Friday , April 23 2021

For more energy-efficient powerful ships



Credit: Skitterphoto

An EPFL researcher has developed a system that is based on fossil cells to reduce the co-operative and energy consumption of cruisers, which are always popular with staying in one's world.


Finding a few weeks with the sight of a lucrative loan is an idea that makes a growing number of people, especially in Asian countries. But crafty ships will not only sail from port to port: earning sophisticated floating hotels with several hundred passengers, they consume a lot of energy for homes, electricity, climate, and various other aspects of life on board. To make more environmentally friendly, Francesco Baldi, a researcher at EPFL's Industrial Process and Energy Systems Engineering Group (EPES), has come up with a novel solution.

Reducing ship's carbon footprint

"It is easier to reduce the power consumption of a shipping company, because it uses almost all power for propulsion, in contrast to a crusade, which has several power capabilities," says Baldi. "Reduce my work focused on CO2 emisgings, in first instance by optimizing each of the ship's system and the design of & # 39; a boat itself, to improve efficiency. "This first move made a potential 6-10% reduction in CO."2 emit for a diesel-powered ship.

Although it was important, this wasn't enough for Baldi, so he said alternatives to diesel engines. In a collaborative project with the Aalto University in Finland, he looked at the use of aircraft on a ship. That asked him to face the special challenges that were created when they were to be repackaged for thousands of miles. "You have to go on board enough energy without taking up too much space. Hydrogen gasoline is not suitable, because getting enough power to travel long distances takes up a lot of space – about a third of the capacity of & # 39; 39, the ships – which is not realistic for a cruise ship, "says Baldi.

Save energy

Although they need high temperatures to work and pick up 20 hours to fix, fixed oxy-gasoline cells (SOFCs) are a good fit for ships. All that was needed was to use the overpower energy you created because of their use, which is not needed according to the long start-up times. This is where & # 39; t Baldi was: his idea was to use a system developed in the EPFL to process unused energy in water. The resultant fossil cells, adapted for ships, could thereby generate electricity on board or hydrogen which is used for special use. This concept is especially good for cruise ships, according to Baldi.

One of the advantages of cell phones is that they only produce CO2 and water, other than a diesel engine that also causes other damage, such as nitrogen oxides and particulate matter. Fuel cell generates power as a chemical reaction. This makes it much more environmentally friendly than fossil fuels – and also more efficient: the fuel cells that developed in EPFL have required 75% efficiency as much as 50% for even the most efficient diesel engine.

The only concern is that fossil cells cost ten times more than a traditional bike. "However, the prices will fall as the demand increases. Also, the long-covered cost is only 20-30% higher than that of a traditional bike, and the inclusion of this clean type of fuel will improve the image of the ship operators." When arranging arrangements in this area, you also see the potential for Europe, where most of the crosswords are built, parts of the cost of promoting ships with benzene. "This approach, which works for solar panels, could help help ships in a sharp future," says Baldi.


Further develop:
Dead fish to get Norwegian crossbones

More information:
Francesco Baldi et al. A generation base based on solid technology and Proton Exchange Exchange microphone balls with hybrid storage for off-grid applications, Frontiers in energy research (2019). DOI: 10.3389 / filrg.2018.00139

Delivered by:
Ecole Polytechnique Federale de Lausanne


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