A heat recovery steam generator (HRSG) includes a base and a top platform assembly disposed on the base. The top platform assembly includes a first top platform auxiliary module having a first rectangular frame in which a steam manifold is disposed, a second top platform auxiliary module having a second rectangular frame in which a high pressure (HP) drum is disposed, and a third top platform auxiliary module having a third rectangular frame in which a low pressure (LP) drum and an intermediate pressure (IP) drum are disposed. Each top platform auxiliary module may be pre-assembled on the ground prior to be raised to elevation for installed on the base.

A heat recovery steam generator (HRSG) includes a base and a top platform assembly disposed on the base. The top platform assembly includes a first top platform auxiliary module having a first rectangular frame in which a steam manifold is disposed, a second top platform auxiliary module having a second rectangular frame in which a high pressure (HP) drum is disposed, and a third top platform auxiliary module having a third rectangular frame in which a low pressure (LP) drum and an intermediate pressure (IP) drum are disposed. Each top platform auxiliary module may be pre-assembled on the ground prior to be raised to elevation for installed on the base.

A heat recovery steam generator (HRSG) includes a base and a top platform assembly disposed on the base. The top platform assembly includes a first top platform auxiliary module having a first rectangular frame in which a steam manifold is disposed, a second top platform auxiliary module having a second rectangular frame in which a high pressure (HP) drum is disposed, and a third top platform auxiliary module having a third rectangular frame in which a low pressure (LP) drum and an intermediate pressure (IP) drum are disposed. Each top platform auxiliary module may be pre-assembled on the ground prior to be raised to elevation for installed on the base.

This disclosure provides flow components, methods of additive manufacture, and output manifolds for heat recovery steam generators incorporating flow components. A flow component may include an annular wall that defines a flow path for a fluid. The annular wall may have a normative region and a stress region. The annular wall in the stress region may include a continuous skin to form a portion of the interior wall surface and an additive manufactured mesh adjacent to the continuous skin to the interior of the annular wall. The annular wall in the normative region may have a cross-section with a different structure than the stress region.

This disclosure provides manifolds, manifold components, and heat recover steam generator systems. An output line of an output manifold is fluidically connected to at least one downstream process. A first collection line is fluidically connected to a plurality of header lines by a first set of header links. A second collection line is fluidically connected to the plurality of header lines by a second set of header links. A connecting junction fluidically connects the first collection line and the second collection line to the output line.

This disclosure provides flow components, methods of additive manufacture, and output manifolds for heat recovery steam generators incorporating flow components. A flow component may include an annular wall that defines a flow path for a fluid. The annular wall may have a normative region and a stress region. The annular wall in the stress region may include a continuous skin to form a portion of the interior wall surface and an additive manufactured mesh adjacent to the continuous skin to the interior of the annular wall. The annular wall in the normative region may have a cross-section with a different structure than the stress region.

This disclosure provides manifolds, manifold components, and heat recover steam generator systems. An output line of an output manifold is fluidically connected to at least one downstream process. A first collection line is fluidically connected to a plurality of header lines by a first set of header links. A second collection line is fluidically connected to the plurality of header lines by a second set of header links. A connecting junction fluidically connects the first collection line and the second collection line to the output line.

A heat recovery steam generator (HRSG) includes a base and a top platform assembly disposed on the base. The top platform assembly includes a first top platform auxiliary module having a first rectangular frame in which a steam manifold is disposed, a second top platform auxiliary module having a second rectangular frame in which a high pressure (HP) drum is disposed, and a third top platform auxiliary module having a third rectangular frame in which a low pressure (LP) drum and an intermediate pressure (IP) drum are disposed. Each top platform auxiliary module may be pre-assembled on the ground prior to be raised to elevation for installed on the base.