Download Closed-cycle gas turbines : operating experience and future by Hans Ulrich Frutschi PDF

By Hans Ulrich Frutschi

This booklet is a beneficial addition to the facility new release literature. the writer has many years of expertise within the fuel turbine undefined, and knowledgeable less than the daddy of closed-cycle gasoline generators, Dr. Curt Keller of Escher-Wyss in Zurich. Closed-cycle generators skilled a resurgence of curiosity within the Eighties and stay a promising expertise. there's presently no similar ebook on hand that covers either the heritage and destiny strength functions of closed-cycle gasoline generators

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Extra info for Closed-cycle gas turbines : operating experience and future potential

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8. 6 Dundee, 1954 The British licensee John Brown also built a plant in Dundee which was broadly similar to the one in Paris. In this case the two main machines were not arranged at right angles, but parallel to each other. All the compressors were of an axial design. Unfortunately, the plant never went into full operation, mainly due to an insurmountable problem with vibra- Fig. 12 Model of the John Brown Dundee installation. Like the Paris plant, but parallel arranged turbo sets (left) and air heater with charging group (right).

After years of adjustments and modifications, the Paris plant was handed over to the customer, meeting the guaranteed power output of 12 MW. However, it failed to reach 33% efficiency (see Fig. 8). This was mainly due to the poor efficiency of the radial high-pressure compressor. The medium-pressure and low-pressure compressors were welldesigned axial machines. This also applied to the turbines. The installation did work satisfactorily in the end, but was then shut down after around 7000 operating hours, in order to make way for a 250 MW steam block.

The machine had a purely split-shaft arrangement. Unfortunately this system never progressed beyond test operation because the boat was never built. There would almost certainly have been problems to deal with, but the concept was good and may still be interesting today (possibly in a semi-closed design, as suggested in Chapter 9). The split-shaft arrangement necessitated by the continuous speed control required a heavy bypass valve (top left) to prevent over-speed of the propeller turbine if a shaft or screw broke.

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