1、縮伸軟管摩擦阻力表:
2、鍍鋅板風(fēng)管摩擦阻力表:
說明:
(1)軟管采用荷蘭數(shù)據(jù)時,上述數(shù)據(jù)乘以下系數(shù):
Φ150x2; Φ200x1.8; Φ250x1.5; Φ300x1.3
(2)局部摩擦阻力:
(3)與散流器的摩擦阻力:
(4)保持風(fēng)速必須的動壓:
當(dāng)v=2m/s時, ΔP=2.4Pa; 當(dāng)v=3m/s時, ΔP=5.4Pa
當(dāng)v=4m/s時, ΔP=9.6Pa; 當(dāng)v=5m/s時, ΔP=15Pa
當(dāng)v=6m/s時, ΔP=21Pa。