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Herkúles

Vindknúin stóreflis farþegaskip á leið til landsins....

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Bílar án jarðefnaeldsneytis eru staðreynd, aðrar tegundir samgangna þarf líka að losa undan oki jarðefnaeldsneytisins

Þeir segja það mikinn hausverk að minnka mengun frá þotum, bátar og ferjur ættu að geta gengið fyrir rafmagni, skip kannski fyrir vetni sem framleitt er með rafmagni

eða: ferðamenn framtíðarinnar sigli hingað seglum þöndum líkt og ,,þeir gömlu" Um borð mætti líka framleiða rafmagn með vindafli til notkunar innan borðs...

Til vonar og vara ef logn dettur á þyrftu þó að vera vetnisknúnar vélar frekar en breyta fleyinu  í stóra galeiðu...

Væri það fögur sjón að sjá fyrsta stærðar-vindknúna farþegaskipið sigla seglum þöndum og leggja að hafnarbakkanum í Sundahöfn,

(og færi vel að nefna það Grétu...)

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Það er greinilegt að Herkúles er ekki mikill verkfræðingur.
Til þess að geta knúið áfram stór farþegaskip þarf GRÍÐARLEGA stór segl.
Og þegar komin eru GRÍÐARLEGA stór segl, þá er ekki mikið pláss fyrir vindmyllur, er það Herkúles?

En ef Herkúles finnur leiðir framhjá þessum agnúum, RISASTÓR segl, og RISASTÓRAR vindmyllur upp fyrir seglin, hvernig á að redda þyngdarpunktinum og koma í veg fyrir að skipin velti við minnstu hreyfingu?

En auðvitað, ef þetta er í gospelinu skv Grétu geðveiku, þá er þetta auðvitað hægt, þó það sé ekki hægt.
Ef þetta er ekki hægt, þá er bara að skattleggja þar til þetta er hægt.

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...það þarf meiri pening í rannsóknir og nýsköpun á þessi sviði (það eru  til ýmislegar vindorkustöðvar, ef út í það er farið:))

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54 minutes ago, Herkúles said:

...það þarf meiri pening í rannsóknir og nýsköpun á þessi sviði (það eru  til ýmislegar vindorkustöðvar, ef út í það er farið:))

Og aftur erum við sammála Herkúles, lá vakandi núna bara í nótt og hugsaði að ég ætti að stofna þráð á Tækni og vísindi um möguleikann á kjarnorkuknúnu varðskipi. Hværi það mikil fjárfesting? Hvað myndi það kosta? Hvernig kjarnorku ofn og svoleiðis? 

Mér skilst að svona kjarnorkuofnar framleiði rafmagn sem er svo notað í rafmagnsmótor til þess að knýja skipið. Hægt að setja það upp svo að það geti farið á staði þar sem rafmagnið fer vegna náttúruhamfara og tengja það inn á netið eða eitthvað svoleiðis.

Ef að það er ekki nýsköpun og engir togarar í hvert pláss þá veit ég ekki mikið, nýsköpun væri það!!

Og svei mér þá, held bara að ég noti þennan þráð fyrir þennan boðskap minn. Þakka þér fyrir Herkúles, þú minn maður.

Over 140 ships are powered by more than 180 small nuclear reactors and more than 12,000 reactor years of marine operation has been accumulated.

https://www.mofa.go.jp/region/n-america/us/security/fact0604.pdf

U.S. Nuclear Powered Warships (NPWs) have safely operated for more than 50 years without experiencing any reactor accident or any release of radioactivity that hurt human health or had an adverse effect on marine life. Naval reactors have an outstanding record of over 134 million miles safely steamed on nuclear power, and they have amassed over 5700 reactor-years of safe operation.

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5 hours ago, Herkúles said:

eða: ferðamenn framtíðarinnar sigli hingað seglum þöndum líkt og ,,þeir gömlu" Um borð mætti líka framleiða rafmagn með vindafli til notkunar innan borðs...

Til vonar og vara ef logn dettur á þyrftu þó að vera vetnisknúnar vélar frekar en breyta fleyinu  í stóra galeiðu...

Væri það fögur sjón að sjá fyrsta stærðar-vindknúna farþegaskipið sigla seglum þöndum og leggja að hafnarbakkanum í Sundahöfn

En hvað með kjarnorkuknúin skip? Nú þegar eru mörg herskip kjarnorkuknúin. Kafbátar, flugmóðurskip, jafnvel ísbrjótar. Væri kannski hægt að búa til kljúfa sem ganga fyrir Thorium? Til að knýja skip, stór skip, af hvaða sort sem er?

Þetta er á sama tíma og 15 stærstu flutningaskip heims menga jafn mikið og allur bílafloti heimsins.

