Performance optimization of coupled system of radiant cooling ceiling and fan based on CFD

The acoustical panel is used to solve the noise problem of the radiant ceiling cooling system, but it hinders the radiant heat transfer. This paper proposes to optimize the coupled system of radiant cooling ceiling and fan by adjusting the wind of the fan. Based on CFD simulation, the indoor air distribution, thermal comfort and heat transfer coefficient of the coupled system are discussed. The effects of the installation mode of the acoustical panel, fan speed and fan steering on the performance of the radiant ceiling are studied. The results show that the addition of the fan enhances the convection heat transfer coefficient and the total heat transfer coefficient of the ceiling. With the increase of fan speed, indoor air temperature and human thermal comfort evaluation index (PMV) decrease. The upward-blowing effect of the fan is better than the downward-blowing effect. The vertical installation of the acoustical panel is better than the horizontal installation.