Steam in William James Hall

1
Steam in William James Hall

• By Cami and Joe

http//www.armintl.com/products/traps/pdf/Stmbasic
s.pdf
2
Steam in the Building

• Arrives in High Pressure Line
• Self-Adjusting Spence Valve admits required
  steam amount, lowers steam pressure

• Two Systems Reheat (AC2 or core) and Induction
  (AC1 or perimeter)

http//www.deas.harvard.edu/courses/es96/spring200
3/data/tour/photos/FrameSet.htm
3
Steam Use in the Building

• Single Cadillac Condensate Meter

• 100 of Steam used for Heating Purposes
• Serves 3 Steam Coils in the
  Air Handlers (one Reheat, two Induction)

http//www.deas.harvard.edu/courses/es96/spring200
3/data/tour/photos/FrameSet.htm
4
Steam Use cont

• - Supplies preheated air to the Core and
  Perimeter
• -Mixed with fresh and recirculated air to
  produce air at desired temperature
• Utilized by Converters used to heat the hot
  water for both systems
• -Discharge Water Temp determined by Siemens
  System

5
Steam Charts
Utilities Rate 18/MMBtu

• Cost determined by square footagenot by how much
  steam used

6
Steam Demand

• Heating Degree Day (65 - Avg. Temp)
• Degree days can be used to assess demand

• By month okay correlation
• Over past decade heating degree days constant,
  but steam usage not???

7
Things to Think About

• Steam Traps Drains Condensate from steam line
  bottom
• Thermal Shock
• Air CO2 Removal
• Inefficient Trap could lead to potential problems

http//www.armintl.com/products/traps/pdf/Stmbasic
s.pdf
http//www.speedwrap.com/images/trap.jpg
8
More Things...

• Corrosion
• CO2 combines with Condensate to form Carbonic
  Acid
• Oxidation expedites this process
• Leads to steam leaks, which cost

http//www.armintl.com/products/traps/pdf/Stmbasic
s.pdf
9
Even More Things...

• Insulation
• Can reduce energy losses by 90
• Frequently damaged (by water, etc.) or is removed
  during repairs
• Helps ensure proper pressure at equipment

10
Conclusions

• Steam is important for heating purposes in
  William James
• Improving steam efficiency
• Can measure based on condensate leaving the
  building