Julian Hunt is a Postdoctoral Research Scholar at IIASA where he is working with the Energy (ENE) and Water (WAT) programs in collaboration with the CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior, Education Ministry) Brazilian Foundation for support researchers. Dr. Hunt’s research interests include analysis of energy systems, water-energy-land interfaces, climate change risks and energy security. Currently, his research at IIASA aims to create scenarios for long-term energy planning, including seasonal renewable energy, demands and storage (particularly seasonal pumped-storage) using MESSAGE. Dr. Hunt joined IIASA from the National Commission for Nuclear Energy in Brazil, where he was working on a hybrid nuclear generation and seawater desalination project. He holds a D.Phil in Engineering Science from the University of Oxford, where he developed a decision support system to optimize energy and water projects in the UK. He also holds a B.Eng degree in Chemical Engineering from the University of Nottingham. Previously, Dr. Hunt worked at the Energy and Climate Change Branch of UNIDO.
Swimming pool thermal energy storage, an alternative for distributed cooling energy storage
The rise in distributed renewable energy generation creates a growing need to find viable solutions for energy storage to match energy demand and supply at any time. This paper evaluates the possibility of using swimming pools as a long-term cooling energy storage solution, i.e., Swimming Pool Thermal Energy Storage (SPTES). This technology allows a small building to store solar energy for cooling purposes in a yearly cycle, by filling the pool with ice slurry in winter and using that ice to cool the house in the summertime. Additionally, the pool can be used as a heat sink for a heat pump to heat the house during the winter. Results show that the energy storage cost of 0.078 US$ kWhe−1 is substantially smaller when compared with batteries (125 US$ kWhe−1). This makes SPTES a good alternative to support the development of 100% renewable energy systems in locations where the climate has a highly seasonal variation in temperature and the cooling demand is high in summer.