| 摘要 |
PURPOSE:To prevent damage of nuclear fusion apparatus by suppressing boiling surface temperature to the specified temperature or less with the form of boiling at the high load heat receiving surface which becomes higher than the draining point of cooling liquid defined as the pseudo nuclear boiling by the forced convection of cooling liquid. CONSTITUTION:Many fin-shaped boiling surfaces 2 are formed in the heat radiating side of the heat receiving surface 1 which receives generated heat load such as cystron and a flowing path 7 is formed by placing in contact the internal wall 3 of the cooling liquid tank 6 with the heat receiving surface 1, particularly the heat receiving surface 1a which receives the high thermal load. The cooling water is forced to flow into the narrow path 7 through the lower cooling tank 8 and the cooling water is quided to the upper cooling tank 9 under the condition of pseudo uncleara boiling as the cooling water defined as the high speed two-phase flow of forcibly convected gas and liquid by volume expansion with reduction of area and vaporization. The cooling liquid is further processed with a gas-liquid separation apparatus 15, etc. and is then circulated by a pump 12. Therefore, since the film boiling condition is not generated in the cooling water, high load cooling can processed with a low temperature rise by suppressing generation of draining point.
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