ABSTRACT
In connection with wooden beam ends embedded within areas of outside walls the opinion of experts in regard with the inside insulated walls differ considerably. In this paper the hygrothermal performance of wooden beam ends aided by heating pipes or so called heating bars are discussed. A lot of measurements are carried out in test houses in-situ under condition of use during several years and by means of a special test stand. They demonstrate the impact of installed heating flow and return, heating bars and the different influences of the inhabitant’s activities on the temperature fields and moisture content of the endangered wooden beam ends. Besides the effect of natural and forced ventilation is measured. Moreover the results of the investigations base on calculations using the numerical simulation of the coupled heat- moisture- and air transfer in capillary porous materials dependent on various climate boundary conditions.
