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Dear all, My Ph.D. project concerns the heat transfer between buildings and the ground, more particularly, the influence of the coupling between heat and moisture transfer in this process. One aspect of this project is the performance of scale model measurements, in which I would like to observe the thermal and hygric behaviour of the ground domain around a foundation structure. For the in situ measurement of the thermal properties - and their variation - I am planning to use heat dissipation probes. The results of such measurements allow the determination of the moisture content of the soil as well. I was wondering though, if this particular measurement technique - the heat dissipation method - is competitive with other soil moisture measuring techniques. How accurate is such a heat probe measurement ? If anyone has any practical experience with such measuring devices, and may be able to inform me about this topic, please do. Thank you, hans ================================================================= Hans Janssen IWT Research Fellow Laboratory for Building Physics Celestijnenlaan 131, 3001 Heverlee, Belgium Tel: +16 321767 Fax: +16 321980 http://www.bwk.kuleuven.ac.be/bwf E-mail: Hans.Janssen@bwk.kuleuven.ac.be =================================================================