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Integration of simplified drying tests and numerical simulation in moisture performance analysis of the building envelope

Ojanen, T., Salonvaara, M. and Simonson, C. J.
2002
6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17


Ojanen, T., Salonvaara, M. and Simonson, C. J., (2002), "Integration of simplified drying tests and numerical simulation in moisture performance analysis of the building envelope", 6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17.
Abstract:
Introduction

... "Performance tests are needed to determine the moisture performance of a building envelope component under drying conditions, when the inside surface of the wind barrier may have condensation and the temperature may be below freezing level. A special apparatus and test method have been developed to study the drying efficiency of a building envelope under 1-dimensional temperature and moisture gradient conditions. This test gives a simplified representation of the real structure, but under realis tic boundary conditions.

This paper presents the drying efficiency test method, the test results of some experimentally studied structures, and also how the test results can be used with numerical simulation models. The presented method integrates simplified experimental tests with numerical simulation models, which form a process to study and desig n moisture safe structures."


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Author Information and Other Publications Notes
Ojanen, T.
Tiiomo Ojanen Senior research scientist VTT Building Technology, Finland.
  1. Drying capabilities of wood frame walls with wood siding
  2. Effect of exfiltration on the hygrothermal behaviour of a residential wall assembly: results from calculations and computer simulations
  3. Heat and mass transfer between indoor air and a permeable and hygroscopic building envelope: part I -- field measurements
  4. Heat and mass transfer between indoor air and a permeable and hygroscopic building envelope: part II --verification and numerical studies
  5. Improving indoor climate and comfort with wooden structures
  6. Improving the drying efficiency of timber frame walls in cold climates, by using exterior insulation
  7. Measuring and modeling vapor boundary layer growth during transient diffusion heat and moisture transfer in cellulose insulation
  8. Modeling heat, air and moisture transport through building materials and components
  9. Moisture and bio-deterioration risk of building materials and structuresL?hdesm?ki
  10. Moisture buffer value of building materials
  11. Moisture Buffer Value of Materials in Buildings
  12. Moisture performance of an airtight, vapor-permeable building envelope in a cold climate
  13. Moisture transport coefficient of pine from gamma ray absorption measurements
  14. Numerical simulation of mould growth in timber frame walls
  15. Thermal and moisture performance of a sealed cold-roof system with a vapor-permeable underlay
  16. Towards modelling of decay risk of wooden materials  
Salonvaara, M.
Research Scientist, VTT Building Technology, Espoo, Finland
  1. Drying capabilities of wood frame walls with wood siding
  2. EIFS hygrothermal performance due to initial construction moisture as a function of air leakage, interior cavity insulation, and climate conditions
  3. Heat and mass transfer between indoor air and a permeable and hygroscopic building envelope: part I -- field measurements
  4. Heat and mass transfer between indoor air and a permeable and hygroscopic building envelope: part II --verification and numerical studies
  5. Hygrothermal performance of a new light gauge steel-framed envelope system
  6. Hygrothermal system-performance of a whole building
  7. Improving indoor climate and comfort with wooden structures
  8. Influence of material properties on the hygrothermal performance of a high-rise residential wall
  9. Integrated hygrothermal performance of building envelopes and systems
  10. Measurements and two-dimensional computer simulations of the hygrothermal performance of a wood frame wall
  11. Measuring and modeling vapor boundary layer growth during transient diffusion heat and moisture transfer in cellulose insulation
  12. Moisture transport in building envelopes using an approximate factorization solution method
  13. Numerical simulation of mould growth in timber frame walls
  14. Prediction of hygrothermal performance of building envelope parts coupled with indoor climate
  15. Stochastic building envelope modeling -- the influence of material properties  
Simonson, C. J.
  1. An experimental data set for benchmarking 1-D, transient heat and moisture transfer models of hygroscopic building materials. Part II: Experimental, numerical and analytical data
  2. Effect of initial conditions, boundary conditions and thickness on the moisture buffering capacity of spruce plywood
  3. Heat and mass transfer between indoor air and a permeable and hygroscopic building envelope: part I -- field measurements
  4. Heat and mass transfer between indoor air and a permeable and hygroscopic building envelope: part II --verification and numerical studies
  5. Improving indoor climate and comfort with wooden structures
  6. Measuring and modeling vapor boundary layer growth during transient diffusion heat and moisture transfer in cellulose insulation
  7. Moisture buffering capacity of hygroscopic building materials: Experimental facilities and energy impact
  8. Moisture performance of an airtight, vapor-permeable building envelope in a cold climate
  9. Moisture, thermal and ventilation performance of Tapanila ecological house  



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