孔板流量計計算方法及參考系數(五)

表-4實際孔板流量特性系數K值表

管徑

D

(毫米)

m

a₀

K

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

0.55

0.6

0.65

0.7

100

a₀

K

0.6090

0.0578

0.6117

0.1161

0.6170

0.1755

0.6238

0.2366

0.6327

0.3001

0.6428

0.3547

0.6541

0.4231

0.6690

0.4965

0.6850

0.5736

0.7050

0.6576

0.7270

0.7461

0.7520

0.8436

0.7815

0.9513

0.8170

0.0726

125

a₀

K

0.6078

0.0901

0.6105

0.1810

0.6160

0.2740

0.6223

0.3690

0.6310

0.4677

0.6411

0.5703

0.6524

0.6770

0.6675

0.7917

0.6835

0.9120

0.7032

1.0245

0.7252

1.1826

0.7500

1.3343

0.7794

1.5021

0.8145

1.6905

150

a₀

K

0.6067

0.1293

0.6093

0.2602

0.6150

0.3939

0.6209

0.5302

0.6294

0.6718

0.6394

0.8190

0.6506

0.9722

0.6660

1.1374

0.6820

1.3103

0.7015

1.4976

0.7235

1.6990

0.7480

1.9162

0.7773

2.1572

0.8120

2.4268

175

a₀

K

0.6055

0.1760

0.6081

0.3534

0.6134

0.5347

0.6195

0.7200

0.6277

0.9120

0.6377

1.1118

0.6488

1.3197

0.6645

1.5447

0.6805

1.7800

0.6998

2.0334

0.7218

2.3071

0.7460

2.6012

0.7751

2.9279

0.8095

3.2756

200

a₀

K

0.6043

0.2294

0.6069

0.4607

0.6119

0.6979

0.6180

0.9382

0.6260

1.1879

0.6360

1.4483

0.6470

1.7189

0.6630

2.0130

0.6790

2.3193

0.6980

2.6491

0.7200

3.0058

0.7440

3.3884

0.7730

3.8138

0.8070

4.2651