Heat Exchanger

A heat exchanger comprising:

• a first flow path through which a first fluid flows;
• a second flow path through which a second fluid flows;
• and
• an adjustment layer disposed between the first flow path and the second flow path adjacent to each other and that adjusts an amount of heat exchange between the first flow path and the second flow path;
• wherein
• the first flow path, the second flow path, and the adjustment layer each include a planar flow path layer and are stacked on each other;
• the adjustment layer includes a first portion and a second portion having a heat transfer performance lower than that of the first portion, and has a heat transfer performance varied depending on a position in the adjustment layer;
• and
• the first portion and the second portion include heat conduction structures that make a connection between the first flow path and the second flow path adjacent to each other and having different heat transfer performances.

A heat exchanger comprising:

• a first flow path through which a first fluid flows;
• a second flow path through which a second fluid flows;
• and
• an adjustment layer disposed between the first flow path and the second flow path adjacent to each other and that adjusts an amount of heat exchange between the first flow path and the second flow path;
• wherein
• the first flow path, the second flow path, and the adjustment layer each include a planar flow path layer and are stacked on each other;
• the adjustment layer includes a first portion and a second portion having a heat transfer performance lower than that of the first portion, and has a heat transfer performance varied depending on a position in the adjustment layer;
• the first fluid is a low-temperature liquefied gas evaporated in the first flow path;
• and
• the second fluid is a liquid heat medium cooled by the liquefied gas.

A heat exchanger comprising:

• a first flow path through which a first fluid flows;
• a second flow path through which a second fluid flows;
• and
• an adjustment layer disposed between the first flow path and the second flow path adjacent to each other and that adjusts an amount of heat exchange between the first flow path and the second flow path;
• wherein
• the first flow path, the second flow path, and the adjustment layer each include a planar flow path layer and are stacked on each other;
• the adjustment layer includes a first portion and a second portion having a heat transfer performance lower than that of the first portion, and has a heat transfer performance varied depending on a position in the adjustment layer;
• the adjustment layer has a hollow flow path structure through which a fluid can flow except during the heat exchange;
• and
• when freezing of the second fluid occurs in the second flow path, a heat medium is supplied to the adjustment layer except during the heat exchange so as to eliminate the freezing of the second fluid.

A heat exchanger comprising:

• a first flow path through which a first fluid flows;
• a second flow path through which a second fluid flows;
• and
• an adjustment layer disposed between the first flow path and the second flow path adjacent to each other and that does not communicate with the first flow path and the second flow path and adjusts an amount of heat exchange between the first flow path and the second flow path;
• wherein
• the first flow path, the second flow path, and the adjustment layer include flow path layers having a cylindrical multi-tube structure and concentrically disposed;
• the adjustment layer includes a first portion and a second portion having a heat transfer performance lower than that of the first portion, and has a heat transfer performance varied depending on a position in the adjustment layer in a flowing direction of the first fluid or a flowing direction of the second fluid;
• and
• the first portion and the second portion include heat conduction structures that make a connection between the first flow path and the second flow path adjacent to each other and having different heat transfer performances.