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This study investigates the thermal performance of a hydroponic roof system as an alternative strategy to an extensive green roof taking as a case study a prefabricated building module situated in the Mediterranean climate of Catania (Italy). Through dynamic simulations carried out with TRNSYS, the research compares the thermal behavior of a hydroponic roof, an extensive green roof and a lightweight roof with the aim of understanding the effectiveness of the hydroponic solution in reducing the peak roof internal surface temperature and incoming heat flux. The findings indicate that a hydroponic roof system can reduce the peak value of the internal roof surface temperature of 2.7 °C and delay by more than 10 h the peak of the incoming heat flow, which is almost halved with respect to the lightweight roof solution.

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A Preliminary Investigation on the Thermal Performance of a Hydroponic Roof System in Mediterranean Climate

  • 会议论文

  • 发表日期：

    2026年

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  • Francesco Nocera,
  • Vincenzo Costanzo,
  • Maurizio Detommaso,
  • Gianpiero Evola,
  • Marina Mistretta,
  • Sonia Longo

摘要

This study investigates the thermal performance of a hydroponic roof system as an alternative strategy to an extensive green roof taking as a case study a prefabricated building module situated in the Mediterranean climate of Catania (Italy). Through dynamic simulations carried out with TRNSYS, the research compares the thermal behavior of a hydroponic roof, an extensive green roof and a lightweight roof with the aim of understanding the effectiveness of the hydroponic solution in reducing the peak roof internal surface temperature and incoming heat flux. The findings indicate that a hydroponic roof system can reduce the peak value of the internal roof surface temperature of 2.7 °C and delay by more than 10 h the peak of the incoming heat flow, which is almost halved with respect to the lightweight roof solution.