Coal

I was intrigued by Figure 1 of the article, "OG&E`s Seminole Plant Operates Under Free Pressure." This figure is similar to ones that were in 1988 and 1991 Heat Rate Improvement Conference papers co-authored by H.F. Martin and the writer. We were both employed by the Power Generation Business Unit, Westinghouse Electric Corp., and called the operating procedure "combined sliding pressure-constant pressure operation."
Nuclear

Power Engineering welcomes letters expressing the beliefs and opinions of readers on all aspects of electricity generation and the electric power industry in the United States. To be considered for publication, letters must identify the author and contain a return address to allow the editorial staff to verify their origin. Letters may be edited for length and clarity. Letters are accepted by mail, fax or e-mail. Just contact Power Engineering at 1421 S. Sheridan Road, Tulsa, OK 74112; (918) 831
Coal

I found the article entitled, "Stray currents can damage turbine bearings," by Dr. Leyzerovich (August 1997) to be very informative. However, the photo on page 43, while typical of journal bearing damage, is less than typical of the electrical pitting damage described in the article. The characteristic frosted appearance could probably be better shown.
Coal

In reference to your article on the Kalina combined-cycle plant ("First Kalina combined-cycle plant tested successfully," May 1997), little known, and unheralded, another turbine cycle efficiency improvement [the Rosenblatt Cycle Turbine System, (RCTS)], was being developed and patented concurrently with the Kalina cycle. It was invented by an experienced American engineer working alone on an island in the Florida Keys--with no governmental assistance.
Emissions

I commend Wade Graves of Western Resources and his article, "We`re asking for trouble," in the January issue of Power Engineering for speaking out on some of the spoken concerns hidden in the rush to open access/deregulation. This rush seems to be a mantra for editors in both the industry journals and the popular press, as well as our national regulators and some state regulators. This concept will look great for some portions of the country, for some segments of the power generation industry,
Air Pollution Control Equipment Services

The article, "New equipment design delivers accurate coal measurement," in the February 1997 issue caught my attention because I am involved in research associated with coal and its sampling, analysis and handling. the authors of the article suggest a reasonably simple solution to the `dry basis` feeding coal. A simple, inexpensive and highly reliable method for accomplishing this task could bring the coal-fired utilities one step closer to calorimetric feeding of fuel to boilers yielding impro
Emissions

I commend Wade Graves of Western Resources and his article, "We`re asking for trouble," in the January issue of Power Engineering for speaking out on some of the spoken concerns hidden in the rush to open access/deregulation. This rush seems to be a mantra for editors in both the industry journals and the popular press, as well as our national regulators and some state regulators,
Emissions

I just returned from POWER-GEN and had a moment to read your opinion article in the November 1996 issue of Power Engineering. I agree with you wholeheartedly about the need for new generation. Although, I have to disagree with the next-to-last paragraph.
Coal

Your February 1997 opinion column, "we're not in China, Toto," on China's use of labor vs. machinery raises interesting questions, and the answers may not be unimportant to U.S. labor.
Coal

Your article on energy storage in the Power Engineering March 1997 issue, page 21, is a timely insight into yet another possible deregulation impact on utilities. With its experience, capacity and cost, compressed air energy storage (CAES) is a viable energy storage strategy. As Alabama Electric Cooperative`s engineer on its CAES plant, we are aware of the challenges--both physical and economic--that were overcome by the owner and others involved.