1. Title: Borehole Heat Exchanger with macro-encapsulated phase change material,
   Utility model (Portugal), Application 13.07.2021 Patent application 21185235.5

2. Title: Anticorrosive high thermal conductivity AlN coating for metallic surfaces in contact with salt hydrates and its application to heat exchangers used in thermal energy storage systems,
   European patent, Status: Granted 2023.08.02, Application 17.03.2021 Patent application EP3792372