Speaker
Monika Lewandowska
(Institute of Physics)
Description
ITER is planned to be the research type tokamak which will achieve the energy breakeven point. The next step towards the realization of fusion energy will be DEMO – the first demonstration fusion power plant producing grid electricity at the level of a few hundred MW. DEMO designers are required to maximize the conversion efficiency of the primary and secondary plant circuits. The Primary Heat Transfer System (PHTS) transfers heat from the nuclear heat sources, i.e. blanket, divertor and vacuum vessel, to the secondary circuit called Balance of Plant (BoP) responsible for generating electric energy. Two main candidate options for the realization of PHTS are considered, namely: Water-Cooled Lithium-Lead Breeding Blanket (WCLL) and Helium-Cooled Lithium-Lead Breeding Blanket (HCLL). The present work is focused on modelling the candidate steam/water BoP cycle for the HCLL option using the GateCycle software. Operation at nominal conditions (during the plasma burn) and in the “off design” conditions (for the dwell phase) is analysed. Since we utilize in the simulations the model of the turbine which has not been produced yet, its part-load characteristics are determined according to the methodology proposed in GateCycle. The developed model of the BoP cycle is used to study the impact of the operating conditions on the cycle efficiency and its basic operating parameters.
Co-authors
Fabio Giannetti
(Department of Astronautical, Electrical and Energy Engineering, Sapienza University of Rome, I-00185 Rome, Italy)
Leszek Malinowski
(Faculty of Maritime Technology and Transport, West Pomeranian University of Technology, Szczecin, Al. Piastow 41, 71-065 Szczecin, Poland)
Monika Lewandowska
(Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Al. Piastow 48, 70-311 Szczecin, Poland)
