In calculations of building heat loss via the ground, the coupling with soil moisture transfer is generally ignored, an important hypothesis which will be falsified in this paper. Results from coupled simulations -- coupled soil heat and moisture transfer equations and complete surface heat and moisture balances -- are compared to results from linear simulations. It is shown that the coupled calculations give notably higher heat losses. Surface temperature, the driving force for heat loss via the ground, is identified as a first important source for these deviations: it is shown that while the averages of the surface temperature are almost equal in coupled and linear calculations, the amplitude in the coupled simulation is considerably higher. A further study reveals that variation of the thermal properties with moisture content also contributes partially to the observed differences. Transfer and storage of sensible heat linked to moisture in the liquid phase was shown to be the last important influencing factor.

HAMFEM

• thermal analysis and performance

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. Qualitative and quantitative assessment of interior moisture buffering by enclosures
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  

1. A comparison of different techniques to quantify moisture content profiles in porous building materials
2. A multiscale network model for simulating moisture transfer properties of porous media
3. A review of wind-driven rain research in building science
4. A simplified numerical model for rainwater runoff on building facades: Possibilities and limitations
5. Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation
6. Description of the moisture capacity of building materials
7. Determination of the isothermal moisture transport properties of porous building materials
8. Determination of the liquid water diffusivity from transient moisture transfer experiments
9. Determination of the moisture capacity of porous building materials
10. Driving rain on building envelopes II: representative experimental data for driving rain estimation
11. Microscopic analysis of imbibition processes in oolitic limestone
12. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
13. Pedestrian wind environment around buildings: literature review and practical examples
14. Performance prediction for masonry walls with EIFS using calculation procedures and laboratory testing
15. Position paper on material characterization and HAM model benchmarking
16. Rainwater runoff from building facades: A review
17. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components
18. Spatial and temporal distribution of driving rain on a low-rise building
19. Wind, rain and the building envelope: studies at the Laboratory of Building Physics, KULeuven
20. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  

1. A comparison of different techniques to quantify moisture content profiles in porous building materials
2. Application of a new type of air and vapor retarder in a self-drying sloped roof with a cathedral ceiling
3. Building envelopes in a holistic perspective
4. Condensation risk assessment
5. Determination of the liquid water diffusivity from transient moisture transfer experiments
6. Evaluating the thermal performance of active envelopes
7. Fungal defacement in buildings: a performance related approach
8. Heat and moisture response of vented and compact cathedral ceilings: a test house evaluation
9. Heat, air and moisture transfer in insulated envelope parts. Final Report, Volume 1, Modelling
10. Heat-air-moisture design of masonry cavity walls: theoretical and experimental results and practice
11. Hygric properties of a new humidity controlled vapor retarder
12. IEA Annex 14: Condensation and Energy
13. Inquiry on HAMCAT codes
14. Interstitial condensation due to air leakage: a sensitivity analysis
15. Microscopic analysis of imbibition processes in oolitic limestone
16. Modeling. Final Report
17. Performance prediction for masonry walls with EIFS using calculation procedures and laboratory testing
18. Performance-based development of a thermally insulated pitched roof system
19. Pitched roofs, heat-air-moisture transport in tiled and slated roofs with the thermal insulation at rafter level
20. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components