With the improvement of people's living standards,the medical environment of patients and the working environment of medical workers in hospitals need to be improved urgently while improving the treatment services.However,the fan coil and fresh air system which is widely used in hospital buildings,especially in wards,shows temperature distribution,strong sense of blowing,noise and other problems which leads to the thermal comfort of indoor cannot be guaranteed.A high-quality air-conditioning system with low-flow-rate fan coil unit and independent dehumidification replacement of fresh air is developed for hospital wards.A CFD numerical model is established on the basis of the actual experimental platform.Then the proposed model was verified by comparing the simulation results with the experimental data.A new form of airflow organization which can not only effectively reduce the sense of blowing and noise indoor,but also avoid the shortcomings of traditional displacement ventilation,which is prone to temperature stratification and large vertical temperature difference while maintaining the setting temperature.
fan coildisplacement fresh airthermal comfortComputational Fluid Dynamics(CFD)