The necessity to control the indoor microclimate conditions inside the Camera Picta requested to perform detailed investigations by means of permanent measurements of the air temperature, air humidity, and surfaces temperatures and computer simulations. The measurements have been implemented by IR thermography investigations and by local air velocity measurements. The collected data allows to carefully characterize the microclimate of the Camera Picta and a fully knowledge of the temperature profiles of the internal walls. The remarkable possibilities of modern computer simulations codes coupled with the mathematical modelisation allow to obtain useful information for conservation scopes: the method applicability is proposed here for designing the HVAC (Heating Ventilation Air Conditioning) plant system in a case in which peculiar attention to intrusive apparatus shall be paid. It is important to point out that the mathematical simulation must be put right with measurements and a considerable number of simulations is necessary for a more detailed analysis. The possible variations of the microclimate due to the presence of the visitors have been evaluated; at the same time it is possible to evaluate which indoor thermal conditions can strongly influence the conservation of painted walls. The proposed system solution allowed to maintain the microclimate indoor conditions in a range of values congruent with the results obtained by the previous studies. The adopted solution allows to check and to control the indoor air quality levels (minimizing the exchanges with the adjacent rooms and with the outdoor), to make stable the indoor vapour in order to avoid surfaces condensation phenomena and minimizing the capillarity condensation and, when possible, to increase the number of visitors simultaneously present inside the Camera Picta.
On the applicability of HVAC system for cultural heritage: the wedding chamber (Camera Picta) in Mantova (Italy)
CAPPELLETTI, FRANCESCA;PERON, FABIO;ROMAGNONI, PIERCARLO;
2014-01-01
Abstract
The necessity to control the indoor microclimate conditions inside the Camera Picta requested to perform detailed investigations by means of permanent measurements of the air temperature, air humidity, and surfaces temperatures and computer simulations. The measurements have been implemented by IR thermography investigations and by local air velocity measurements. The collected data allows to carefully characterize the microclimate of the Camera Picta and a fully knowledge of the temperature profiles of the internal walls. The remarkable possibilities of modern computer simulations codes coupled with the mathematical modelisation allow to obtain useful information for conservation scopes: the method applicability is proposed here for designing the HVAC (Heating Ventilation Air Conditioning) plant system in a case in which peculiar attention to intrusive apparatus shall be paid. It is important to point out that the mathematical simulation must be put right with measurements and a considerable number of simulations is necessary for a more detailed analysis. The possible variations of the microclimate due to the presence of the visitors have been evaluated; at the same time it is possible to evaluate which indoor thermal conditions can strongly influence the conservation of painted walls. The proposed system solution allowed to maintain the microclimate indoor conditions in a range of values congruent with the results obtained by the previous studies. The adopted solution allows to check and to control the indoor air quality levels (minimizing the exchanges with the adjacent rooms and with the outdoor), to make stable the indoor vapour in order to avoid surfaces condensation phenomena and minimizing the capillarity condensation and, when possible, to increase the number of visitors simultaneously present inside the Camera Picta.
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