The hygrothermal modelling of historical churches is a promising approach to study preservation issues and suitable retrofit measures. However, difficulties can arise in the use of Heat, Air and Moisture (HAM) models, which are often customised objects to be integrated into validated building energy simulation (BES). This research outlines a multi-step methodology to investigate the capability of a BES software coupled with a HAM model (BES + HAM) as a technique for diagnostics and conservation in complex settings. The 17th-century church of Santa Rosalia (Italy) was used as a historical site in a real context. As first step, the performance of the simulation tool was analysed through standardised exercises aiming at excluding incorrect assumptions and calculations in the HAM model (HMWall). Secondly, a building model of the church using a 1D heat transfer model (named building model A) was compared with one using HMWall (named building model B) in terms of the accuracy of the indoor climate simulations against hygrothermal measurements. The results showed that building model B enhanced the simulation accuracy by +50% with respect to building model A. Finally, annual simulations inside the church were run to further compare the seasonal trends of indoor climate scenario obtained from the two building models. Building model B allowed to study the water content distribution inside the altarpiece and a wall partition, showing that BES + HAM tools can be used to identify potential moisture-induced conservation risks.

Performance assessment of hygrothermal modelling for diagnostics and conservation in an Italian historical church / Frasca, Francesca; Verticchio, Elena; Cornaro, Cristina; Siani, Anna Maria. - In: BUILDING AND ENVIRONMENT. - ISSN 0360-1323. - 193:(2021), pp. 1-14. [10.1016/j.buildenv.2021.107672]

Performance assessment of hygrothermal modelling for diagnostics and conservation in an Italian historical church

Frasca, Francesca
Primo
Conceptualization
;
Verticchio, Elena;Siani, Anna Maria
2021

Abstract

The hygrothermal modelling of historical churches is a promising approach to study preservation issues and suitable retrofit measures. However, difficulties can arise in the use of Heat, Air and Moisture (HAM) models, which are often customised objects to be integrated into validated building energy simulation (BES). This research outlines a multi-step methodology to investigate the capability of a BES software coupled with a HAM model (BES + HAM) as a technique for diagnostics and conservation in complex settings. The 17th-century church of Santa Rosalia (Italy) was used as a historical site in a real context. As first step, the performance of the simulation tool was analysed through standardised exercises aiming at excluding incorrect assumptions and calculations in the HAM model (HMWall). Secondly, a building model of the church using a 1D heat transfer model (named building model A) was compared with one using HMWall (named building model B) in terms of the accuracy of the indoor climate simulations against hygrothermal measurements. The results showed that building model B enhanced the simulation accuracy by +50% with respect to building model A. Finally, annual simulations inside the church were run to further compare the seasonal trends of indoor climate scenario obtained from the two building models. Building model B allowed to study the water content distribution inside the altarpiece and a wall partition, showing that BES + HAM tools can be used to identify potential moisture-induced conservation risks.
2021
historical churches; hygrothermal modelling; historical buildings; HAM model; diagnostics; conservation risks
01 Pubblicazione su rivista::01a Articolo in rivista
Performance assessment of hygrothermal modelling for diagnostics and conservation in an Italian historical church / Frasca, Francesca; Verticchio, Elena; Cornaro, Cristina; Siani, Anna Maria. - In: BUILDING AND ENVIRONMENT. - ISSN 0360-1323. - 193:(2021), pp. 1-14. [10.1016/j.buildenv.2021.107672]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1510943
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