The fact that many people spent more than 90% of their time in a more or less artificial indoor environment (i.e. office, factory, home, transport vehicles etc.) stresses the importance of a proper indoor exposure assessment. When the personal exposure in a ventilated room is to be determined one may choose to perform a series of measurements or to use a model for calculation. Both approaches may lead to erroneous results if they are not treated properly. For instance C.E. Rodes et al.
This is the first part of a planned research into the effect of the human being on the indoor climate. The results are among other things intended for CFD calculations. This part deals with the influence from breathing, smoking, bioeffluents and vapour. The results are mainly based on measurements around a breathing thermal model placed in three fundamentally different types of indoor climates:
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