Research on the Dynamic Simulation Method of Air-Layer Integrated Ceiling Radiant Cooling Panel

The application of radiant cooling systems is limited due to the condensation problem and insufficient cooling capacity, especially in hot and humid climates. One solution to the problem, Air-layer Integrated Ceiling Radiant Cooling Panel (AiCRCP), was proposed with an infrared-transparent (IRT) membrane separating the radiant cooling surface from the space air. Therefore, a lower radiant temperature is reached when the IRT membrane surface temperature is kept higher than the dew point temperature without condensation. Different from conventional radiant systems, the cooling capacity of AiCRCP is improved and redistributed. Besides, control strategies of hybrid systems (combine air cooling and radiant cooling) are not suitable to the AiCRCP. In this research, a dynamic simulation method of AiCRCP was developed by integrating the heat transfer model with the transient simulation platform Trnsys. From the results, the integrated model was validated from AiCRCP heat transfer model and error was less than ± 2.5%. Based on this method, the dynamic characteristics of the thermal environment and energy performance can be investigated by dynamic simulation in further study.