Korea Atomic Energy Research Institute

Korea Hydro Nuclear Power Co., Ltd.

Jae Hyuk Eoh

Yong Bum Lee

Dong Uk Lee

Tae Joon Kim

Ji-Young Jeong

Byeongyeon Kim

Chungho Cho

Yeong Ii Kim

Kwi Seok Ha

Ji Young Jeong

Hae Yong Jeong

In Koo Hwang

Jong Man Kim

A molten metal level measuring device in a continuous molten metal level measuring device uses temperature compensation. The device includes a cylindrical bobbin, a liquid level measuring unit helically wound around an outer surface of the bobbin, a circular inner cylinder in which the bobbin and the liquid level measuring part are located and which seals the bobbin and the liquid level measuring part from the outside and has the same axial direction as the bobbin, and a cylindrical protective tube in which the inner cylinder is located and which has the same axial direction as the bobbin and has one open end. Thermocouples extend axially in the space between the inner cylinder and the protective tube, and a control unit controls the liquid level measuring part to measure a liquid level of the molten metal based on the temperatures measured by the thermocouples.

Continuous-type long-ranged molten metal level measuring device and thermal system using multi-point temperature sensor

An apparatus and method for monitoring a flow of liquid in a pipe are provided. The apparatus may include a temperature sensor attached to a pipe of a heat exchanger system to measure a temperature of the pipe, and a controller to determine whether a liquid is present in the pipe, based on a change in the measured temperature.

Apparatus and method of monitoring flow of liquid in pipe

Disclosed herein is a decay heat removal system, including: a decay heat exchanger that absorbs decay heat generated by a nuclear reactor; a heat pipe heat exchanger that receives the decay heat from the decay heat exchanger through a sodium loop for heat removal and then discharges the decay heat to the outside; and a sodium-air heat exchanger that is connected to the heat pipe heat exchanger through the sodium loop and discharges the decay heat transferred thereto through the sodium loop to the outside. According to the decay heat removal system, a heat removal capability can be realized by the heat pipe heat exchanger at such a high temperature at which the safety of a nuclear reactor is under threat, and a cooling effect can be obtained through the sodium-air heat exchanger at a temperature lower than that temperature.

Decay heat removal system comprising heat pipe heat exchanger

Growing community of inventors

Daejeon, South Korea

Jae Hyuk Eoh