A full-scale radiant-capacitive cooling system (RCCS) was implemented in Arganda del Rey, Spain, to evaluate passive radiative cooling (PRC) materials. The hydronic system includes sky-exposed radiators, indoor radiant ceiling panels, and thermal energy storage. The thermal performance of the radiators was evaluated under two conditions: with and without PRC material. The cooling potential was assessed based on the water temperature difference between the radiator inlet and outlet. Multiple correlation models, incorporating the most influential climatic and operational factors, were developed to comparatively analyze the experimental series. Their application enabled the identification of the best-performing configurations and the conditions under which they are most effective. The application of PRC material increased cooling hours and maintained the daily cooling potential between 52.4 and 68.1 W/m² . This cooling effect ensured that operating temperatures remained within the thermal comfort range, even under extreme conditions (~40 °C). These findings highlight the potential of PRC materials to enhance sustainable cooling solutions for buildings and improve energy efficiency.
Cooling Potential Assessment of PRC Materials: Findings from a Full-Scale Prototype Study / González-Cruz, Eduardo M.; Pérez, Gloria; Borja, Fruto; Alonso, Carmen; Martín-Consuegra, Fernando; Pattelli, Lorenzo. - (2025), pp. 123-131. ( Construction, Energy, Environment and Sustainability Bari 11-13 June 2025) [10.1007/978-981-95-1826-5_14].
Cooling Potential Assessment of PRC Materials: Findings from a Full-Scale Prototype Study
Pattelli, Lorenzo
2025
Abstract
A full-scale radiant-capacitive cooling system (RCCS) was implemented in Arganda del Rey, Spain, to evaluate passive radiative cooling (PRC) materials. The hydronic system includes sky-exposed radiators, indoor radiant ceiling panels, and thermal energy storage. The thermal performance of the radiators was evaluated under two conditions: with and without PRC material. The cooling potential was assessed based on the water temperature difference between the radiator inlet and outlet. Multiple correlation models, incorporating the most influential climatic and operational factors, were developed to comparatively analyze the experimental series. Their application enabled the identification of the best-performing configurations and the conditions under which they are most effective. The application of PRC material increased cooling hours and maintained the daily cooling potential between 52.4 and 68.1 W/m² . This cooling effect ensured that operating temperatures remained within the thermal comfort range, even under extreme conditions (~40 °C). These findings highlight the potential of PRC materials to enhance sustainable cooling solutions for buildings and improve energy efficiency.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
