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A new generation of absorber tubes for concentrating solar thermal (CST) systems

A. Morales, and G. San Vicente     Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain

Abstract

Heat collector elements or solar receiver tubes are a key element in the development and performance of parabolic trough collector technology. They are responsible to collect solar energy and to transfer the heat collected to the heat thermal fluid. Main challenges to be met in the future are to increase durability and to reduce cost and maintenance. In order to increase durability, vacuum maintenance is the major challenge because thermal losses and selective absorber stability are directly dependent on vacuum level. Selective ...

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