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Old 11th January 2017, 18:58   #1
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Default Kerala to soon get solar-powered boat

A solar powered boat, christened 'Aditya' would be launched shortly in Kerala to ferry passengers from Vaikom in Kottayam District to Thavanakkadavu in Alappuzha District.
The boat is presently moored at the wharf at Vaikom, hoping to set sail soon.
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Kerala to soon get solar-powered boat-boat-2.jpg  


Last edited by rajeev k : 11th January 2017 at 19:13.
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Old 11th January 2017, 19:07   #2
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Default re: Kerala to soon get solar-powered boat

Details:

https://en.wikipedia.org/wiki/Aditya_(boat)

What particular interested me:

Quote:
The total energy needed to operate the ferry for 5.5 hours is 110 kWh (20 kW is average power). 1 kW solar panels produce 4 kWh of energy per day, factoring the system efficiency and standard sun of the location of 5.72 (average through out the year). Hence the energy from solar panels is 80 kWh. The gap in energy is provided by lithium battery that can provide up to 40 kWh (80% discharge) from a total capacity of 50 kWh. The lithium batteries are fully charged in the morning because of overnight grid charging.[8]

A trip between the two boat points takes 15 mts and it needs energy of 5 kWh. Hence a total of 22 trips can be made daily transporting 1,650 people daily, or 580,000 people every year without burning fuel.
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Old 11th January 2017, 19:33   #3
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Default re: Kerala to soon get solar-powered boat

Mod note: Thread moved to Commercial Vehicles.
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Old 1st July 2017, 10:29   #4
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Default Re: Kerala to soon get solar-powered boat

Traveled on this boat two days back.
The Interior of the non polluting boat, on a cruise, ferrying commuters across the Vembanad Lake, between Vaikom & Thavanakkadavu.
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Old 2nd July 2017, 13:19   #5
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Default Re: Kerala to soon get solar-powered boat

Quote:
Originally Posted by rajeev k View Post
A solar powered boat, christened 'Aditya' would be launched shortly in Kerala to ferry passengers from Vaikom in Kottayam D
Quote:
Originally Posted by libranof1987 View Post
Details:

https://en.wikipedia.org/wiki/Aditya_(boat)

What particular interested me:
Thank you for sharing this most interesting boat. Solar power for inland and coastal water transport can be a real alternative because the power needed top pull a floating object (ie the boat) is very small if speeds are kept low. In water, speed and power have a cube co-relation. Reduce speed 5 times and power needed drops 125 times and vice versa. So a boat with a full load displacement of 50 tonnes would needed roughly 40 to 60 bhp to cruise at about 8 knots ~ 15 kmph. For coastal & inland work a 50 tonne boat is big and 15 kmph is a jolly decent speed for a coastal boat. So long as speed needs are kept low the sun can work very well. To provide a reference for those have done the ferry from Apollo Bunder (Gateway) to Elephanta - those boats cruise at about 6 to 7 knots.

Also relative to size boats (or ships) can carry a greater weight of batteries than a wheeled vehicle. And of course submarines have been (partially) battery powered for a century.

Last edited by V.Narayan : 2nd July 2017 at 13:48.
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Old 2nd July 2017, 16:20   #6
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Default Re: Kerala to soon get solar-powered boat

Turanor PlanetSolar is the largest solar-powered boat in the world. In May 2012, it became the first solar electric vehicle (of any kind) ever to circumnavigate the globe. The 31-metre boat is covered by 537 sq metres of solar panels run two electric motors, one in each hull. There are 8.5 tons of lithium-ion batteries in the ship's two hulls. The boat's twin hull ie catamaran hull gives it a top speed of 14 knots (26 km/h) and a cruise speed of 10 knots (18 kmph). In 2013 she crosed the Atlantic back and forth. All this on solar power only. We live in exciting times.

Displacement: 85 tonnes
Length: 31 metres (35 with panels opened out)
Beam (or width): 15 metres (or 23 with panels opened out)
Top speed: 26 kmph (or 14 knots)
Engines: Electric Motors -2 x 60 kw for speed and 2 x 10kw for cruising
Fuel: Solar energy
Range: limited by crew endurance and food supply!!

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The boat with its twin hull design for speed, stability and ample deck surface area. Think of Karl Benz in 1885 or Wright Flyer in 1903. We are looking at a step into the future. Sceptics beware.

Kerala to soon get solar-powered boat-solar-2.jpg
View from the top when sailing on the seas with solar panels fully open. In harbour the outer panels slide in to aid maneuvering and berthing. The size of the ship can be gauged by the three crew men on deck.

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The seals say they approve! Mr. Trump please note.

Dear Rajeev K thank you for letting me go a wee bit off topic.

Last edited by V.Narayan : 2nd July 2017 at 16:28.
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