Table 1 Ductwork Classification and Air Leakage Limits
(標(biāo)準(zhǔn)DW144 14頁(yè))
Duct pressure class Static pressure limit Maximum air
Duct pressure class velocity(m/s) Air leakage limits litres per second per square metre of duct surface area
Positive (Pa) Negative(Pa)
Low-pressure – Class A 500 500 10 0.027 x p0.65
Medium-pressure – Class B 1000 750 20 0.009 x p0.65
High-pressure – Class C 200 750 40 0.003 x p0.65
中華人民共和國(guó)行業(yè)標(biāo)準(zhǔn)通風(fēng)管道施工技術(shù)規(guī)程(51頁(yè))
JGJ141-2004
J363-2004
表5.2.10-3 圓形風(fēng)管允許漏風(fēng)量
壓力(Pa) 允許漏風(fēng)量[ m3/(h.m2)
低壓系統(tǒng)風(fēng)管(P≤500 Pa) ≤0.0528 p0.65
中壓系統(tǒng)風(fēng)管(500<P≤1500 Pa) ≤0.0176 p0.65
高壓系統(tǒng)風(fēng)管(1500<P≤3000 Pa) ≤0.0117 p0.65