Hiroshi Yoshino 1 , Joonghoon Lee 1 and Jun Wada 2
Bibliographic info:
23rd AIVC and EPIC 2002 Conference (in conjunction with 3rd European Conference on Energy Performance and Indoor Climate in Buildings) "Energy efficient and healthy buildings in sustainable cities", Lyon, France, 23-26 October 2002

Ventilation is one of the most important measures to dilute indoor air pollutants. In order to maintain a clean indoor air environment, not only the total ventilation rate of the building but also the distribution of outdoor air to each area must be taken into consideration. A performance evaluation of the combined system of air supply from the crawl space and hybrid exhaust ventilation with a small fan and damper has been investigated. This investigation was undertaken over a heating season using a full-scale test house. The ventilation airflow rate and the distribution to each room of the test house were measured by the constant concentration method. The influence of indoor-outdoor temperature difference on ventilation rate was also analyzed. Additionally, the performance of this system was investigated by numerical analysis. The results revealed the performance of this ventilation system.