Impact of solar radiation and environmental temperature on Art Nouveau glass windows

Teresa Palomar, Miguel Silva, Marcia Vilarigues, Isabel Pombo Cardoso, David Giovannacci

Research output: Contribution to journalArticle

8 Citations (Scopus)


This work presents the results of the evaluation of two Art Nouveau glass windows from the Casa-Museu Dr. Anastácio Gonçalves (Lisbon, Portugal) with IR-thermography during the summer solstice. According to the measurements, the surface temperature of glass depended on the outdoor environmental temperature and, mainly, on the direct solar radiation. Colored glasses presented a higher surface temperature due to the absorption of their chromophores at near-IR wavelengths. Enamels and grisailles showed higher surface temperatures than their support glasses due to both their chemical composition and color. The protective glazing, with small slits in one of the window panels, induced a hot-air pocket in its upper part due to the insufficient ventilation.[Figure not available: see fulltext.]

Original languageEnglish
Article number82
JournalHeritage Science
Issue number1
Publication statusPublished - 1 Dec 2019


  • Art Nouveau
  • Glass windows
  • IR thermography
  • Protective glazing
  • Vitreous paints

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