由《流体输配管网》第51页,图2-3-1查得Rm=0.6 Pa/m
管3: l3=4.5m, Ms3=0.129 m3/s, 初定风速V3,0=3 m/s, A0=0.129/3=0.043 m2,
取a×b=420×110 mm, A=0.42×0.11=0.0462 m2, 实速V3=0.129/0.0462=2.79 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=223 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.62 Pa/m
管4: l4=3 .5m, Ms4=0.258 m3/s, 初定风速V4,0=4 m/s, A0=0.258/4=0.0645 m2,
取a×b=520×110 mm, A=0.52×0.11=0.0572 m2, 实速V4=0.258/0.0572=4.51 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=245 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=1.3 Pa/m
管5: l5=1.2 m, Ms5=0.387 m3/s, 初定风速V5,0=5 m/s, A0=0.387/5=0.0774 m2,
取a×b=630×110 mm, A=0.63×0.11=0.0693 m2, 实速V5=0.387/0.0693=5.58 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=264 mm, 由《流体输配管网》第51页,图2-3-1查得Rm=2 Pa/m 各管段局部阻力系数
管1:90o弯头1个,R=1.5D,h/b=200/110=1.82,由《实用通风空调风道计算法》查得ζ1=0.09 ζ=0.09
管2:渐缩管1个,A2/A1=0.0352/0.022=1.6,由《实用通风空调风道计算法》查得ζ1=0.08
分流三通1个,V2/V1=1.95/2.44=0.8,由《实用通风空调风道计算法》查得ζ2=0.02 ζ=ζ1+ζ2=0.08+0.02=0.1
管3:90o弯头1个,R=1.5D,h/b=420/110=3.82,由《实用通风空调风道计算法》查得ζ1=0.04 渐缩管1个,A2/A1=0.0462/0.0352=1.31,由《实用通风空调风道计算法》查得ζ2=0.05
分流三通1个,V2/V1=2.44/2.79=0.87,由《实用通风空调风道计算法》查得ζ3=0.01 ζ=ζ1+ζ2+ζ3=0.04+0.05+0.01=0.1
管4:渐缩管1个,A2/A1=0.0572/0.0462=1.24,由《实用通风空调风道计算法》查得ζ1=0.04
分流三通1个,V2/V1=2.79/4.51=0.6,由《实用通风空调风道计算法》查得ζ2=0.06 ζ=ζ1+ζ2=0.04+0.06=0.1
管5:渐缩管1个,A2/A1=0.0693/0.0572=1.21,由《实用通风空调风道计算法》查得ζ1=0.04
分流三通1个,V2/V1=4.51/5.58=0.8,由《实用通风空调风道计算法》查得ζ2=0.02 ζ=ζ1+ζ2=0.04+0.02=0.06 系统三(103)
103共有6个侧送风口,每个送风口的送风量Ms=0.78/6=0.13 m3/s
管1: l1=4.5 m, Ms1=0.13 m3/s, 初定风速V1,0=2.5 m/s, A0=0.13/2.5=0.052 m2, 取a×b=250×200 mm, A=0.25×0.2=0.05 m2, 实速V1=0.13/0.05=2.6 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=244 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.48 Pa/m
管2: l2=4.5 m, Ms2=0.26 m3/s, 初定风速V2,0=2.5 m/s, A0=0.26/2.5=0.104 m2, 取a×b=400×200 mm, A=0.4×0.2=0.08 m2, 实速V2=0.26/0.08=3.25 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=305 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.52 Pa/m 管3: l3=16.3 m, Ms3=0.39 m3/s, 初定风速V3,0=3 m/s, A0=0.39/3=0.13 m2,
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取a×b=400×320 mm, A=0.4×0.32=0.128 m2, 实速V3=0.39/0.128=3.05 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=390 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.32 Pa/m
管4: l4=4.5m, Ms4=0.52 m3/s, 初定风速V4,0=3 m/s, A0=0.52/3=0.173 m2,
取a×b=500×320 mm, A=0.5×0.32=0. 16 m2, 实速V4=0.52/0. 16=3.25 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=435 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.22 Pa/m
