Single Stack System EN10 100 NEGSSAAVS This presentation

EN-10 -100 -NEG-SS-AAVs 17 System dimensions 26 16 29 25 Pipes 1, 2, 5,

Single stack with AAVs 17 26 16 29 25 27 15 24 28 14

Trap response to pressure fluctuations 17 26 16 29 25 27 15 24 28

Water seal retention 17 26 16 29 25 27 15 24 28 14 23

Air flow rates at entry and exit Air in 17 26 16 29 25

Air flow rates at entry and exit 17 26 16 29 25 27 15

End of presentation This presentation has illustrated the following; • The changing nature of

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Single Stack System EN-10 -100 -NEG-SS-AAVS This presentation will illustrate the following; • The changing nature of the pressure profile in a stack as a result of appliance discharges • The effects of pressure fluctuations in the stack on trap seal response and retention. • The airflow paths within the system

EN-10 -100 -NEG-SS-AAVs 17 System dimensions 26 16 29 25 Pipes 1, 2, 5, 6, 11, 12, 13, 14, 15, 16, 17 Are 3 m long 100 mm diameter 27 24 14 23 Pipes 4, 21, 25 are 2 m long 100 mm diameter 15 28 13 22 12 21 32 Pipes 2, 7, 8, 9, 18, 19, 20, 22, 23, 24, 26 are 0. 25 m long and 100 mm diameter 30 11 31 20 10 19 Trap seals are 50 mm 6 4 9 trap 8 7 18 5 3 2 1 Single stack system

Water flow profile 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 Contributing Branch flows 18 5 3 2 1 Single stack system Pipe 24 1 l/s Pipe 23 0. 2 l/s Pipe 22 1 l/s Pipe 20 1 l/s Pipe 18 1 l/s Pipe 4 1 l/s

Single stack with AAVs 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Single stack system Pressure profile in the stack

Pressure profile 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Single stack system 0 2 4 6 8 Time (s) 10

Pressure profile 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Single stack system 0 2 4 6 Time (S) 8 10

Pressure profile 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Single stack system 0 2 4 6 8 Time (s) 10

Trap response to pressure fluctuations 17 26 16 29 25 27 15 24 28 14 23 13 22 12 Trap response 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Single stack system

Trap response to pressure fluctuations 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Appliance side Single stack system System side

Water seal retention 17 26 16 29 25 27 15 24 28 14 23 13 22 12 Trap retention 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Single stack system

Water seal retention 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Single stack system Trap retention

Air flow rates at entry and exit Air in 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Air to sewer Single stack system Air flow in through AAV

Air flow rates at entry and exit 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Air to sewer Single stack system

Air flow rates at entry and exit Air in 17 26 16 29 25 24 0 14 10 23 13 22 0 12 21 32 30 11 31 20 6 4 9 trap 8 7 -10 -20 10 19 Air flow rate (l/s) 27 15 28 18 -30 -40 5 3 2 1 Single stack system -50 2 4 6 8 10

Air flow rates at entry and exit Air in 17 26 16 29 25 27 15 24 28 14 23 13 22 12 21 32 30 11 31 20 10 19 6 4 9 trap 8 7 18 5 3 2 1 Air to sewer Single stack system

End of presentation This presentation has illustrated the following; • The changing nature of the pressure profile in a stack due to water discharge • The effects of pressure fluctuations in the stack on trap seal response and retention. • The airflow paths within the system Return to main menu