| 摘要 |
<p>A heating reactor is disclosed comprising a pressure vessel (4) receiving a reactor core (5) and a primary heat exchanger (6). The pressure vessel is surrounded by a heat sink (2). The pressure vessel (4) is of a double-walled structure such that its two walls (41, 42) form an intermediate chamber (40, 140). A tank (31) is in communication with the chamber. The tank (31) contains air as a heat insulating medium and water as a heat conducting medium. In a regular operation, a fan (10) fills the intermediate chamber (40, 140) with air coming from the tank (31). In case of a disruption in the cooling of the reactor core (5), the intermediate chamber (40, 140) is filled with water. It flows into the intermediate chamber (40, 140) from the tank (31) by gravity upon the shut-off of the fan. Thus, the heat generated upon disruption is readily transferred into the heat sink surrounding the pressure vessel. Structural simplicity of the arrangement is another advantage of the present invention.</p> |
