percentage of the tour market chooses to take vacations aboard smaller vessels that sail the inland waterways. These vessels typically sail only during daylight hours and lay over at river ports during the overnight hours when it becomes possible to recharge onboard grid- scale batteries at off-peak power rates. Battery powered river cruise vessels could attract the eco-tourist segment of the market. These vessels also make stops at points of interest to allow customers to visit local attractions while batteries undergo a partial recharge.


The sheer weight of grid-scale batteries carried at low elevation in the vessel provides added stability during daylight sailing hours when the majority of passengers may occupy the highest elevations of the vessel. From such a location and courtesy of the low speed of sailing, the customers might enjoy more of the scenery along the passing coastline. The combination


of low-speed sailing, overnight stops and a few short duration daytime stops including at navigation locks allows the vessel to provide service to the customers while also regularly partially and fully recharging the batteries.


SHORT-DISTANCE OCEAN SERVICE


The research underway at NUS offers the prospect of electrically powered ships sailing short distance ferry services across ocean, such as Dublin - Liverpool and Belfast - Liverpool across the Irish Sea, Helsinki - Tallinn across the Gulf of Finland, Helsinki - Stockholm across the Baltic Sea, Foo Chow/Amoy - Taiwan across the Taiwan Strait, Jeddah - Port Sudan across the Red Sea, Buenos Aires - Montevideo across Rio de la Plata, Wellington - Picton across Cook Strait, Victoria - Tasmania across Bass Strait and several Mediterranean ferry services such as Nice - Corsica, Athens - Crete,


Rome - Sardinia and Barcelona/ Valencia - Balearic Islands.


CONCLUSIONS


While makers of long-life grid-scale electrical storage batteries are focusing exclusively on stationary installations, the same battery technology may actually have a mobile application providing propulsive energy for a small variety of maritime vessels that sail the inland waterways. While flow redox batteries and molten metal batteries would be impractical for road and railway propulsion, these technologies might find application in maritime propulsion.


WEB RESOURCES


Ambri Battery: www.ambri.com Cell-Cube: www.cellcubeenergystorage.com NUS (Singapore): https://nus.edu/2XT71ZA


General Layout of Redox Flow Battery Membrane


Cell Stack Tank of Electrolyte


Tank of Solid


Material


Pump Battery Power Supply


Pump


64 | The Report • September 2019 • Issue 89


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88