The present disclosure relates to heat exchanger for a power generation system and related methods that use supercritical fluids, and in particular to a heat exchanger configured to minimize axial forces during operation.
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1. A heat exchanger configured for a power generation system, the heat exchanger comprising: a. at least one plate assembly including a first end, a second end opposed to the first end along an axial direction, and at least one serpentine segment that extends between the first end and the second end
1. A heat exchanger configured for a power generation system, the heat exchanger comprising: a. at least one plate assembly including a first end, a second end opposed to the first end along an axial direction, and at least one serpentine segment that extends between the first end and the second end, the at least one serpentine segment including a plurality of slot portions aligned along a lateral direction that is perpendicular to the axial direction and configured to permit thermal expansion and contraction of the at least one serpentine segment along the axial direction,wherein each plate assembly includes a plurality of plates stacked with respect to each other, the at least one plate assembly defining a first flow configuration and a second flow configuration that is separate from the first flow configuration, the first and second flow configurations extending from the first end to the second end along the at least one serpentine segment so as to direct first and second fluids, respectively, through the at least one plate assembly; andb. a casing assembly that applies a tension force to the at least one plate assembly along the axial direction, such that, when the at least one plate assembly is exposed to at least predetermined temperature, each plate expands at least partially along the axial direction so as to reduce the tension force applied to the plate assembly. 2. The heat exchanger of claim 1, wherein the at least one plate assembly includes a first platform segment that defines the first end and a second platform segment that defines the second end, wherein the at least one serpentine segment extends between the first platform segment and the second platform segment. 3. The heat exchanger of claim 1, wherein the at least one serpentine segment is a first serpentine segment and a second serpentine segment that is separate from the first serpentine segment. 4. The heat exchanger of claim 1, wherein the at least one plate assembly is a first plate assembly and a second plate assembly, such that the first and second plate assembly can independently expand along the axial direction when exposed to at least the predetermined temperature. 5. The heat exchanger of claim 1, wherein the at least one plate assembly is a first plate assembly and a second plate assembly, and the first plate assembly and the second plate assembly are spaced apart with respect to each other along a vertical direction that is perpendicular to the axial direction. 6. The heat exchanger of claim 2, wherein the at least one plate assembly is a first plate assembly and a second plate assembly, and the heat exchanger further comprises a first intermediate block disposed between the first ends of the first and second plate assemblies, and a second intermediate block disposed between the second ends of the first and second plate assemblies, such that the first and second intermediate blocks separate the first plate assembly from the second plate assembly. 7. The heat exchanger of claim 1, wherein the at least one plate assembly is a first plate assembly and a second plate assembly, and the first plate assembly and the second plate assembly are spaced apart with respect to each other along the axial direction. 8. The heat exchanger of claim 1, wherein the first flow configuration includes a first inlet defined by the first end of the at least one plate assembly and a first outlet defined by the second end of the at least one plate assembly, wherein the second flow configuration includes a second inlet defined by the first end of the at least one plate assembly and a second outlet defined by the second end of the at least one plate assembly. 9. The heat exchanger of claim 8, further comprising a first pair of manifolds attached to the first end of the at least one plate assembly, and a second pair of manifolds attached to the second end of the at least one plate assembly, wherein the first pair of manifolds are aligned with a first pair of openings of the first and second flow configurations, wherein the second pair of manifolds are aligned with a second pair of openings of the first and second flow configurations. 10. The heat exchanger of claim 1, wherein the plurality of plates are stacked with respect to each other along a vertical direction that is perpendicular to the axial direction. 11. The heat exchanger of claim 1, wherein the plurality of plates are stacked with respect to each other along a lateral direction that is perpendicular to the axial direction. 12. The heat exchanger of claim 1, wherein each plate defines a first flow channel and a second flow channel that is separate from the first flow channel. 13. The heat exchanger of claim 1, wherein two different plates defines a first flow channel and a second flow channel that is separate from the first flow channel. 14. The heat exchanger of claim 12, wherein each plate includes a first platform, a second platform, and at least one serpentine segment that extends from the first platform to the second platform. 15. The heat exchanger of claim 14, wherein the at least one serpentine segment is a first serpentine platform and a second serpentine platform, and the first flow channel extends along the first serpentine platform, and the second flow channel extends along the second serpentine platform. 16. The heat exchanger of claim 12, wherein each plate includes opposed ends, a left side and a right side opposed to left side, wherein a first plate of the at least one plate assembly includes first and second flow channel inlets that are disposed closer to the left side than the right side, and first and second flow channel outlets that are disposed closer to the right side than the left side. 17. The heat exchanger of claim 16, wherein a second plate of the at least one plate assembly includes first and second flow channel inlets that are disposed closer to the right side than the left side, and first and second flow channel outlets that are disposed closer to the left side than the right side. 18. The heat exchanger of claim 17, wherein the first and second plates are alternatingly stacked such that first and second flow channels of each first plate define the first flow configuration, and the first and second flow channels of each second plate define the second flow configuration. 19. The heat exchanger of claim 12, wherein the each plate includes a lower surface and an upper surface opposed to the lower surface, wherein the lower surface is substantially planar, and the upper surface defines the first and second flow channels. 20. The heat exchanger of claim 13, wherein a portion of the first flow channel and the second flow channel are parallel to each other.
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