13 - CAHIER TECHNIQUE
7/04/10
12:03
Page 27
> Pool Builder’s Charts
8. Calculation rules for the regular water recycle flow-rate in public swimming pools : Recycle flowrate expressed in m3/h : - For a paddling pool: Volume x 2 - For a diving section: Volume x 0.125 - Pool sections with a depth of up to 1.5m: Volume x 0.667 - Pool sections with a depth greater than 1.5m: Volume x 0.25 Adding up these values yields the nominal statutory minimum recycle flowrate (m3/h)
9. Flow-rate in m3/h with respect to fluid velocity through filter and filter diameter : Ă˜ filter (mm)
400 500 600 520 640 760 900 1050 1200 1400 1600 1800 2000 2200 2350 2400 2500 2800 3000
Area (m2)
0,13 0,20 0,28 0,21 0,32 0,45 0,64 0,87 1,13 1,54 2,01 2,54 3,14 3,80 4,34 4,52 4,91 6,15 7,07
Flow-rate (m3/h) at 20 m3/h/m2
Flow-rate (m3/h) at 30 m3/h/m2
Flow-rate (m3/h) at 40 m3/h/m2
Flow-rate (m3/h) at 50 m3/h/m2
2,5 3,9 5,7 4,25 6,43 9,07 12,72 17,3 22,6 30,8 40,2 50,9 62,8 76,0 86,7 90,4 98,1 123,1 141,3
3,8 5,9 8,5 6,37 9,65 13,60 19,08 26,0 33,9 46,2 60,3 76,3 94,2 114,0 130,1 135,6 147,2 184,6 212,0
5,0 7,9 11,3 8,49 12,86 18,14 25,43 34,6 45,2 61,5 80,4 101,7 125,6 152,0 173,4 180,9 196,3 246,2 282,6
6,3 9,8 14,1 10,61 16,08 22,67 31,79 43,3 56,5 76,9 100,5 127,2 157,0 190,0 216,8 226,1 245,3 307,7 353,3
Bolt characters : recommended values
10. Recommended velocity to validate the pipe cross section : Do not take the pump suction and discharge diameters into account to validate the pipe diameter.
Validation of pipe diameter at suction end We generally take a fluid velocity in the pipe in the order of 1.5 m/s. table 4
Validation of pipe diameter at discharge end We generally take a fluid velocity in the pipe in the order of 2.0 m/s. table 4
158
SOMMAIRE - SUMMARY - INHALTSVERZEICHNIS