With estimates predicting an alarming global increase in the use of air conditioners (reports estimate 700 million new air conditioners, with an energy consumption equalling that of several countries, will be installed by 2030), a technology that can turn the heat down on the cooling industry is much needed. Christoffersen, co-founder of STAC Technology, explains how his company aims to do just that. “STAC Technology’s main idea and ambition is to provide a global sustainable refrigerant solution using hot water from the district heating system to create cool air. Our turbine solution might be described as a modern steam engine in which water is heated up to run a turbine that pulls the energy out of the air via a process that creates cool air or another form of cooling. It can also be used to produce hot air in the winter.”

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