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With its new CITY range, Trane® has created a new HVAC product that stretches the capacity reach of screw compressor technology, thanks to the application of Solstice® ze. This configuration enables enhanced heating solutions to be delivered, with heat pump output temperatures now elevated to 80 °C – allowing building owners to move away from fossil fuel heating systems. HOUSING I BUILDING I FOOD INDUSTRY 7 | CASE STUDY | November 2019 | Climalife contact #16 CITY Innovation Trane® has always taken a leadership position in environmental stewar- dship by helping building owners meet environmental preferable goals without compromising efficiency, reliability or safety. Now Trane® has developed a new HVAC range for smaller buildings that opens up a new market segment. Until now, there has been no scroll compressor solution using a <1 GWP refrigerant that could deliver the required capacity. However, the operating map of Solstice® ze has enabled Trane® to launch its new com- pact CITY cooling and heating solutions based on screw compressor technology, offering products ranging from 150kW – 400kW. There are three CITY concepts: • CITY Comfort: cooling in tight city buildings – the system fits a stan- dard elevator for ease of installation. • CITY Booster: a heat pump for water sources at 5–30 °C, including district heating schemes and waste water sources, elevating output temperatures to up to 80 °C, from 67 °C achievable previously. • CITY Process: a dedicated cooling design for process applications down to -12 °C (typically food and drink), overcoming the toxicity and flammability safety concerns associated with ‘natural’ refrigerants. The Solstice® Advantage Solstice® ze Solstice® ze refrigerant (HFO-1234ze) is an ultra-low GWP alternative to traditional refrigerants for energy-efficient chillers and/or commercial air conditioning in supermarkets and commercial buildings. With a GWP <1 – a 99.9% reduction in direct impact versus R-134a – it also meets key performance, cost effectiveness and safety criteria. Solstice® zd Solstice® zd (HFO 1233zd) is a non-flammable, ultra-low GWP repla- cement for R-123 for low pressure centrifugal chillers, offering better capacity and similar efficiency to R-123. With a GWP=1, this refrigerant also offers great potential in high temperature heat pumps. Major chiller manufacturers have already announced product ranges based on Solstice® zd. Solstice® ze and Solstice® zd do not form TFA during decomposition. “The use of R-1234ze aligns perfectly with our Climate Commitment while supporting our customers’ sustainability initiatives. In 2014, Ingersoll Rand publicly committed to increase its energy efficiency and reduce greenhouse gas emissions (GHG) related to its operations and products – the adoption of low GWP refrigerants is very important to these environmental goals and also in helping our customers achieve their own targets.” Erik Van Oossanen, Portfolio Manager, Applied Chillers Europe, Trane® + More info at: climalife.dehon.com/ solstice-ze