Share this page Project Circular Components in Built Environment Circularity in Urban Regions Creating a circular economy (CE) in the built environment is one of today’s biggest societal challenges. In this project the proofs of principle for a Circular Kitchen and a Circular Plug-and-play Central Heating Boiler were developed and tested. Project Circular Components in Built Environment Circularity in Urban Regions Creating a circular economy (CE) in the built environment is one of today’s biggest societal challenges. In this project the proofs of principle for a Circular Kitchen and a Circular Plug-and-play Central Heating Boiler were developed and tested. Project Circular Components in Built Environment Circularity in Urban Regions Creating a circular economy (CE) in the built environment is one of today’s biggest societal challenges. In this project the proofs of principle for a Circular Kitchen and a Circular Plug-and-play Central Heating Boiler were developed and tested.