Microchannel heat exchanger

A microchannel heat exchanger for cooling hydrogen gas with a cooling medium, the microchannel heat exchanger comprising:

• a cooling side layer formed with a plurality of medium flow paths for flowing the cooling medium;
• and
• a high temperature side layer placed on the cooling side layer, the high temperature side layer being formed with a plurality of hydrogen flow paths for flowing the hydrogen gas and an introduction port for flowing the hydrogen gas into the plurality of hydrogen flow paths,
• wherein the introduction port has a circular shape or an elliptical shape,
• an inflow end of each of the plurality of hydrogen flow paths is connected to a peripheral surface of the introduction port,
• the cooling side layer and the high temperature side layer include a heat exchange region in which the plurality of medium flow paths and the plurality of hydrogen flow paths overlap each other in a direction in which the cooling side layer and the high temperature side layer are placed on each other,
• the plurality of hydrogen flow paths extend from the inflow end to the heat exchange region without branching, and
• the inflow ends of the plurality of hydrogen flow paths are located at equal intervals over an entire circumference of the introduction port.

A microchannel heat exchanger for cooling hydrogen gas with a cooling medium, the microchannel heat exchanger comprising:

• a cooling side layer formed with a plurality of medium flow paths for flowing the cooling medium and a medium introduction port for flowing the cooling medium into the plurality of medium flow paths;
• a high temperature side layer placed on the cooling side layer, the high temperature side layer being formed with a plurality of hydrogen flow paths for flowing the hydrogen gas and an introduction port for flowing the hydrogen gas into the plurality of hydrogen flow paths, and
• a second introduction path that is formed so as to penetrate the cooling side layer and the high temperature side layer in the direction in which the cooling side layer and the high temperature side layer are placed on each other and configured to allow the cooling medium to flow,
• wherein the introduction port has a circular shape or an elliptical shape,
• an inflow end of each of the plurality of hydrogen flow paths is connected to a peripheral surface of the introduction port,
• the cooling side layer and the high temperature side layer include a heat exchange region in which the plurality of medium flow paths and the plurality of hydrogen flow paths overlap each other in a direction in which the cooling side layer and the high temperature side layer are placed on each other,
• the plurality of hydrogen flow paths extend from the inflow end to the heat exchange region without branching, and
• the medium introduction port is a part of the second introduction path located in the cooling side layer, and has a larger area than the introduction port.