Attending 15th SDEWES Conference

Selman Sevindik attends online 15th SDEWES (Sustainable Development of Energy, Water and Environment Systems) Conference

Selman presented his work which compares the environmental impacts of heat pumps with gas boilers and scenario analysis through a life cycle approach at the 15th SDEWES conference held online. The study shows that use and disposal phase is responsible for 60% and 21% of all environmental impacts of heat pumps and gas boilers. Manufacturing phase of heat pumps account for only 14% of all impacts. However, these emissions occur outside of the UK as they are manufactured in Europe. Even though electricity mix of UK has decarbonised substantially during the last decade heat pumps has still higher lifetime impacts than gas boilers in all environmental categories except climate change impact. Replacing gas boilers with heat pumps in domestic sector could provide a reduction in carbon emissions in future scenarios with more decarbonisation measures, however, in other impacts categories, they do not present advantages. Gas boiler has 79% lower impact than hat pumps on average in all categories but in climate change category boiler results 156% higher GHG emissions than heat pumps. Future scenarios offer significant reductions in most of the impact categories. Circular Economy scenario has the highest potential with 54% reduction on average. Resource Efficiency and Limited Growth scenarios has smaller potential than Circular Economy scenario relatively (49% and 43% respectively). The highest reductions are expected for particulate matter formation and climate change impacts with 88% and 87% in Circular Economy scenario. However, future scenarios do not have an impact on ozone depletion category as the amount of refrigerant is the same for all scenarios.

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