Schiebler, Bert, Maik Kirchner, Julian Jensen, and Federico Giovannetti. “Stagnation in Large-Scale Solar Thermal Systems? Experiences From Recent Installations As Motivation for Heat Pipe Collectors in a Novel System Design”. Solarthermie-Symposium Proceedings 2 (February 26, 2026). Accessed March 9, 2026. https://www.tib-op.org/ojs/index.php/ST-symposium/article/view/2747.