Numerical comparison of airborne particles deposition and dispersion in radiator and floor heating systems

摘要

Many studies have been shown the advantage of low-energy heating systems, such as floor heating system in comparison with high-energy consuming systems, such as radiator heating system. The adoption of these energy-efficient heating systems still requires the provision of acceptable indoor air quality. In this research, three-dimensional comparison of deposition and dispersion of airborne particles in two radiator and floor heating systems is investigated numerically by an Eulerian-Lagrangian method. In an attempt to provide such data, the deposition of solid particles ranging from 0.3 to 10 pm is calculated and the main goal is to survey the removal efficiency of these two heating systems. The model validation is performed through result comparisons with published data from literatures. The results indicate that deposition ratio of particles is higher in radiator heating system. Furthermore, the numerical results show that the floor and radiator heating systems trend to deposit the suspended particles on the ceiling and on the floor, respectively.