管5: l5=4.5 m, Ms5=0.65 m3/s, 初定风速V5,0=3 m/s, A0=0.65/3=0.217 m2,
取a×b=630×320 mm, A=0.63×0.32=0.2016 m2, 实速V5=0.65/0.2016=3.22 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=484 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.19 Pa/m
管6: l6=1 m, Ms6=0.78 m3/s, 初定风速V6,0=3 m/s, A0=0.78/3=0.26 m2,
取a×b=800×320 mm, A=0.8×0.32=0.256 m2, 实速V6=0.78/0.256=3.05 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=539 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.16 Pa/m 各管段局部阻力系数
管1:90o弯头1个,R=1.5D,h/b=250/200=1.25,由《实用通风空调风道计算法》查得ζ1=0.14 ζ=0.14
管2:渐缩管1个,A2/A1=0.08/0.05=1.6,由《实用通风空调风道计算法》查得ζ1=0.1
分流三通1个,V2/V1=2.6/3.25=0.8,由《实用通风空调风道计算法》查得ζ2=0.02 ζ=ζ1+ζ2=0.1+0.02=0.12
管3:渐缩管1个,A2/A1=0.128/0.08=1.6,由《实用通风空调风道计算法》查得ζ1=0.1
分流三通1个,V2/V1=3.25/3.05=1.07,由《实用通风空调风道计算法》查得ζ2=0
90o弯头2个,R=1.5D,h/b=400/320=1.25,由《实用通风空调风道计算法》查得ζ3=0.14 ζ=ζ1+ζ2+ζ3×2=0.1+0.14×2=0.38
管4:渐缩管1个,A2/A1=0. 16/0.128=1.25,由《实用通风空调风道计算法》查得ζ1=0.05
分流三通1个,V2/V1=3.05/3.25=0.94,由《实用通风空调风道计算法》查得ζ2=0.01 ζ=ζ1+ζ2=0.05+0.01=0.06
管5:渐缩管1个,A2/A1=0.2016/0.16=1.26,由《实用通风空调风道计算法》查得ζ1=0.05
分流三通1个,V2/V1=3.25/3.22=1.01,由《实用通风空调风道计算法》查得ζ2=0 ζ=ζ1+ζ2=0.05
管6:渐缩管1个,A2/A1=0.256/0.2016=1.27,由《实用通风空调风道计算法》查得ζ1=0.05 分流三通2个,V2/V1=3.22/3.05=1.06,由《实用通风空调风道计算法》查得ζ2=0 ζ=ζ1+ζ2=0.05
系统四(201,202,203,204,205,207)
201有5个侧送风口,每个风口送风量Ms=1.39/5=0.278 m3/s 202,203各有1个侧送风口,每个风口送风量Ms=0.2275 m3/s 204有2个侧送风口,每个风口送风量Ms=0.454/2=0.227 m3/s
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205有2个侧送风口,每个风口送风量Ms=0.5325/2=0.27 m3/s 207有3个侧送风口,每个风口送风量Ms=0.328/3=0.109 m3/s 最不利环路为:1-2-3-4-5-6-7-8-9
管1:l1=3 m, Ms1=0.27 m3/s, 初定风速V1,0=3 m/s, A0=0.27/3=0.09 m2,
取a×b=320×320 mm, A=0.32×0.32=0.1024 m2, 实速V1=0.27/0.1024=2.64 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=350 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.25 Pa/m
管2:l2=4.8 m, Ms2=0.54 m3/s, 初定风速V2,0=3 m/s, A0=0.54/3=0.18 m2,
取a×b=450×320 mm, A=0.45×0.32=0.144 m2, 实速V2=0.54/0.144=3.75 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=413 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.48 Pa/m
管3:l3=3 .6m, Ms3=0.767 m3/s, 初定风速V3,0=4 m/s, A0=0.767/4=0.192 m2,
取a×b=630×320 mm, A=0.63×0.32=0.2016 m2, 实速V3=0.767/0.2016=3.8 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=484 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.26 Pa/m
管4:l4=3 .6m, Ms4=0.994 m3/s, 初定风速V4,0=4 m/s, A0=0.994/4=0.2485 m2, 取a×b=630×400 mm, A=0.63×0.4=0.252 m2, 实速V4=0.994/0.252=3.94 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=545 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.25 Pa/m
