DESIGN OF A HELICAL TYPE STEAM GENERATOR FOR EXPERIMENTAL POWER REACTORS

• Main Author: Ineza Putri, Sunny
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/39469
• Institution: Institut Teknologi Bandung

Reaktor Daya Eksperimental (RDE) is nuclear reactors that can be used for electricity generation, heat generation and hydrogen production. The design of the Batan's steam generator was still being developed to get optimal results. Empirical and numerical calculations with Computational Fluid Dynamic (CFD) software are needed to strengthen existing designs. Batan's design data was used in empirical calculations of single-phase and two-phase heat transfer that occur in a steam generator. In addition to calculating heat transfer, the height of the coil required in the heat transfer was also calculated. Another method was numerical calculation using ANSYS Fluent to analyzed temperature distribution and pressure along the pipe. The Batan RDE steam generator design has a seven-layer helical pipe model, however in this study was simplified using one-layer helical pipes. Simplifying the system was not as easy as turned seven coiled pipe layers into one helical pipe then used the same design parameter values. In empirical calculations, the heat transfer region was divided into three parts, which were single-phase liquid heat transfer, two-phase heat transfer, and single-phase vapor heat transfer. In numerical calculations, heat transfer in a helical pipe was assumed to be a constant heat flux with a constant working fluid property. The results of empirical calculations showed that the helical pipe height was 3,98 m, shorter than the Batan design, i.e. 4,97 m. This considerable difference was caused by empirical calculations that did not cover the safety factor. The results of numerical calculations show that in the case of single-phase empirical calculations were acceptable since the different values of numerical calculations for empirical calculations were below 10%, meanwhile in the case of two-phases were not satisfactory. In the case two-phase heat transfer, numerical calculations need further research in order to obtain optimal results.