Abstract: Uses CFD to establish air-conditioner airflow simulation model, and evaluate the refrigeration comfort of the up air-outlet, and the evaluation model error of the wind speed simulation results and experiments in different conditions have been found within 5%. Analysis of the upper air outlet height and its airflow blowing angle, the upper air outlet height is 180 mm, and the airflow is blown out of 11°, wind speed of the upper area of human body is the highest. After the comparison of comfort experiment, it was found that the air conditioner with the upper air-outlet draft sensation and temperature hierarchical phenomenon is not obvious, which is good for the thermal comfort. The results is helpful for the research on air conditioners.

Key words: Air conditioner, Air-outlet, Refrigeration comfort, Draft sensation