PowerPoint-presentatie€¦ · Title: PowerPoint-presentatie Author: Spierenburg, M. Created Date:...
Transcript of PowerPoint-presentatie€¦ · Title: PowerPoint-presentatie Author: Spierenburg, M. Created Date:...
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Heat and moisture in
wooden bearings of
monumental
buildings
Henk Schellen TU/e
Jos van Schijndel TU/e
Menno Spierenburg DPA
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Content
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• Introduction
• HAM Simulations
– Validation
• Case study
• Conclusion
• Recommendation
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3 Source: erfgoedmonitor.nl/indicatoren/gebouwde-rijksmonumenten-actuele-stand
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4 Source: erfgoedmonitor.nl/indicatoren/gebouwde-rijksmonumenten-actuele-stand
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5 Source: erfgoedmonitor.nl/indicatoren/gebouwde-rijksmonumenten-actuele-stand
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Wood in buildings
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Typical construction
- Masonry walls
- Wooden floors
- Wooden truss
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Wood in buildings
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Risks typical construction
- High wind driven rain load
- Leakages
- Cracks
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Wood in buildings
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Interior insulation risks
- Moisture buildup in materials
- Mould growth
- Deterioration of wood
Area of concern
- Air permeability of construction
- Connection vapour barrier
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HAM Simulations
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Heat, Air and Moisture
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Comparison with Delphin
- Materials from Delphin
- Boundary conditions [Rafidiarison, et al. 2015]
- Comsol model based at Goesten, S. [2016]
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Position 127mm
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Case study
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Harrestrup, M. [2016]
• Reproduction with COMSOL
• Adapted to Dutch sizes
• Usage of Dutch climate
• Year 2012 (average)
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Case study
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Different categories
- Indoor climate
- Insulation type
- Construction type
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Case study
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Different categories
- Indoor climate
- Insulation type
- Construction type
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Case study
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Different categories
- Indoor climate
- Insulation type
- Construction type
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Case study
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Different categories
- Indoor climate
- Insulation type
- Construction type
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Indoor climate:
RH at 30-12-2012
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Insulation material:
RH at 30-12-2012
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Construction:
Active heating 35ºC 200 mm gap
RH at 30-12-2012
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Construction:
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Conclusion
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Interior insulation possible
- Museum indoor climate (worst case)
- Moisture buildup
- Risk of mould growth at surface
Effective measures
- Active heating
- Insulation gap of 200mm
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Recommendations
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Improvement simulation model
- Solar radiation
- Wind/rain climate (measured or with CFD)
- Simulation multiple years
- 3D models
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Questions
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