INFLUENCE OF PIPE DIAMETER IN ADVANCED REACTORS NATURAL CIRCULATION SYSTEM Amna Yasya Mubarok, (a*), Sidik Permana (a), Dwi Irwanto (a)
a) Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*amnayasya[at]gmail.com
Abstract
4th gen reactors are focused on developing 4 aspects- highly economical, enhanced safety, minimal waste, and proliferation resistance. 4th gen reactor using natural circulation on coolant as an enhanced safety system. Natural circulation makes sure coolant is still able to release heat since the coolant is still flowing. This research is done to study the natural circulation using COMSOL Multiphysics and experiment. Model used in this research is a reactor coolant which is 100 cm in height and 50 cm in width. In this research the diameter of the pipe varied at 1/2, 1/4, and 1 inch. Simulation and experiment able to perform natural circulation. The result shows changes in heat dissipation on each configuration. Bigger pipes have more water volume, meanwhile the heater and cooler give and take the same amount of heat, the result is bigger pipes have higher difference on water lowest and highest temperature.
