PRIME EVIDENZE DEGLI EFFETTI DELLE NUOVE COPERTURE SUL MICROCLIMA DELLA VILLA ROMANA DEL CASALE

Maria Francesca Alberghina1,3, Ermanno Cacciatore2, Dorotea Fontana3, Guido Meli4, Fernanda Prestileo5, Salvatore Schiavone1,6

1Tecnologo per i beni culturali – Gruppo della Direzione Lavori 2011 - Alto Commissario per la Villa Romana del Casale di Piazza Armerina, francesca.alberghina@gmail.com

2Direttore Operativo Impianti tecnologici, microclima, illuminotecnica – Gruppo della Direzione dei Lavori - Alto Commissario per la Villa Romana del Casale di Piazza Armerina C/o Soprintendenza BCA di Enna - ermanno.cacciatore@regione.sicilia.it

3Dipartimento di Fisica, Università di Palermo, Viale delle Scienze Ed.18, 90128 - Palermo, dorotea.fontana@unipa.it

4Direttore dei Lavori di restauro - Alto Commissario per la Villa Romana del Casale di Piazza Armerina C/o Soprintendenza BCA di Enna - Parco Archeologico della Villa Romana del Casale e delle aree archeologiche di Piazza Armerina e dei Comuni limitrofi, Piazza Garibaldi, 5 - 94015 Piazza Armerina (En), guido.meli@regione.sicilia.it

5Consiglio Nazionale delle Ricerche – Istituto per la Conservazione e la Valorizzazione dei Beni Culturali, Area della Ricerca Roma 1, Via Salaria km 29,300 – CP 10, 00015 Monterotondo St. (RM), f.prestileo@icvbc.cnr.it

6 S.T. Art-Test, via Stovigliai, 88 – 93015 Niscemi (CL) - info@start-test.it

ABSTRACT

In September 2011 has started a new in situ microclimatic monitoring to detect the environmental conditions created by the new covering system of the Villa del Casale di Piazza Armerina (Sicily). The investigation regards sample room, on which the new covering system has been completed, and rooms that still are covered by the methacrylate old system, realized in the 60s, and so many times modified in the following decades. The comparison between the environmental parameters related to the existing covering system that, such as is demonstrated by the previous survey, causes undesired effect both for fruition and for conservation, and the data related to the new covering system, allow to verify the better microclimatic conditions get after the intervention. Preliminary analysis has demonstrated that the new covering system has lowered the temperature level inside the rooms and has rise the humidity values, in comparison with the average values get in the rooms where is still used the methacrylate old covering system. These first analytical data demonstrate that the conservative intervention produce, on the complex physical system of Villa del Casale, positive effect to get correct microclimatic conditions. Indeed, the comparison with the values measured outside allow to verify, for the rooms with new covering system, also the absence of the dangerous greenhouse effect.

Key-words: Archeological site, coverings, microclimatic monitoring