THE EXPERIMENTAL AND SIMULATION OF THE INFLUENCE O

Water-cooled ceiling panels are mostly used in office buildings for its better thermal comfort and energy conservation. The experiment without fan ventilation was made in a real-size office with a water-cooled ceiling panel, which is built up aluminum panel and polyethylene pipe into. One aim of experiment was to find the vertical distribution of the air temperature. It is found that the vertical gradient of air temperature within 0.2m from the panel and 0.5m form floor surface varied much quickly, and the gradient in other zone is close to zone. In order to analyze the thermal performance of this system, a model was developed and validated against exiting experimental data. A reasonable agreement shows that this model is possible to simulate the cooled ceiling systems.