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An absorber
tube has been developed and operated in the DISS test loop at Plataforma
Solar de Almeria (PSA). The absorber tube, which is based on the Schott
PTR70, is designed for direct steam generation (DSG) with an operating
temperature of 400ºC. At the end of the project, a commercial tube will
be available which can be used in DSG demonstration plants in Spain. In
a second work package, a detailed study will show the goals and
possibilities for future development of absorber tubes for 500°C. An
optical layer has been developed that withstands temperatures of 500°C
in a vacuum atmosphere.
A key aspect
in the project is the comparison of the direct steam generation with the
state-of-the-art oil technology considering the overall efficiency,
technical and economical parameters. Chances and risks are evaluated
based on a number of plant configurations with different sizes and life
steam parameters.
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