Indoor thermal environment improvement of floor radiant cooling

 In floor radiant cooling, the indoor air temperature field often occurs a large vertical temperature difference, which makes people feel uncomfortable with hot head and cold feet. In order to improve the uneven vertical temperature distribution in floor radiant cooling, adopts ceiling fan ventilation and fan coil side blowing ventilation to optimize the air distribution and improve the indoor temperature field and comfort. The experimental results show that compared with no ventilation, the indoor vertical temperature difference drops from about 5 ℃ to less than 1 ℃ with ventilation, which significantly improves the vertical indoor air temperature distribution. At the same supply water flow rate and temperature, compared with no ventilation and fan coil side blowing ventilation, ceiling fan ventilation leads the highest floor temperature, the lowest air temperature, the smallest vertical temperature difference, the most comfortable indoor thermal environment, with significant environmental quality improvement.