Page 47: of Marine News Magazine (January 2020)

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Put to the test with non-contact RPM sensors to independently monitor

Consulting ? rm M.J. Bradley & Associates (MJB&A), engine speed.

acting as an independent third-party, compared the Chris- During idle testing, MJB&A found the HybriGen Power topher M. Parsonage’s “baseline” and “hybrid” fuel con- system yielded a savings of 2.81 gallons per hour (approxi- sumption while idle and in-use during normal operations mately 12.5% savings), when compared against both main up and down the Mississippi River over the course of sev- engines and auxiliary generator set in the baseline condition.

eral weeks in the summer of 2019. While in use, the HybriGen Power system provided a

During baseline testing, the HybriGen system was un- fuel consumption bene? t ranging from 13% to 32% for clutched and disconnected from the main switchboard, hotel power generation, MJB&A said. Over the entire test leaving both main engines and one auxiliary generator in period, the hybrid system averaged a 25% decrease in fuel operation. When studying the hybrid con? guration, both use for hotel load.

main engines as well as the HybriGen system were active, On average for a typical 13-day roundtrip, MJB&A esti- and both auxiliary generator sets were disconnected from mates that the HybriGen Power system can save more than the main switchboard and turned off. 570 gallons compared against the baseline auxiliary genset.

Under both con? gurations, fuel consumption of each Assuming the vessel makes 26 roundtrips per year, total engine was monitored and logged using fuel metering annual fuel savings could be more than 14,800 gallons.

equipment, and the main propulsion engines were ? tted 47 www.marinelink.com MN