PURPOSE: To simplify the structure, reduce the cost and improve the heat conducting performance by arranging heat conducting pipes disposed inside the shell in such a manner that the pitch is denser for heat conducting pipes located in the upper and lower layers and the pitch is larger for heat conducting pipes located in the middle layer, and/or by making the heat conducting pipes located in the upper and lower layers to have fins.
CONSTITUTION: Among heat conducting pipes 3... disposed inside the shell, the pitch p0 of the heat conducting pipes 3... located in the upper and lower layers l1, l2 is made smaller, and the pitch (p) of the heat conducting pipes 3... located in the middle layer l3 is made larger. Further, the heat conducting pipes 3... in the upper and lower layers l1, l2 are fitted with fins 10. In this manner, the heat conduction is enhanced in the upper and lower layers where the heat conducting performance is significantly affected, and a simplification can be done for the area where there is less influence to the heat conducting performance, allowing a reduced cost. Moreover, the interior of the shell is made in a double structure by installing an inner shell 11 along the shell 2 via multiple supporting plates 12 to reduce the heat dissipation from the external surface.
ABE NOBUYUKI
KANARI KATSUHIKO
HIYAMA KUNIHIKO
HAMAOKA MASAYOSHI
MITSUBISHI HEAVY IND LTD