A study on the control of a hybrid ventilation system using a test house

For that study, the performance of an hybrid ventilation system with a pressure difference sensor in the central exhaust duct has been evaluated through the field measurement. That ventilation system was installed on a detached test house.The infiltration airflow rates of each room were measured by the constant concentration method with SF6 tracer gas. The airflow rate of the exhaust duct was measured by the constant injection method using CO2 gas as a tracer and by the hot wire anemometer. The operating conditions of the supplemental fan and the damper of hybrid ventilation system were monitored.