Plumbing Supply Piping Planning Tool Minimizing Water Wasted
PIPING SYSTEMS DESTINED FOR FAILURE - World Plumbing
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PIPING SYSTEMS DESTINED FOR FAILURE
Transcript of PIPING SYSTEMS DESTINED FOR FAILURE - World Plumbing
PIPING SYSTEMS DESTINED FOR FAILURE
MEASUREMENT
PPR FAILURES
STRESS FATIGUE
ENTRAINED AIR
INCREASE IN MATERIAL FAILURE
FACTORS
MEDIA REPORTS
MEDIA REPORTS
MEDIA REPORTS
MEDIA REPORTS
MEDIA REPORTS
MEDIA REPORTS
MEDIA REPORTS
MEDIA REPORTS
MEDIA REPORTS
WHY NOW
?WHAT HAS CHANGED
EXPANSION CONTROL VALVE
1200 kPa
ECV
1200 kPa
TEMPERATURE MIXING VALVE
MIXING VALVE
AIR RELEIF VALVE
AIR RELIEF VALVE
INCREASED PRESSURE
AIR RELIEF VALVE
EXPANSION TANK
BACKFLOW
BACKFLOW
PRESSURE DROP
VSD PUMPS
VSD PUMPS
CYCLIC PRESSURES
VSD PUMPS
CYCLIC PRESSURES
PRESSURE REDUCING VALVE
PRV
CYCLIC PRESSURES
COMBINE ALL DEVICES TOGETHER
WHAT HAPPENS?
DAMAGING SYSTEM DYNAMICS
FIXED ONE PROBLEM
!ONLY TO CREATE ANOTHER
PRESSURE AIR
COMBINATION
AIR PRESSURE
AIR TEMPERATURE
AIR EXPANSION AT PRESSURE
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
80.00%
90.00%
100.00%
0 200 400 600 800 1000 1200 1400 1600
perc
enta
ge v
olum
e
kPa gauge pressure
Air volume under pressure
PRESSURE DROP
400kpa
AIR IN PIPES + RAPID PRESSURE DROP
EQUALS CAVITATION
SUMMARY
• COMPLEX FLUID DYNAMICS
• RANGE OF MODERN EQUIPMENT
• CHANGES IN SYSTEM DESIGN
• INCREASED INSTALLER ERROR
PIPING FAILURES ARE A COMBINATION
WE CAN’T SOLVE
PROBLEMSBY USING THE SAME KIND OF
THINKINGWE USED WHEN WE CREATED THEM
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