Thermal environment characteristics of an enhanced-convection overhead radiant floor heating room

For the proposed enhanced-convection overhead radiant floor heating system, studies the surface temperature and heat flux distribution of the floor and the thermal environment characteristics of the heating room by numerical simulation, and verifies the reliability of the model by the experimental study. The results show that the surface temperature and heat flux distribution law of the enhanced-convection overhead floor are mainly affected by the number, shape and position of floor holes. When the water temperature of the coil is increased by 10 ℃, the surface temperature of the floor is increased by about 2 ℃, the average indoor temperature is increased by about 2.8 ℃, and the surface heat flux density of the overhead floor is increased by about 15 W/m2. When the coil spacing is reduced by 100 mm, the average indoor temperature is increased by about 1.8 ℃. The wind speed of the heat source activity area in the middle of the room is 0.11 to 0.18 m/s, which can meet the comfort demand of the workplace occupants.