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Proceedings of BSA Conference 2022: Fifth Conference of IBPSA-Italy

     

Design and Evaluation of Extreme Moisture Reference Years for Moisture-Related Risk Assessments

Michele Libralato, Giovanni Pernigotto, Alessandro Prada, Alessandra De Angelis, Onorio Saro, Andrea Gasparella

Abstract: In this paper, the efficient use of a building-plant system in terms of thermal comfort conditions for a real conference room was verified in the summer by its digital twin. A DesignBuilder model was calibrated by experimental data concerning the indoor air temperature, average radiant temperature, relative humidity and CO2 concentration. Different situations for people's well-being were studied by varying emitter typology, control strategies, subjective parameters and internal loads. The EMS tool was used to simulate high-level control strategies. It was found that radiant ceilings in continuous operation could promote situations of undercooling, whereas a predicted plant operation is appropriate with intermittent functioning. People's metabolism affects comfort conditions more than internal loads, determining an increase of about 3 degrees in indoor air and mean radiant temperature. Inlet temperature variations in fan coils modify comfort conditions marginally. However, these emitters interact worse with internal loads than radiant ceilings. Aside from the Fanger PMV, discomfort indices following EN 15251 were also evaluated. However, in prevision of the implementation of predictive control strategies, the degree hour approach is not recommended because it does not consider clothing resistance properly.
Pages: 185 - 192
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