在一个养猪室中安装并评估了一个原型单流空气动力除尘器，该除尘器是一种从气流中分离灰尘的空气动力装置。对影响粉尘粒径和粉尘分离效率的三个因素进行了评估:除尘器室的长度、除尘器室内的风速以及出口风管R3与内风管R1的比值。单流空气动力除尘器有效降低了空气中的粉尘浓度。对于1.0µm到2.0µm的颗粒，粉尘分离效率在7%到20%之间变化；对于4.0µm到5.0µm的颗粒，粉尘分离效率在30%到67%之间变化；对于大于5µm的颗粒，粉尘分离效率在40%到80%之间变化。R3到R13的半径比显著影响粉尘分离效率。在三个半径比（0.7、0.9和1.15）中，在3 m/s和6 m/s（9）的空气速度下，0.9的除尘效率最高。 8英尺/秒和19.7英尺/秒）。有人建议，R3与R1的比例应设计为接近统一。增加切向风速并不一定能提高粉尘分离效率，因为湍流强度随着切向风速的增加而增加，从而降低了粉尘分离效率。单位:双引文:研讨会，ASHRAE交易，1998年，第104卷，pt。1A，旧金山

A prototype uniflow aerodynamic deduster, a device aerodynamically separating dust from airstream, was installed and evaluated in a swine nursery room. Three factors affecting dust particle cut-size and dust separation efficiency were evaluated: the length of the deduster chamber, air velocity in the deduster chamber, and the ratio of the outlet duct R3 to the inner duct R1. The uniflow aerodynamic deduster effectively reduced the dust concentration in the air. The dust separation efficiency varied from 7% to 20% for particles of 1.0 µm to 2.0 µm, 30% to 67% for particles of 4.0 µm to 5.0 µm, and 40% to 80% for particles larger than 5 µm. The radius ratio of R3 to R1significantly affected the dust separation efficiency. Of the three radius ratios (0.7, 0.9, and 1.15), 0.9 gave the highest dust separation efficiency at air velocities of 3 m/s and 6 m/s (9.8 ft/s and 19.7 ft/s). It was suggested that the ratio R3 to R1 should be designed close to unity. Increasing the tangential air velocity did not always increase the dust separation efficiency because the turbulence intensity increased with the tangential air velocity and, thus, reduced the dust separation efficiency.Units: Dual