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Results PCMs on the basis of salt hydrates are characterized by their extreme supercooling behaviour. Nucleating agents are used to trigger crystallization and to therefore release the stored heat. Nucleation occurs when the supercooled melts have surfaces that are chemically similar to the growth surfaces of the PCM. In this vein, algorithms have been developed to search crystal structure data for similar growth surfaces. The ATBEL program carries out a morphology prognosis, determines the atomic layout of the crystal surfaces and stores the information in a database. This crystal surfaces database is used by the program EPITAX to search for similar crystal surfaces. Download ATBEL and EPITAX (external link to TU Bergakademie Freiberg).
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