Numerical Comparison of Airborne Particles Deposition and Dispersion in a Room with Different Heating Systems

Many studies have been shown the advantage of lowenergy heating systems. The adoption of these energyefficient heating systems still requires the provision of acceptable indoor air quality. In this research, comparison of deposition and dispersion of airborne particles in three different heating systems is investigated numerically by an Eulerian-Lagrangian method. In an attempt to provide such data, the deposition of solid particles ranging from 1 to 10 μm is calculated and the main goal is to survey the removal efficiency of these heating systems. The outdoor temperature is considered for the Sweden climate in winter and the Ashrae standard is used for the indoor air design temperature. The model validation is performed through result comparisons with published data from literatures. The results indicate that deposition ratio of particles is higher in wall heating system. Furthermore, the numerical results show that the floor heating system has a higher removal efficiency of particles from the outlet in comparison with other heating systems.

کلیدواژه ها:

Heating system ، Particle tracking ، Deposition