Originally developed mainly for solar energy utilization, the Ormat Closed Cycle Vapor Turbines were first applied to fossil-fuel on-site power generation in remote locations because of their inherent high reliability and low maintenance characteristics. Latterly, conditions changed and the technology has been reapplied to its original use: e.g. solar ponds, waste heat recovery and moderate temperature geothermal sources. This paper presents the results of actual field experience of operating some 3,500 turbogenerators in various applications.

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