Numerical comparative analysis of hybrid ventilation system and single fresh air system

A hybird ventilation system is put forward in this paper. Numerical comparative analysis has been made between hybird ventilation system and fresh air system in order to obtain the performance of the hybird ventilation system. Simulations are carried out in a hotel based on the tracer gas decay method. Comparing detailed analysis results, a comprehensive discussion of indoor air temperature and contaminant concentration distribution is presented. Comparative results show that the hybird ventilation system can provide a high level of indoor air quality and save energy in the case of achieving the same effect.