Inverted heat exchanger device

A heat exchanger device defining an axial direction and a radial direction and comprising:

• an exterior conduit elongated and extending around a center axis between a first end and a second end, the exterior conduit comprising a body having an exterior surface, a center core elongated along the center axis, and plural walls extending in one or more directions away from the center core;
• a first conduit disposed inside the body of the exterior conduit, the first conduit including an inlet, an outlet, plural core passages and internal manifolds defined by the plural walls of the exterior conduit, wherein a first fluid is configured to flow within the first conduit;
• a second conduit disposed inside the body of the exterior conduit, the second conduit including an inlet, an outlet, plural core passages and internal manifolds defined by the plural walls of the exterior conduit, wherein a second fluid is configured to flow within the second conduit,
• wherein the first fluid is configured to exchange heat with the second fluid as the first fluid flows within the first conduit and the second fluid flows within the second conduit,
• wherein a flow area of each of the plural core passages of the first conduit is smaller than a flow area of the inlet and smaller than a flow area of the outlet of the first conduit,
• wherein a flow area of each of the plural core passages of the second conduit is smaller than a flow area of the inlet and smaller than a flow area of the outlet of the second conduit,
• wherein the internal manifolds of the first conduit and the internal manifolds of the second conduit extend continuously from the first end to the second end in the axial direction, and
• wherein the internal manifolds of the first conduit and the internal manifolds of the second conduit are at same radial distances from the center axis.

An inverted heat exchanger device defining an axial direction and a radial direction and comprising:

• an exterior conduit elongated and extending around a center axis between a first end and a second end, the exterior conduit comprising a body having an exterior surface, an interior surface, a center core elongated along the center axis, and plural walls extending in one or more directions away from the center core;
• a first conduit disposed inside the body of the exterior conduit, the first conduit including plural core passages and internal manifolds, wherein the plural walls of the exterior conduit define the plural core passages and the internal manifolds, wherein a first fluid is configured to flow between the internal manifolds and the plural core passages along the first conduit;
• a second conduit disposed inside the body of the exterior conduit, the second conduit including plural core passages and internal manifolds, wherein the plural walls of the exterior conduit define the plural core passages and the internal manifolds, wherein a second fluid is configured to flow between the internal manifolds and the plural core passages along the second conduit,
• wherein the plural core passages of the first conduit are configured to direct the first fluid in at least three different directions within the body of the exterior conduit,
• wherein the plural core passages of the second conduit are configured to direct the second fluid in at least three different directions within the body of the exterior conduit,
• wherein the internal manifolds of the first conduit and the internal manifolds of the second conduit extend continuously from the first end to the second end in the axial direction and
• wherein the internal manifolds of the first conduit and the internal manifolds of the second conduit are at same radial distances from the center axis.