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Qualitative and quantitative assessment of interior moisture buffering by enclosures

Janssen, H. and Roels, S.
2009
Energy and Buildings, 41(4): 382-394
Moisture buffering; Moisture buffer potential; Moisture buffer value; Hygric inertia

Janssen, H. and Roels, S., (2009), "Qualitative and quantitative assessment of interior moisture buffering by enclosures", Energy and Buildings, 41(4): 382-394.
Abstract:
The significance of interior humidity in attaining sustainable, durable, healthy and comfortable buildings is increasingly recognised. Given their significant interaction, any interior humidity appraisal requires a qualitative and/or quantitative assessment of interior moisture buffering. While the effective moisture penetration depth and effective capacitance models allow quantified assessment, their reliance on the ¡®moisture penetration depth' necessitates comprehensive material properties and hampers their application to multidimensional interior objects. On the other hand, while various recently suggested protocols for the simple and fast measurement of the moisture buffer potential of interior elements allow qualitative assessment, none of these are currently dependable for a wide range of moisture production regimes.

In response to these flaws, this paper introduces the production-adaptive characterisation of the moisture buffer potential of interior elements and corroborates their superposition toward a room-enclosure moisture buffer potential. It is verified that this enables qualitative comparison of enclosures in relation to interior moisture buffering. It is moreover demonstrated that it forms an alternative basis for quantitative evaluation of interior moisture buffering by the effective moisture penetration depth and effective capacitance models. The presented methodology uses simple and fast measurements only and can also be applied to multimaterial and/or multidimensional interior element.

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Author Information and Other Publications Notes
Janssen, H.
  1. A comparison of the Nordtest and Japanese test methods for the moisture buffering performance of building materials
  2. Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation
  3. Impact, absorption and evaporation of raindrops on building facades
  4. In situ determination of the moisture buffer potential of room enclosures
  5. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground
  6. The influence of soil moisture transfer on building heat loss via the ground
  7. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  
Roels, S.
Department of Civil Engineering Laboratory of Building Physics Catholic University of Leuven, Belgium
  1. A comparison of different techniques to quantify moisture content profiles in porous building materials
  2. A comparison of the Nordtest and Japanese test methods for the moisture buffering performance of building materials
  3. A quasi-steady state implementation of air convection in a transient heat and moisture building component model
  4. Description of the moisture capacity of building materials
  5. Determination of the isothermal moisture transport properties of porous building materials
  6. Determination of the liquid water diffusivity from transient moisture transfer experiments
  7. Determination of the moisture capacity of porous building materials
  8. Impact, absorption and evaporation of raindrops on building facades
  9. In situ determination of the moisture buffer potential of room enclosures
  10. Microscopic analysis of imbibition processes in oolitic limestone
  11. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
  12. Position paper on material characterization and HAM model benchmarking
  13. Review of mould prediction models and their influence on mould risk evaluation
  14. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components
  15. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  


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