Hot Water and Steam

1
Hot Water and Steam

• Plumbing Systems
• CNST 305
• Environmental Systems 1
• Dr. Berryman

2
Hot Water Considerations

• Hot Water Burns People
• Hot water is corrosive

3
Hot Water Considerations

• Bacteria can breed (i.e. Legionella)
• Recirculation
• Recovery vs Storage

4
Hot Water Heaters

• Classified by fuel sources

5
Steam

• Phase change from water
• Liquid to gas
• Safety devices

6
Domestic Hot Water Heaters
7
Commercial Heaters

• Semi-Instantaneous
• Instantaneous
• Heat exchanger

8
Design Considerations for Hot/Cold Systems

• Noise
• Water Hammer (shock wave)
• Dampening/prevention devices
• Steam system start up

9
Design Considerations for Hot/Cold Systems

• Pressure loss
• Factors that affect pressure loss

10
Class Exercise

• A multi-story building has access to a water
  main. Ignoring friction, how many floors will
  this system effectively serve?
• Given
• 50 psi main
• 12 per floor
• Ignore affects of pipe and fitting friction

• Fixture requirements 25 psi for Flush Tank

11
Next Time

• Sizing Water Systems