First Major System in The United States
Cornell University's Lake Source Cooling System uses Cayuga Lake as a heat sink to operate the central chilled water system for its campus and to also provide cooling to the Ithaca City School District. The system has operated since the summer of 2000 and was built at a cost of $55–60 million. It cools a 14,500 ton (51 megawatt) load.
Lake water enters the system via a screened intake structure 10,400 feet (3,200 m) away in 250 feet (76 m) of water. The intake pipeline is 63-inch (1.6 m) High Density Polyethylene (HDPE) that was deployed from the surface using a "controlled" sink process where water was pumped in at the shallow end and air was released at the other end. A series of stiffener rings and concrete collars keep the pipeline on the lake floor and protect it from mechanical forces. The outfall is 48-inch (1,200 mm) HDPE and is approximately 750 feet (230 m) long. The last 100 feet (30 m) of the outfall has 38 six-inch (152 mm) nozzles, about 1 foot (0.30 m) above the bottom of the lake floor in 14 feet (4.3 m) of water, pointed up at a 20 degree angle and pointed north only. This helps promote mixing of the return water into the receiving water. The water cools a heat-exchanger which is connected to a closed-loop campus chilled water distribution system linked to many buildings on the main campus.
Read more about this topic: Deep Water Source Cooling
Famous quotes containing the words united states, major, system, united and/or states:
“The United States is not a nation to which peace is a necessity.”
—Grover Cleveland (1837–1908)
“Let’s just call what happened in the eighties the reclamation of motherhood . . . by women I knew and loved, hard-driving women with major careers who were after not just babies per se or motherhood per se, but after a reconciliation with their memories of their own mothers. So having a baby wasn’t just having a baby. It became a major healing.”
—Anne Taylor Fleming (20th century)
“Books are for the most part willfully and hastily written, as parts of a system to supply a want real or imagined.”
—Henry David Thoreau (1817–1862)
“Hearing, seeing and understanding each other, humanity from one end of the earth to the other now lives simultaneously, omnipresent like a god thanks to its own creative ability. And, thanks to its victory over space and time, it would now be splendidly united for all time, if it were not confused again and again by that fatal delusion which causes humankind to keep on destroying this grandiose unity and to destroy itself with the same resources which gave it power over the elements.”
—Stefan Zweig (18811942)
“That Cabot merely landed on the uninhabitable shore of Labrador gave the English no just title to New England, or to the United States generally, any more than to Patagonia.”
—Henry David Thoreau (1817–1862)