Numerical analysis on thermal environment under four kinds of chair ventilation

Presents the simplified model and calculating method. Compares the predicted distribution of air velocity and temperature with those obtained from experiments, and considers that the data agree well with each other. Simulates the effects of four kinds of chair ventilation by the simplified model under the same condition, as a result, under-chair with backrest ventilation has the best thermal comfort effect, under-chair ventilation has the worst thermal comfort effect, and the thermal comfort of the others is between those of above two modes. Suggests that the thermal comfort effect and initial cost be taken into account in selection of ventilation type in project design.