|
Steam & Medium Temperature Hot Water Cogeneration System |
Chilled-Water System |
| Startup year |
- 1924: Original Central Utility Plant constructed. Coal fired boilers producing steam.
- 1967 to 1970: Central Utilities Plant expansion adds boilers 5, 6 & 7.
- 1999: Covert from coal to gas/oil.
- 2005: Cogeneration system/hot water distribution installed, added boiler 9 and HP and LP turbines.
- 2015: Boiler 3 removed.
- 2016: Added high efficiency boiler #10
|
- 1967 to 1972: Chillers 1, 2, 3 and 4 added to Central Utilities Plant and river pump house constructed.
- 1999: Added Chiller 5 and Cooling Tower 1 to Central Utility plant
- 2008: Middle Campus Chiller Plant becomes operational, added 4,000 tons with chillers 6 & 7.
- 2014: Expanded Middle Campus Plant, added 8,000 tons with chillers 8, 9 & 10. Chiller 1 retired.
|
| Number of buildings served |
80 |
53 |
| Total gross square footage served |
9,107,110 sq ft |
7,955,819 sq ft |
| Plant capacity |
- 668,000 lb/hr steam
- 394 MMBTU hot water
- 25 MW cogenerated electricity
|
- Central Utilities Plant: 20,800 tons
- Middle Campus Chiller Plant: 12,000 tons
|
| Number of boilers/chillers |
5 steam boilers |
9 chillers: 4 steam driven, 5 electric driven |
| Fuel types |
Natural gas, fuel oil |
Steam, electric |
| Distribution piping type |
Steel in Walkable Tunnel System & pre-insulated bonded direct buried steel |
Ductile iron, coated direct-buried steel, PVC |
| Max Piping Diameter |
Steam 14" NPS, Hot Water 16" NPS |
36" NPS |
| Distribution pumps |
Hot Water- 3 pumps w/VSD, 1,050 total HP |
- Central Plant-4 w/VSD, 1,450 Total HP
- Mid Campus Plant-4 w/VSD, 900 Total HP
|
| System pressures |
- Cogeneration Steam: 900 PSIG
- Campus Steam Distribution: 100 PSIG
- Campus Hot Water Distribution: 130 PSIG
|
105 PSIG |
| System temperatures |
- Cogeneration Steam: 900° F
- Steam Distribution: 383° F
- Condensate Return: 140° F
- District Hot Water Supply: 180-225° F
|
42° F supply, 56° F return |
| System water volume |
Hot water system 250,000 gallons |
800,000 gallons |
