Geometric-parameter influence and orthogonal evaluation on the thermal environment for an impinging jet ventilation system inlet

Abstract

Numerical simulations are conducted to illustrate the geometric-parameter influences and orthogonal evaluation of heat removal effectiveness and dimensionless buoyant jet length scale for impinging jet ventilation system, after the full-scale measurements conduced. Two geometric parameters taken into consideration are the airflow inlet length, width and height from floor. Firstly, each geometric-parameter influence is investigated individually among its varying range while maintaining the other geometric parameters. Secondly, an orthogonal analysis is performed for evaluating the importance of each geometric-parameter on the thermal environment and thermal comfort performances.

Keywords

• Impinging jet ventilation system
• Heat removal effectiveness
• Buoyant jet length scale
• Orthogonal analysis