管5:l5=3.6 m, Ms5=1.33 m3/s, 初定风速V5,0=4 m/s, A0=1.33/4=0.3325 m2, 取a×b=800×400 mm, A=0.8×0.4=0.32 m2, 实速V5=1.33/0.32=4.16 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=609 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.2 Pa/m
管6:l6=3.6 m, Ms6=1.67 m3/s, 初定风速V6,0=4 m/s, A0=1.67/4=0.4175 m2, 取a×b=800×400 mm, A=0.8×0.4=0.32 m2, 实速V6=1.67/0.32=5.2 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=609 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.3 Pa/m
管7:l7=3 .6m, Ms7=2.057 m3/s, 初定风速V7,0=4 m/s, A0=2.057/4=0.51 m2, 取a×b=1000×400 mm, A=1×0.4=0.4 m2, 实速V7=2.057/0.4=5.14 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=674 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.32 Pa/m
管8:l8=2.7 m, Ms8=2.335 m3/s, 初定风速V8,0=4 m/s, A0=2.335/4=0.584 m2, 取a×b=1000×400 mm, A=1×0.4=0.4 m2, 实速V8=2.335/0.4=5.84 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=674 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.45 Pa/m
管9:l9=3.5 m, Ms9=3.16 m3/s, 初定风速V9,0=6 m/s, A0=3.16/6=0.527 m2, 取a×b=1250×400 mm, A=1.25×0.4=0.5 m2, 实速V9=3.16/0.5=6.32 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=744 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.32 Pa/m 管10:l10=3.45 m, Ms10=0.278 m3/s, 初定风速V10,0=4 m/s, A0=0.278/4=0.07 m2,
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取a×b=320×320 mm, A=0.32×0.32=0.1024 m2, 实速V10=0.278/0.1024=2.71 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=350 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.25 Pa/m
管11:l11=3.6 m, Ms11=0.556 m3/s, 初定风速V11,0=3 m/s, A0=0.556/3=0.185 m2, 取a×b=500×320 mm, A=0.5×0.32=0.16 m2, 实速V11=0.556/0.16=3.48 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=435 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.27 Pa/m
管12:l12=0.9 m, Ms12=0.834 m3/s, 初定风速V12,0=3 m/s, A0=0.834/3=0.278 m2, 取a×b=500×320 mm, A=0.5×0.32=0.16 m2, 实速V12=0.834/0.16=5.21 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=435 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.6 Pa/m
管13:l13=2.4 m, Ms13=0.109 m3/s, 初定风速V13,0=3 m/s, A0=0.109/3=0.036 m2, 取a×b=200×200 mm, A=0.2×0.2=0.04 m2, 实速V13=0.109/0.04=2.73 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=219 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.58 Pa/m 各管段局部阻力系数
管1:90o弯头1个,R=1.5D,h/b=320/320=1,由《实用通风空调风道计算法》查得ζ1=0.175 ζ=0.175
管2:渐缩管1个,A2/A1=0.144/0.1024=1.4,由《实用通风空调风道计算法》查得ζ1=0.07
分流三通1个,V2/V1=2.64/3.75=0.7,由《实用通风空调风道计算法》查得ζ2=0.03 ζ=ζ1+ζ2=0.07+0.03=0.1
管3:渐缩管1个,A2/A1=0.2016/0.144=1.4,由《实用通风空调风道计算法》查得ζ1=0.07
