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Green drive on blue waters — solar power lights up naval vessel

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Kochi: February 12, 2017 02:31 IST
Updated: February 12, 2017 02:32 IST
http://www.thehindu.com/news/nation...er-lights-up-naval-vessel/article17290319.ece


TH12_SOUTH_NAVAL_SHIP



Way to go: Solar panels installed atop the helicopter hangar of the naval ship INS Sarvekshak. | Photo Credit: H. Vibhu


In a first, a warship of the Navy has turned to the sun to generate a share of its on-board power.

Naval survey vessel INS Sarvekshak, based at the Southern Naval Command in Kochi, has innovatively deployed the zero-maintenance solar power system, capable of generating 5.4KW electricity, by customising and installing ‘razor-thin, flexible’ solar panels on the canopy of its telescopic (retractable) helicopter deck. This replaces the ship’s traditional 4.4KW emergency diesel alternator, thereby slashing a yearly carbon emission of 60,225 kg and saving 22,995 litres of diesel for the Navy.

Low cost system
The project, taken up by the ship’s electrical wing headed by Commander Sreejith Tampi as part of an innovation drive, cost about ₹19 lakh, which is recoverable in under three years, Captain Rajesh Bargoti, commanding officer of the ship said.

“Rigid, glass-topped solar panels are unsuitable in the humid, salty marine environment, as they cannot withstand high wind speeds. They were found to be unfit for fitment on ships and they needed to be stationary for the sensors to receive sunlight. Conventional, fume-emitting batteries posed a further challenge, as they are not advisable over turbulent seas,” Capt. Bargoti explained to The Hindu on-board the survey ship on Saturday.

Given these constraints, the team then decided on the ‘light weight, extra-thin and flexible panels that would not break’.

“Imported from the U.S. through a local vendor, these panels have a maintenance free life for 24 years while the no-fume solid electrolyte batteries have a guaranteed life of 20 years. The ship is 15 years old and we hope the system stays through the vessel’s service life,” Capt. Bargoti said.

Once the panels got shipped in, trials yielded positive results and green signal was received from the headquarters to fix them over a 54-sq m area on the hangar canopy.

The industrial grade panels are found to be performing well in all-light conditions and are shade-tolerant.

The system is expected to save ₹8.98 lakh used to run the vessel’s emergency diesel alternator.
 
By: PTI | Kochi | Published:February 12, 2017 6:12 pm
ship-759.jpg

The estimated profit generated in a ship service life of 25 years is Rs 2.7 crore in this small project alone. (File)

http://indianexpress.com/article/india/ins-sarvekshak-goes-green-instals-solar-power-system-4520969/


Indian Navy’s survey vessel INS Sarvekshak has gone green by installing a solar power system on board. Navy said the system, equipped on the ship, works on sunlight and hence is 100 per cent reliable for power source that can be used for communication equipment, battery charging and general lightings onboard round the clock with battery outputs during night.

The system is “maintenance free” whereeas the the diesel generator requires regular maintenance, it said.

The estimated profit generated in a ship service life of 25 years is Rs 2.7 crore in this small project alone. “Even if the system is used four 25 days in one year, the system can repay its cost in less than 10 years while protecting the nature,” the Navy said. Navy claimed that by installing 5 KW solar power system, it avoids around 165kg of carbon a day, 60,225 kg of carbon a year plus 22,995 litres of diesel.

“So in its 25 years life the total carbon saved is around 15 lakhs kg and 5.75 lakh litres of diesel by this innovation,” it said.

A Navy spokesman said this is a “unique activity hitherto never attempted on any warship in India…perhaps not even abroad on warships.”

He said solar power in a marine environment is a great challenge. Noting that the world is looking for clean, renewable and sustainable sources of energy in order to protect and reduce the harm caused to the environment, the Navy said the deterioration of the environment is highly correlated to the production and usage of fossil based fuels worldwide.

The Navy said it has created a new mechanism to encourage the utilization and development of renewable energy resources.
 

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