PORRITTINC
( LAYTON, UT )
SPECIFICATION · BALANCE OF PLANT

Power
conversion
specification.

Supercritical CO₂ Brayton cycle converting blanket heat to grid electricity, using printed-circuit heat exchangers and integrally geared turbomachinery in a compact energy island.

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DESIGN TARGET · NOT MEASURED PERFORMANCE

Figures on this page are engineering design targets and reference-architecture values, not measured results from operating hardware. They state what the design is being engineered to achieve. Verified performance data will replace them as systems are built and tested. Nothing here should be relied upon as a performance warranty.

Design basis
CYCLE

Recompression sCO₂ Brayton

Recompression configuration recovers low-grade heat that a simple cycle rejects, which is where most of the efficiency advantage over steam originates.

EXCHANGERS

Diffusion-bonded PCHE

Printed-circuit exchangers handle cycle pressure and temperature at a fraction of shell-and-tube volume, and tolerate faster thermal transients.

TURBOMACHINERY

Integrally geared

Compact rotating equipment matched to sCO₂ density. Machine protection is local and fast; supervision is at the cycle level.

HEAT REJECTION

Dry-cooling option

Air-cooled rejection is specified as an option so siting is not gated on water rights. It costs efficiency on hot days and that penalty is designed in, not discovered.

Design targets
47%
Cycle efficiency target
941 MWe
Net electric target
sCO₂
Working fluid
DRY
Cooling option
Interfaces

Hot side interfaces the intermediate exchanger; cold side interfaces heat rejection. Electrical output interfaces generator step-up per the plant electrical specification. Cycle supervision, ramp limiting, and fatigue accounting are performed by the plant intelligence layer rather than by isolated loop controllers.

Discuss the details.

Specifications evolve as the design matures. Contact us for current status and integration requirements.

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