Equation of ventilation efficiency in thermally controlled ventilation rooms

Analyses the factors influencing air temperature distribution in thermally controlled ventilation rooms. Obtains two kinds of quantity group based on the similitude principle, i.e. the dimensionless similarity criterion and the dimensional thermal stratification height. Presents the equation of the characteristics of air vertical temperature distribution using the mean dimensionless excess temperature and ventilation efficiency as undetermined group and the other groups as determined ones. Concludes a concrete form of the criterion equation of ventilation efficiency by the regression analysis of the experimental and numerical simulation data in literatures.