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Power


Monthly Issue | August 15, 2007

Global warming "consensus" continues to melt away

We are witnessing an international awakening of scientists who are speaking out in opposition to former Vice President Al Gore, the United Nations, and the media-driven "consensus" on man-made global…


Retrospective

August 1886 POWER reported on one of the first twin-cylinder "Otto" natural gas–fired engines that had recently appeared in the U.S. power market. The report notes that "engines of 100…


Marmy’s loose rivets

Watching the submarine Nautilus come up the Hudson River from my 26th-floor window put a few mental gears into motion. For one thing, I was suddenly back at sea again.…


Detecting and solving lube oil varnish problems

Autodegradation is a phenomenon that plagues gas turbines, particularly large frame units. Once the additives in turbine oil deplete, the oil becomes saturated with soluble soft contaminants. As the oil…


Application determines DG system configuration

Distributed generation (DG) can be configured in many different ways, with many kinds of technologies and equipment. Among the choices are gas turbines, reciprocating engine-generator sets, photovoltaic arrays, and wind…


Use predictive techniques to guide your mercury compliance strategy

Under the Clean Air Mercury Rule (CAMR) issued by the U.S. Environmental Protection Agency in March 2005, the estimated 48 tons of mercury (Hg) emitted annually by coal-fired power stations…


Field experience with mercury monitors

Federal and state limits on emissions of mercury (Hg) from power plants typically require periodic or continuous measurement of Hg levels by approved reference methods (RMs) and continuous emission monitoring…


Finding and fixing leakage within combined HP-IP steam turbines: Part II

For Westinghouse (Figure 1) and Allis-Chalmers combined high-pressure/intermediate-pressure (HP-IP) turbines, there are more design (and potential nondesign) leakages to the IP turbine than in General Electric machines. That's because the…


PSNH’s Northern Wood Power Project repowers coal-fired plant with new fluidized-bed combustor

Public Service of New Hampshire (PSNH), the only regulated utility in New England that still owns its generating assets, commissioned the Northern Wood Power Project (NWPP) at its existing Schiller…


MidAmerican’s Walter Scott, Jr. Energy Center Unit 4 earns POWER’s highest honor

Renewed interest in higher plant efficiency, stable fuel costs, and energy security makes pulverized coal plants very attractive these days. Burning that coal to produce steam at supercritical pressure and…


Is ratepayer funding of utility R&D outdated?

Southern California Edison Co. (SCE) is requesting regulatory approval to recover over $50 million from ratepayers to analyze the feasibility and cost of a "commercial-scale" clean hydrogen power generation (CHPG)…


Focus on O&M (August 2007)

PREVENTIVE MAINTENANCE Stop valves from leaking money Testing valves for leakage costs little but can save a lot. Energy drops across many valves exceed 1,250 Btu/lb, and leakage rates can…


Readers talk back and Corrections (August 2007)

Reaction to reactor comment On page 34 of your April article on nuclear power, the author mischaracterized the maturity of one of the new reactors that have been submitted for…


Global Monitor (August 2007)

PG&E mounts tidal power project Pacific Gas and Electric Co. (PG&E), the city and county of San Francisco, and Golden Gate Energy Co. have agreed to undertake a comprehensive study…


Fueling around

Europeans didn't know that corn existed before Columbus "discovered" America. It had been cultivated by indigenous North Americans for thousands of years before the Italian brought home what was to…


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