Reducing steam turbine costs while increasing efficiency

For as long as steam turbines have existed, there have been two major trends for drivers in steam turbine development and innovation: achieving higher efficiency and ensuring longer life span and reliability. In the recent decades, several additional drivers have come into play and have become increasingly important contributors in determining steam turbine and power plant configurations. These factors include climate change concerns, cost pressure and shorter delivery time, which are quite typical manifestations of the intensifying competitive pressure within the industry.

Proper Selection of Turbo-Compressor

1   INTRODUCTION

Evaluation and purchasing of turbo-compressors should involve an optimization process with respect to full array of compressor data. Otherwise, equipment may not be suitable over the full operating cases, in meeting reliability, maintainability, availability, commercial terms or power requirements for which the client expects.

 

2   COUPLING SELECTION

Reaction combustor fuels

The early promise of CFD-based design approaches was that the predictable nature of the calculations would enable studies of multiple gas turbine combustor designs prior to prototyping. As part of the development flow, simulation could predict important system attributes such as stability and emissions performance and reduce the need for costly experimental testing. Results vary widely, however, among organizations.

Industrial Steam Turbine: today and tomorrow

The industrial steam turbine has to change with the times. Competition pushes OEMs to develop new and more efficient turbines. In power generation the picture is more or less clear.  This month Turbomachinery magazine published an article that said that Seimens, GE, Alstom and Mitsubishi have all surpassed the 60% combined cycle efficiency milestone. What then is a realistic target for industrial steam turbines?

And how do we achieve this target for turbines of 5MW, 10MW or 40MW? 

combustion chemistry

 

Erosion and CFD

Turbomachinery flows that contain solid particles represent an undesirable yet often inescapable condition because of practical operating considerations. Dust, sand, fly ash, iron oxide, process-originated materials, and debris from abradable seals or blade rubbing are examples of the varied composition of these solid particles.

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