Optimal setpoint operation of the climate control of a monumental church

A.W.M. Schijndel, van, D. Neilen, H.L. Schellen, M.A.P. Aarle, van

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Abstract

The paper presents the characteristics of the Walloon Church in Delft (Netherlands) and a description of constraints for the indoor climate, giving criteria for the indoor air temperature and relative humidity with the focus on the preservation of the monumental organ. The setpoint operation of the HVAC system is evaluated by simulation using MatLab, FemLab and Simulink models. The next main model components are presented and combined in a single integrated SimuLink model: 1) a WaVo Simulink building model for simulating the indoor temperature and relative humidity, 2) a FemLab PDE model for simulating detailed dynamic moisture transport in the monumental wood (organ) and 3) a Simulink controller model. The building model is validated with measurements. The main advantage of the integrated model is that it directly simulates the impact of HVAC control setpoint strategies on the indoor climate and the organ. Two types of control strategies are discussed. The first type is a limited indoor air temperature changing rate. The second type is a limited indoor air relative humidity changing rate. Recommendations from international literature suggest that 1) a changing rate of 2 K/h will preserve the interior of churches and 2) a limited drying rate is important for the conservation of monumental wood. This preliminary study shows that a limitation of indoor air temperature changing rate of 2 K/h can reduce the peak drying rates by a factor 20 and a limitation of the relative humidity changing rate of 2 %/h can reduce the peak drying rates by a factor 50. The second strategy has the disadvantage that the heating time is not constant
Original languageEnglish
Title of host publicationProceedings 2nd International Conference on Building Physics, Antwerpen, September 2003
EditorsJ. Carmeliet
Place of PublicationRotterdam, Netherlands
PublisherIn-house publishing
Pages777-784
Publication statusPublished - 2003
Event2nd International Building Physics Conference (IBPC 2003) - Leuven, Belgium
Duration: 14 Sep 200318 Sep 2003
Conference number: 2

Conference

Conference2nd International Building Physics Conference (IBPC 2003)
Abbreviated titleIBPC 2003
CountryBelgium
CityLeuven
Period14/09/0318/09/03
Other"Research in Building Physics"

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