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Politics : Rat's Nest - Chronicles of Collapse -- Ignore unavailable to you. Want to Upgrade?

To: Wharf Rat who wrote (9601)	10/9/2009 11:14:03 AM
From: Wharf Rat	Respond to of 24213

Hoover Dam Hydroelectric increased by 6% to 7% Oil Drum comment... Unfortunately behind a paywall. 3% of the water was being leaked from 1930's era wicker gates (turbine was off, but seal was not very good, so water leaked out without producing any power). Cast steel/iron was replaced by machined stainless steel and dramatically reduced leaks. Five different series of turbines at Hoover, and all are being modernized & maintained. 3% to 4% gains in efficiency (more power, same water). Unfortunately, total water volumes and head are down significantly, so total electric production is well below what is was a decade or two ago. Best Hopes for updating all hydroelectric plants, Alan