10 Updates

Submarine Drones Drive Demand For Subsea Power Plants

May 18 2014, 12:51am CDT | by

On March 21, 2003, the second Gulf War began with an amphibious assault on the Iraqi city of Umm Qasr, a small strategically important port on the Kuwaiti border. The battle lasted only a few days...

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10 weeks ago

Submarine Drones Drive Demand For Subsea Power Plants

May 18 2014, 12:51am CDT | by

On March 21, 2003, the second Gulf War began with an amphibious assault on the Iraqi city of Umm Qasr, a small strategically important port on the Kuwaiti border. The battle lasted only a few days and was followed by a massive effort to remove underwater mines and clear a lane for delivery of ships to deliver humanitarian supplies.

Unmanned undersea vehicles (UUVs), or submarine drones , were instrumental in the demining effort, which is one of several reasons the U.S. Navy is funding research on advanced UUVs and subsea power systems to support them for long periods of time.

The “Persistent Renewable Energy for Undersea Systems (PREUS)” program is one of the more intriguing concepts begin considered by the Office of Naval Research . The PREUS program is developing generators that will be able to convert heat from geothermal vents on the ocean floor into electric power.

The objective is to extend the service life of UUVs by resupplying their energy in-situ. In other words, UUVs may soon be doing a lot more than detecting underwater mines.

The U.S. Navy ’s key transformation plan, called Sea Power 21 , suggests that advanced UUVs will not only shape the future battlespace but will enhance the entire “kill chain” from surveillance to time-critical strikes.

Subsea generators are considered to be critical enablers for achieving this ambitious vision. The preferred fuel is thermal energy from hydrothermal vents.

A hydrothermal vent is a fissure in the planet’s surface that emits huge amounts of heat. They are commonly found on ocean ridges near volcanically active places where localized temperatures regularly reach as high as 600 Fahrenheit. These high temperatures make the vents compelling candidates for geothermal energy.

There are 40,000 miles of ocean ridges that are constantly recharging their thermal activity by the uprising of magma, according to some studies. They represent 30% of all heat released by the earth. So far about 20% of the world’s ocean ridges have been studied. These studies have identified nearly 300 hydrothermal vents located at depths of 6,500 to 8,000 feet.

“The main conclusion is that the available (supposedly reasonable) geothermal power that could be generated from well known hydrothermal vent sites in some of the ocean ridges is of the same order of magnitude of the EGS geothermal power that eventually can be produced in the whole world,” according to a study by researchers from the Universidad Nacional Autonoma de Mexico .

The study evaluated the technical feasibility of tapping this energy source by siting submarine generators above the vent to run an organic Rankine cycle thermal plant. The economic and environmental barriers are huge, but so is the military’s budget.

 
Update
10

7 weeks ago

RM47mil KWSG contributions still unclaimed

Jun 9 2014 7:54am CDT | Source: Business Times Malaysia

KUALA LUMPUR: About RM47 million of contributions in the Teachers Provident Fund (KWSG) still remain unclaimed, the D ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
9

7 weeks ago

Gold shop lost almost RM1mil

Jun 9 2014 3:50am CDT | Source: Business Times Malaysia

KANGAR: A gold shop owner lost almost RM1 million after after the safe on in his shop was broken into b ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
8

7 weeks ago

Motion to debate MAS losses in Dewan Rakyat rejected

Jun 9 2014 3:39am CDT | Source: Business Times Malaysia

KUALA LUMPUR: AN emergency motion to debate the losses incurred by Malaysia Airlines last year, amounting to RM1.2 billion was rejected by the Dewan Rakyat tod ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
7

7 weeks ago

MH370 Tragedy: Hisham: RM27.6 mil spent on 1st phase of SAR

Jun 9 2014 2:11am CDT | Source: Business Times Malaysia

KUALA LUMPUR: Malaysia spent some RM27.6 million in its first phase of the search operations for missing Malaysia Airline flight MH370, said Acting Transport Minister, Datuk Seri ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
6

7 weeks ago

9.1m litres of diesel seized in a month

Jun 8 2014 1:11am CDT | Source: Business Times Malaysia

PUTRAJAYA: The Domestic Trade, Cooperatives, and Consumerism ministry has seized some 9.1 million litres of diesel and property worth RM58 million since mounting ‘Operasi Diesel Selatan’ in the southern states last month. ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
5

7 weeks ago

Girl, 9, awarded RM2.78m compensation for medical negligence

Jun 6 2014 4:56am CDT | Source: Business Times Malaysia

KUALA LUMPUR: A nine-year-old girl who suffered brain damage during her birth at a government hospital was awarded over RM2.78 million in ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
4

7 weeks ago

Malaysia's total trade in April up 12pc

Jun 5 2014 11:52pm CDT | Source: Business Times Malaysia

KUALA LUMPUR: Malaysia's total trade in April 2014 rose by 12 per cent from a year ago to RM123.86 billion due to growing trading activities, International Trade and Industry Minister Datuk Seri Mustapa ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
3

7 weeks ago

Works Ministry to spend RM20m for upgrading works at 50 accident black spots

Jun 4 2014 11:35pm CDT | Source: Business Times Malaysia

JOHOR BARU: The Works Ministry will implement upgrading works at 50 accident prone locations in the country that have been identified this year involving ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
2

7 weeks ago

Najib launches loan scheme for Ramadan traders

Jun 4 2014 10:24pm CDT | Source: Business Times Malaysia

PUTRAJAYA: Prime Minister Datuk Seri Najib Razak today launches RM45 million Ramadan B ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 
Update
1

8 weeks ago

Residents bring up objection against Kidex to Suhakam

Jun 4 2014 4:49am CDT | Source: Business Times Malaysia

PETALING JAYA: A group of 20 Petaling Jaya residents held a meeting with the Human Rights Commission of Malaysia (Suhakam) over their objection against the proposed RM2.2 billion Kinrar ...
Source: Business Times Malaysia   Full article at: Business Times Malaysia
 

 

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