分流三通1个,V2/V1=3.75/3.8=0.99,由《实用通风空调风道计算法》查得ζ2=0.001 ζ=ζ1+ζ2=0.07+0.001=0.071
管4:渐缩管1个,A2/A1=0.252/0.2016=1.25,由《实用通风空调风道计算法》查得ζ1=0.05
分流三通1个,V2/V1=3.8/3.94=0.96,由《实用通风空调风道计算法》查得ζ2=0.004 ζ=ζ1+ζ2=0.05+0.004=0.054
管5:渐缩管1个,A2/A1=0.32/0.252=1.27,由《实用通风空调风道计算法》查得ζ1=0.05
分流三通2个,V2/V1=3.94/4.16=0.95,由《实用通风空调风道计算法》查得ζ2=0.005 ζ=ζ1+ζ2×2=0.05+0.005×2=0.06
管6:分流三通2个,V2/V1=4.16/5.2=0.8,由《实用通风空调风道计算法》查得ζ1=0.02
ζ=ζ1×2=0.02×2=0.04
管7:渐缩管1个,A2/A1=0.4/0.32=1.25,由《实用通风空调风道计算法》查得ζ1=0.05
分流三通2个,V2/V1=5.2/5.14=1.01,由《实用通风空调风道计算法》查得ζ2=0 ζ=ζ1+ζ2=0.05
管8:分流三通1个,V2/V1=5.14/5.84=0.9,由《实用通风空调风道计算法》查得ζ1=0.01
ζ= 0.01
管9:90o弯头2个,R=1.5D,h/b=1250/400=3.125,由《实用通风空调风道计算法》查得ζ1=0.07
ζ=ζ1×2=0.07×2=0.14
管10:90o弯头1个,R=1.5D,h/b=320/320=1,由《实用通风空调风道计算法》查得ζ1=0.175
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ζ=0.175
管11:渐缩管1个,A2/A1=0.16/0.1024=1.56,由《实用通风空调风道计算法》查得ζ1=0.1
分流三通1个,V2/V1=2.71/3.48=0.78,由《实用通风空调风道计算法》查得ζ2=0.02 ζ=ζ1+ζ2=0.1+0.02=0.12
管12:分流三通1个,V2/V1=3.48/5.21=0.67,由《实用通风空调风道计算法》查得ζ1=0.05
ζ=0.05 管13:ζ=0 系统五(206)
206房间总送风量0.783 m3/s,采用两个风机盘管,每个风机盘管送风量Ms=0.783/2=0.3915 m3/s 共有8个送风口,每个送风口送风量Ms=0.783/8=0.098 m3/s
管1:l1=4.5 m, Ms1=0.098 m3/s, 初定风速V1,0=2.5 m/s, A0=0.098/2.5=0.0392 m2, 取a×b=320×120 mm, A=0.32×0.12=0.0384 m2, 实速V1=0.098/0.0384=2.55 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=208 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=0.78 Pa/m
管2:l2=6.2 m, Ms2=0.196 m3/s, 初定风速V2,0=3 m/s, A0=0.196/3=0.065 m2,
取a×b=420×120 mm, A=0.42×0.12=0.0504 m2, 实速V2=0.196/0.0504=3.89 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=234 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=1.1 Pa/m
管3:l3=4.5m, Ms3=0.294 m3/s, 初定风速V3,0=3 m/s, A0=0.294/3=0.098 m2,
取a×b=630×120 mm, A=0.63×0.12=0.0756 m2, 实速V3=0.294/0.0756=3.89 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=278 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=1.0 Pa/m
管4:l4=1.5m, Ms4=0.392 m3/s, 初定风速V4,0=4 m/s, A0=0.392/4=0.098 m2,
取a×b=630×120 mm, A=0.63×0.12=0.0756 m2, 实速V4=0.392/0.0756=5.2 m/s, 流量当量直径DL=1.3×(ab)0.625/(a+b)0.25=278 mm,
由《流体输配管网》第51页,图2-3-1查得Rm=1.8 Pa/m 各管段局部阻力系数
管1:90o弯头1个,R=1.5D,h/b=320/120=2.67,由《实用通风空调风道计算法》查得ζ1=0.07 ζ=0.07
管2:渐缩管1个,A2/A1=0.0504/0.0384=1.31,由《实用通风空调风道计算法》查得ζ1=0.04
分流三通1个,V2/V1=2.55/3.89=0.66,由《实用通风空调风道计算法》查得ζ2=0.05 ζ=ζ1+ζ2=0.04+0.05=0.09
管3:渐缩管1个,A2/A1=0.0756/0.0504=1.5,由《实用通风空调风道计算法》查得ζ1=0.05
分流三通1个,V2/V1=3.89/3.89=1,由《实用通风空调风道计算法》查得ζ2=0 ζ=ζ1+ζ2=0.05
管4:分流三通1个,V2/V1=3.89/5.2=0.75,由《实用通风空调风道计算法》查得ζ1=0.025
ζ=0.025
系统六(标准层)
标准层采用风机盘管加独立新风系统,每间客房2人,每个房间的新风量Mo=0.017 m3/s
40