Research On Regularity Of Ventilation Efficiency In Displacement Ventilation Room

Ventilation efficiency is one of the importment indicator to evaluate ventilation system performance. Through the study on ventilation efficiency, we can know it's effect factors and look for the path of elevating ventilation efficiency in order to improve indoors air quality and make economical use of energy.This paper use a meeting room with displacement ventilation as research object. Then, on the basis of thermal stratification and two-cell model theory, we set up mathematics model about ventilation efficiency and calculate it by programming using visual fortran computer language. On the foundation of calculation database ,we analyse effect factors of ventilation efficiency and it's variety regularity with these factors.When we set up mathematics model about ventilation efficiency,we make some assumptions.To verify the reasonable of these assumptions, a experiment about displacement ventilation was performed in meeting room of Xi'an SiLian Corporation. The result show that these assumptions are suitability.