German Aerospace Center (DLR) scientists propose integrating PV systems into cruise ships, aiming to improve efficiency and reduce fuel consumption. Simulations tested three DC configurations and revealed potential for significant energy savings through PV and battery storage integration.
Scientists from the German Aerospace Center (DLR) have proposed a novel approach to integrating photovoltaic (PV) systems into cruise ships, aiming to enhance efficiency and reduce fuel consumption. Recognizing the industry's shift towards direct current (DC) onboard grids, the researchers explored three distinct integration methods for PV systems.
Through simulations conducted aboard a cruise ship, they tested the performance of PV systems installed on balconies and evaluated the impact of different DC configurations. The studies encompassed two representative cruises, one in the Caribbean (March 2016) and another along the Norwegian coast (August-September 2016).The findings, published in a scientific journal, detail a suitable photovoltaic system for cruise ships, its integration into a DC grid, and the necessary battery storage capacity. Crucially, the research highlighted the potential for a synergistic effect between DC grids and battery storage, demonstrating a clear pathway towards increased energy efficiency and reduced reliance on fossil fuels. The researchers revealed that under optimal weather conditions, a PV system installed on a Helios class cruise ship could generate an average of 3.2 MWh per day in the Caribbean and 3.8 MWh per day along the Norwegian coast.To ensure a stable energy flow, the simulations emphasized the importance of a sufficiently large battery capable of bridging the 700 VDC output of the PV system to the 350 VDC distribution grid. This configuration optimizes the operation of any onboard generators, be they diesel engines or fuel cells. The proposed system involves installing two 250 W, 22%-efficient panels on each balcony cabin – one integrated into the glass barrier at a 90-degree angle, and the other affixed at a 30-degree angle beneath the balcony. This approach, if scaled to a Helios class ship with 1,655 balcony cabins, could yield a maximum output of 827.5 kW. Furthermore, the study underscored the need for sufficient battery capacity to ensure safe operation, recommending 161.4 Ah for the Caribbean cruise and 127.5 Ah for the Norwegian cruise. These findings pave the way for the widespread adoption of PV systems in the cruise industry, promoting sustainable maritime practices and reducing the environmental footprint of this sector.
Sustainability Energy PHOTOVOLTAIC CRUISE SHIP ENERGY EFFICIENCY SUSTAINABILITY DIRECT CURRENT BATTERY STORAGE
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