planning to purchase the new trains to meet the growing expectations of passengers. The new trains will not only offer improved transport possibilities, but will also introduce state-of-the-art technologies for purposes such as reduced energy consumption, lower maintenance costs and the use of free Wi-Fi.
Non-flammable alternative freons such as R407C and R134a, which are widely used in railway HVAC systems, are problematic due to their high global warming potential (GWP), which is an index that measures how much heat a greenhouse gas can absorb in the atmosphere compared to CO2. R290 has a very low GWP, but systems using it require special design and installation safety measures due to R290’s flammability.
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Source: Mitsubishi Electric Corporation