Flow Calculator

  • June 2020
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COEFFICIENT DE PERTE DE CHARGE APPLICABLE SUR PORTE-RAMPE

Coeff. nb. de Rampes 1.000 0.440 0.380 0.365 0.359 0.355 0.350 0.345 0.343 0.338

1 5 10 15 20 25 30 40 50 100

0.4

PRESSION D'ENTREE ( BAR ) 0.5 0.55 0.6 0.7 0.8

0.9

1

1.1

0.040

0.050

0.055

0.060

0.070

0.080

0.090

0.100

0.110

0.091

0.114

0.125

0.136

0.159

0.182

0.205

0.227

0.250

0.105

0.132

0.145

0.158

0.184

0.211

0.237

0.263

0.289

0.110

0.137

0.151

0.164

0.192

0.219

0.247

0.274

0.301

0.111

0.139

0.153

0.167

0.195

0.223

0.251

0.279

0.306

0.113

0.141

0.155

0.169

0.197

0.225

0.254

0.282

0.310

0.114

0.143

0.157

0.171

0.200

0.229

0.257

0.286

0.314

0.116

0.145

0.159

0.174

0.203

0.232

0.261

0.290

0.319

0.117

0.146

0.160

0.175

0.204

0.233

0.262

0.292

0.321

0.118

0.148

0.163

0.178

0.207

0.237

0.266

0.296

0.325

Calcul du Débit en fonction du Diamètre Intérieur et de la vitesse Diamètre Intérieur mm 67 Vitesse en mètre/sec 2.5 ??? Débit m3/hr ??? = 31.73 Calcul de la Vitesse en fonction du Débit et du Diamètre Intérieur Diamètre Intérieur mm 23 Débit en m3/hr 3 ??? Vitesse mètre/sec ??? = 2.01 Calcul du Diamètre Intérieur en fonction du Débit et de la Vitesse Débit en m3/hr 3 Vitesse en mètre/sec 2 ??? Diamètre Intérieur mm ??? = 23 Pertes de Charge dans les Principales et Porte-rampes Débit en m3/hr 35 Diamètre Intérieur mm 100 Longueur en mètres 300 Pertes de Charge PVC ou PE (bar) ??? = 0.406 Calcul longueur du tubing pour obtenir la PdC souhaitée Perte de Charge souhaitée (mètre) 8 Débit en lites par heure 340 Diamètre Intérieur mm 6 Longueur du tubing (mètres) ??? = 2.88

Maximum 6 mm ID recommandé

Source of the friction loss equations : CEMAGREF(Le Tholonet - France) Pertes de Charge dans tubes P.E. : Pertes de Charge dans tubing :

∆Hbar = ( Lm* 0.0478)* Φmm ∧ −4.75* Ql / hr ∧ 175 . ∆Hbar = 0.303* Lm∧ 0.662* Φmm ∧ −4.432* Ql / hr ∧ 1804 .

aximum 6 mm ID recommandé

∧ −4.75* Ql / hr ∧ 175 . Φmm ∧ −4.432* Ql / hr ∧ 1804 .

Calculate the Flow according to the Diameter and the velocity Internal diameter mm 63 Velocity meter/sec 2.5 ??? Flow m3/hr ??? = 28.06 Calculate the Velocity according to the Flow and the int. Diameter Internal diameter mm 23 Flow m3/hr 3 ??? Velocity meter/sec ??? = 2.01 Calculate the Internal Diameter according to the Flow and the Velocity Flow m3/hr 3 Velocity meter/sec 2 ??? Internal diameter mm ??? = 23 Friction losses in the main pipes and submains Flow m3/hr 68 Internal diameter mm 125 Length meter 100 Friction losses PVC or PE (bar) ??? = 0.150 Calculate the length of a restrictor to achieve target friction losses Friction losses targeted (meter) 8 Flow in liter per hour 340 Internal diameter mm 6 Maximum 6 mm ID recommended Length of the restrictor (meters) ??? = 2.88

Source of the friction loss equations : CEMAGREF(Le Tholonet - France) Friction losses in P.E. pipes : ∆Hbar = ( L m* 0.0478)* Φmm ∧ −4.75* Ql / hr ∧ 175 . Friction losses in restrictors : ∆Hbar = 0.303* Lm∧ 0.662* Φmm ∧ −4.432* Ql / hr ∧ 1804 .

Ql / hr ∧1804 .

COMPOUND MANIFOLD FRICTION LOSS COEFFICIENT Coeff. nb. of laterals 1.000 0.440 0.380 0.365 0.359 0.355 0.350 0.345 0.343 0.338

1 5 10 15 20 25 30 40 50 100

0.4

WORKING INLET PRESSURE ( BAR ) 0.5 0.55 0.6 0.7 0.8 0.9

1

1.1

0.040

0.050

0.055

0.060

0.070

0.080

0.090

0.100

0.110

0.091

0.114

0.125

0.136

0.159

0.182

0.205

0.227

0.250

0.105

0.132

0.145

0.158

0.184

0.211

0.237

0.263

0.289

0.110

0.137

0.151

0.164

0.192

0.219

0.247

0.274

0.301

0.111

0.139

0.153

0.167

0.195

0.223

0.251

0.279

0.306

0.113

0.141

0.155

0.169

0.197

0.225

0.254

0.282

0.310

0.114

0.143

0.157

0.171

0.200

0.229

0.257

0.286

0.314

0.116

0.145

0.159

0.174

0.203

0.232

0.261

0.290

0.319

0.117

0.146

0.160

0.175

0.204

0.233

0.262

0.292

0.321

0.118

0.148

0.163

0.178

0.207

0.237

0.266

0.296

0.325

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