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The main objective of the project is the development of several reliable, safe, high efficiency and high capacity heat pumps working with the two most promising natural refrigerants: Hydrocarbons andCO2, together with a set of improved components and auxiliary devices adequate for the efficient and safe use of the two refrigerants.The project aims to reach a higher efficiency (10-20% SPF improveme ...

In residential and commercial buildings, Heating, Ventilation, and Air Conditioning (HVAC) systems constitute about 35% of the total energy consumption. Although today, heating is the most energy demanding need, there is an increasing demand for cooling which is expected to increase even further in the years to come due to climate changes. To decrease the overall energy demand, it is vital to loo ...