POWER [May, 15 2006]

Cover Stories

Curbing the blue plume: SO3 formation and mitigation

Understanding why stack emissions become opaque leads to better choices of systems for controlling SO3 and other pollutants, based on current and future plant operating configurations.

Preparation keyed Entergy’s responses to Katrina, Rita

With the 2006 hurricane season about to begin, climatologists are predicting that the Atlantic Ocean will spawn 17 “named” storms this summer and fall, with 9 categorized as hurricanes and 5 expected to be “intense.” Whether or not your plant lies in a vulnerable coastal area, you’d do well to learn a few lessons from Entergy’s unique experience last year.

Recycling, reuse define future plant designs

The Valley of the Sun went off the water wagon on March 4, ending a record 136 consecutive days without measurable rainfall. That first 0.05-inch sip, followed by a 0.18-inch…

Features

Cheng Cycle flirts with 2 ppm NOx— and CO

Three years ago, an article in POWER described how Cheng Power Systems, by modifying the combustors of several popular gas turbines, had used steam injection to lower the units’ NOx…

Designing and maintaining steam coil air preheaters for reliability and effectiveness

If engineered well and drained properly, a simple finned-tube heat exchanger can help maximize a fossil-fueled power plant’s combustion efficiency, capacity, and air pollution reduction. Use the guidelines in this…

How accurate primary airflow measurements improve plant performance

Primary airflow has a major impact on the efficiency, capacity, and cleanliness of pulverized coal–fired generation. Inaccurate measurements that underestimate primary airflow levels can lead to negative operational outcomes that include increased boiler gas temperatures, flyash loss-on-ignition, excessive NOx emissions, and higher-than-necessary fan power consumption. We remind you how to avoid those headaches.

Solving plant vibration problems

Solving insidious vibration problems in rotating equipment may sometimes seem like a black art that requires the right incantation. But identifying the root cause of the vibration is actually a…

Departments

Commentary

New Products

Legal & Regulatory

State monitoring fails the cost/benefit test

      Steven F. Greenwald and Christopher A. Hilen Utility regulators in California and other states have begun subjecting power plants to extensive oversight of their O&M activities. These oversight programs…

Focus on O&M

Focus on O&M (May 2006)

Desalination, Italian style; How to minimize DI operating costs; Advanced flow meter works with shorter pipe runs; Why tubing beats piping.

Global Monitor

Global Monitor (May 2006)

Nuclear hot streak continues/Who's winning in U.S. wind power?/ Canadian wind picking up too/ Brazilian port powers itself/ Biomass meets CHP in Sweden/ Power surfing from Scotland to Germany

Speaking of Power

Greener than thou

U.S. wind power is on a roll, with wind farms sprouting like weeds. But in the near future, utilities may end up paying higher prices for wind capacity because state…

GBR Reports