某水平圆形热源(散热面直径B=l.Om)的对流散热量为Q=5.466kj/s,拟在热源上部1.0m处设直径为D=1.2m的圆伞形接受罩排除余热。设室内有轻微的横向气流干扰,则计算排风量应是下列何项?(罩口扩大面积的空气吸入流速v=0.5m/s)
A.1001~1200m3/h B.1201~1400m3/h C.1401~1600m3/h D.1601~1800m3/h正确答案D
某水平圆形热源(散热面直径B=l.Om)的对流散热量为Q=5.466kj/s,拟在热源上部1.0m处设直径为D=1.2m的圆伞形接受罩排除余热。设室内有轻微的横向气流干扰,则计算排风量应是下列何项?(罩口扩大面积的空气吸入流速v=0.5m/s)
A.1001~1200m3/h B.1201~1400m3/h C.1401~1600m3/h D.1601~1800m3/h正确答案D