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HPT researchers visit PSA-CIEMAT in Almería to explore solar energy innovations

Solar furnace and HPT researchers.
Published Feb 19, 2025

Two weeks ago, researchers from the HPT division visited the PSA-CIEMAT Almería Solar Platform for a day of collaboration and knowledge exchange. The visit provided an opportunity to explore state-of-the-art facilities supporting the PRINCESS and DETECTIVE projects, which aim to advance point-focus and linear solar concentration technologies.

The KTH team toured key experimental facilities, including the CESA tower (Figure 1), the solar furnace (Figures 2 and 3), and the parabolic trough collector loop (Figure 4). The visit continued with a focus on thermal storage infrastructures, particularly the molten salt and CO₂ loop, which play a crucial role in improving energy storage and management. The team also visited the OPAC facilities, where solar thermal components undergo optical characterization and durability testing.

The tour was guided by PSA-CIEMAT experts (Arantxa Fernández, Daniel Sánchez, Diego Alarcón, and Margarita Rodríguez). The visiting HPT researchers — Rafael Guedez , Silvia Trevisan , and Salvatore Guccione  — had the chance to engage with the latest solar technologies and research methods. This visit reinforced the importance of advanced facilities in developing sustainable energy solutions and strengthening collaborations in renewable energy research.

Figure 1 - CESA tower: a very flexible facility operated for testing subsystems and components such as heliostats, solar receivers, thermal storage, solarized gas turbines, control systems and concentrated high flux solar radiation measurement instrumentation.
Figure 2 - Solar furnace: a structure that uses concentrated solar power to produce high temperatures.
Figure 3 - Solar furnace.
Figure 4 - Parabolic trough: a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two.
Figure 5 - HPT researchers: from left to right, Silvia, Salvatore, and Rafael.
Figure 6 - From left to right: Rafael, Christoph, Silvia, Daniel, Arantxa, and Salvatore.

For more details about the DETECTIVE project, click here .

KTH researchers in the visit:

Silvia Trevisan
Silvia Trevisan assistant professor trevisan@kth.se Profile