HOME
 Event Calendar
 EMCS
 CEF
 Ice Plant Facts
 ERP
 Links
 FAQ
 Credits
 Training
 Contact Us

 

 Ice Plant Facts

· The Ice Plant builds and stores ice at night to provide campus air conditioning the following day. This concept allows Stanford to take advantage of inexpensive nighttime electrical rates, and avoid expensive daytime electrical demand charges.

· 100,000 ton-hours of ice can be stored. This is the equivalent of:

    - 100,000 window air conditioners operating for 1 hour

    - Enough cooling for about 10,000 single-family homes on a hot summer day

    - 8,000,000 pounds of ice

    - 128,000,000 ice cubes

· The ice is built and stored on 360 miles of 1" steel tubing in a 4,000,000 gallon tank located under the Jordan Quad parking lot.

· This is the third largest ice storage facility in the world.

· We currently have three 2,500 ton chillers but the plant will ultimately have five chillers.

· Each chiller has a 2,250 H.P. motor operating at 12,000 volts.

· Each chiller uses 2000 pounds of environmentally friendly anhydrous ammonia as a refrigerant.

· Cooling energy is transferred with a 25% ethylene glycol / water mixture much like the antifreeze used in automobiles, except that 200,000 gallons are required.

· The Ice Plant is 100% computer controlled and operated remotely. The plant is inspected once every eight hours.

· Stanford's current peak electrical demand is 25 megawatts, the equivalent of about 10,000 single-family homes.

· Ice storage technology saves Stanford about 8 megawatts of peak electrical demand and 5 megawatts of average summer daytime load over a conventional cooling system. This translates to annualized savings of about $500,000.

 

Please contact our Webmaster with questions or comments.  Copyright Stanford University.  All rights  reserved.  Last update 5/17/00.

SU Home Page Fac Ops Home Page