KAJIAN SISTEM PENDINGIN REAKTOR MSR UNTUK MENDUKUNG KETAHANAN ENERGI MASA DEPAN

Abstract

This pre-conceptual design for the MSR (Molten Salt Reactor) cooling system aims to design the main components of the cooling system, such as pumps and heat exchangers, to meet the design specifications. In this program, calculations of the outlet temperature and the flow rate were also carried out. The cooling system design functions to ensure that the core can be cooled safely during normal, transient, and accident operations. The design was carried out using FLUENT software by modeling the core in the 1/8-cylinder geometry. Inlet temperature of 550^oC and the pressure of 3 bar were chosen as an input parameter. The calculation results showed that the proposed core configuration has a good fuel flow distribution, even though there are dead zones at several locations above and below the active core. The calculation result showed that the maximum outlet temperature is 630^oC. The designs for primary and secondary heat exchanger are using 1 unit for each of them with the capacity of 20 MWt. The performance of the primary heat exchanger can increase the temperature of cooling salt by 92.4^oC, while the secondary heat exchanger 103.1^oC. The design results showed that all technical specifications can be met with maximum and safe performances.