Abstract
One of the short-term priorities for renewable energies in Europe is their integration into communities and energy islands for local power supply (blocks of buildings, new neighborhoods in residential areas, shopping centers, hospitals, recreational areas, eco-parks, small rural areas or isolated ones such as islands or mountain communities). Following this strategy, the integration of small solar tower fields into so-called MIUS (Modular Integrated Utility Systems) is proposed. This application strongly influences field concepts leading to modular multi-tower systems able to more closely track demand, meet reliability requirements with fewer megawatts of installed power and spread construction costs over time after output has begun. In addition, integration into single-cycle high-efficiency gas turbines plus waste-heat applications clearly increments the solar share. The main questions are whether solar towers can be redesigned for such distributed markets and how to make them feasible. This paper includes the design and performance analysis of a 1.36 MW plant and its integration in the MIUS system, as well as the expected cost of electricity and a sensitivity analysis of the small tower plant’s performance with design parameters like heliostat configuration and tower height. A practical application is analyzed for a shopping center with a solar tower producing electricity and waste heat for hot water and heating and cooling of spaces.
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