Application of Hybrid Ventilation System in A Pig House – Study of Winter Case

This study introduces a hybrid ventilation (HBV) system in a pig house combining natural and partial pit mechanical ventilation (PPMV). The PPMV system is installed below the slatted floor with the capacity of 30% of the maximum ventilation rate. The proposed PPMV system can collect highly concentrated air and clean it in an economic approach so that odour emissions are abated. In this paper, the performance of HBV system in winter has been evaluated by analyzing the velocity and temperature distribution from CFD simulations, including the effects of heating capacity distribution, location of the heating system and outdoor temperatures.