The simulation model of hybrid radiant cooling floor and displacement ventilation air conditioning system was built and analyzed by software EnergyPlus. By comparing the simulation results and experimental data

it is shown that the simulated indoor air temperature and cooling capacity provided by radiant floor was ±7% deviated from the experimental data. Based on the model

with the change of supply air parameters or supply water parameters

the cooling capacity provided by radiant floor and displacement ventilation

surface temperature of radiant floor

indoor air average temperature

AUST temperature were obtained. Combined with the indoor thermal comfort model

when indoor thermal comfort index PMV varied between -0.5 and 0.5

the recommended supply air and supply water parameters were obtained to provide reference for engineering design and application.