1. Institute IMDEA Energy, Avenida Ramón
de la Sagra, 3, 28935 Móstoles, Spain
2. Solar Technology Laboratory, Paul Scherrer Institute (PSI), 5232
Villigen PSI, Switzerland
3. Department of Mechanical and Process Engineering, Eidgenössische Technische Hochschule (ETH) Zürich, 8092 Zurich, Switzerland