Energy Conversion System Modeling Based On HTGR Cogeneration For Electric Generation And Hydrogen Production

ENERGY CONVERSION SYSTEM MODELING BASED ON HTGR COGENERATION FOR ELECTRIC GENERATION AND HYDROGEN PRODUCTION

Ign. Djoko Irianto
Center For Reactor Technology and Nuclear Safety - BATAN
Kompleks Puspiptek Serpong, Tangerang Selatan
Email: igndjoko@batan.go.id
ABSTRACT
ENERGY CONVERSION SYSTEM MODELING BASED ON HTGR COGENERATION FOR ELECTRIC GENERATION AND HYDROGEN PRODUCTION. Very High Temperature Reactor (VHTR) is a high temperature gas-cooled reactor (HTGR) which be a one of Generation IV reactors which is conceptually designed employs a helium-coolant with operating pressure 7,0 MPa and 1000 oC outlet temperature. Conceptually, VHTR is designed using cogeneration configuration for electric generation and for hydrogen production. The thermal power of the reactor could be determined according to the requirement which will be build in Bangka Belitung Province is 600 MWth. In this research, energy conversion system modeling based on HTGR cogeneration has been done in direct and indirect cycle configuration. There are two configuration in the direct cycle, which divide of the IHX and turbine in parallel or serial. With assumption of a helium-coolant used in the both side of IHX, the optimal effectiveness IHX is 0.95. Based on the effectivenes of heat exchanger, the heat transfer rate has been calculated. The system efficiency calculated for the three configuration. In generally, the efficiency of direct cycle is higher than the other. The efficiency is about 50%. Despite its low efficiency, the indirect cycle configuration obtains the highest effectiveness.

Keywords: HTGR, energy conversion system, cogeneration, effectiveness, efficiency
Published : Proceeding "SEMINAR NASIONAL PENGEMBANGAN ENERGI NUKLIR III 2010", Cilegon, Banten, 24 Juni 2010.