Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Establishment of calculation methodology and thermal analysis for the development of a water calorimeter

  • Kang, M.Y. (Seoul National University) ;
  • Kim, Junhyuck (Seoul National University) ;
  • Choi, H.D. (Seoul National University)
  • Received : 2020.04.25
  • Accepted : 2020.04.28
  • Published : 2020.11.25
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Abstract

As an early stage in the development of a water calorimeter, this study established a computer simulation methodology for analyzing the thermal behavior of a water calorimeter based on radiation transport and energy deposition. As a result, this study developed a method wherein the energy deposition distribution, which is obtained by applying Monte Carlo methods in water calorimeters, is directly used as a heat source for the thermal analysis model. Based on the proposed method, heat transfer in a water vessel and the effect of thermistor self-heating were analyzed. Through an analysis of the water velocities with and without a water vessel, it was found that a water vessel can serve as a convection barrier. Furthermore, it was confirmed that when considering thermistor self-heating, the water temperature change at the thermistor location is 0.219 mK higher compared to that when the thermistor was not considered. Therefore, thermistor self-heating must be considered to analyze the thermal behavior of a water calorimeter more accurately.

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