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Energy Efficiency Survey Aboard USS Princeton CG-59
The report finds that the USS Princeton's cruise-condition electric load of 2 MW could be reduced by 20–50%, potentially lowering total fuel use by 10–25%. The most significant savings are identified in motors, pumps, fans, chillers, and lighting. A critical finding is that current operational practices—specifically running two gas turbine generators (GTGs) in parallel at partial loads—negate approximately 75–80% of the fuel savings that would otherwise result from electrical load reductions. The report recommends transitioning to single GTG operation during routine cruise conditions, implementing Variable-Speed Drives (VSDs), and adopting premium-efficiency equipment. More intensive strategies, including the use of fuel-cell generators and low-speed electric propulsion, could potentially reduce total fuel use by roughly 75%.
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Document type: Report