Study on Air Conditioning Thermal Comfort with New-type Fan

D3 - Fan Performance (i)

The conventional floor standing air conditioning's inlet is in the bottom and it's outlet is in the top in cool mode and heat mode, it’s thermal comfort is not good, it is hard to supply the thermal air to the human’s knees below. It is difficult to meet the human’s comfort requirements for thermal feet and cool head. In order to improve the status, with new technology of wind tunnel of air conditioning, the conventional airflow field of floor standing air conditioning was changed to independent double-airflow field. The conventional static wind tunnel is changed to dynamic wind tunnel by fan. The new wind tunnel realizes the top air supply and the bottom air return for cool mode and the top air return and the bottom air supply for heat mode. It is realized by rotating propeller housing.The new wind tunnel supplies the thermal air to the human’s knees below directly, it improves the human thermal comfort, it increases the room’s temperature for 2-4 °C below 1.5 m height in heat mode, it improves the uniformity of the temperature field. The experiment data indicates that the nonuniformity coefficient of temperature of new air conditioning reduces about 70 percent. The new-type air conditioning improves the indoor air quality and realizes the energy conservation.