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kjarnorka telst ekki sjálfbær orkugjafi

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2 minutes ago, Herkúles said:

kjarnorka telst ekki sjálfbær orkugjafi

Og af hverju ekki?  Nóg til af geislavirkum efnum.  Nægir staðir til að geyma úrgang.

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Ísland stend­ur sig mjög vel í orku­skipt­um í sam­göng­um og er á toppi lista Nordic Energy Reaserch ásamt Nor­egi í raf­bíla­væðingu. Þetta kem­ur fram í skýrslu Nordic Energy Rese­arch.

Þar er mat lagt á fram­vindu Norður­land­anna í átt að kol­efn­is­hlut­leysi árið 2050 og hvort ríkj­un­um miði nægi­lega hratt áfram í átt að mark­miðinu, en mörg hver hafa þó sett sér mark­mið um kol­efn­is­hlut­leysi árið 2040.

Sam­kvæmt skýrsl­unni þurfa rík­in þó að leggja sig meira fram til að ná mark­miðunum, en ein­ung­is en nægi­leg­ur hraði á orku­skipt­um í raf­orku­fram­leiðslu land­anna. Þar stend­ur Íslands sig vel og los­ar fru­morku­notk­un Íslands minnst­an kolt­ví­sýr­ing af Norður­lönd­un­um.

Því bein­ast orku­skipt­in hér að öðrum geir­um, svo sem sam­göng­um á landi og á haf­inu þar sem jarðefna­eldsneytið er enn alls­ráðandi eins og ann­ars staðar í heim­in­um. 

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3 hours ago, Herkúles said:

kjarnorka telst ekki sjálfbær orkugjafi

Beggars can't be choosers. Ég hélt að "hamfarahlýnun" væri í gangi og það  það þyrti að lýsa yfir neyðarástandi. En þarf lausnin í "neyðarástandinu" að vera fullkomin til að sú leið sé farin. Ég sé fyrir mér, það kviknar í húsi en það vill enginn fara niður neyðarstigan af því að það er ekki rauður dregill þar ;) .

Annars, ef við ætlum að afla orku einungis með sjálfbærum hætti, og kaldur samruni er ekki komin enn, þá er 15% niðurskurður bara hófsöm tala. Vertu velkomin, hungursneyð.

Kjarnorka gefur ekki frá sér CO2. Er ekki CO2 vandamálið?

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5 hours ago, fleebah said:

En hvað með kjarnorkuknúin skip? Nú þegar eru mörg herskip kjarnorkuknúin. Kafbátar, flugmóðurskip, jafnvel ísbrjótar. Væri kannski hægt að búa til kljúfa sem ganga fyrir Thorium? Til að knýja skip, stór skip, af hvaða sort sem er?

Þetta er á sama tíma og 15 stærstu flutningaskip heims menga jafn mikið og allur bílafloti heimsins.

Þarna er reyndar verið að tala um sót og súlfur mengun.   Stærstu skip nota enn svartolíu sem brennur með meiri sót og agna mengun en betur hreinsað eldsneyti eins og díselolía.   Þessi skip nota hins vegar ekki nema brot af því eldsneyti sem bílaflotinn brennir.   https://newatlas.com/shipping-pollution/11526/

Olíuverð er of lágt, æskilegt verð væri milli $80-100 tunnan.   Nógu hátt til að fólk hugsar áður en það notar oliuna, sparneytni eykst,  endurvinnanlegir orkugjafar vinna á en hagkerfið fer ekki á hausinn.   Kjarnorka kæmi þá vel til greina fyrir svona stór flutningaskip, menn hafa verið of ragir við að þróa minni kjarnorku kerfi.   Minni áhugi og vanmetið erfiðleika stig hefur hindrað framfarir.   Hérna er til dæmis grein frá 2007 um afbragðs kjarnorkukerfi sem myndi duga fyrir 20-30 hús eða miðlungstórt skip.   Átti að vera komið á markað 2008 en er ekki enn https://www.engadget.com/2007/12/19/toshibas-building-a-micro-nuclear-reactor-for-your-garage/

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3 tímum síðan, fleebah said:

Kjarnorka gefur ekki frá sér CO2. Er ekki CO2 vandamálið?

Herkúles ætlar að fá Vicky Pollard til að svara þessu fyrir sig.
Yeah.. but.. no.. but..
 

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SkySails

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This article's factual accuracy may be compromised due to out-of-date information. Please update this article to reflect recent events or newly available information. (May 2016)

A prototype kite (production kites have areas of hundreds of square meters)

SkySails GmbH & Co. KG is a Hamburg-based company that sells kite rigs to propel cargo ships, large yachts and fishing vessels by wind energy. Ships are pulled by an automatically-controlled foil kite of some hundreds of square meters. For multiple reasons, they give many times the thrust per unit area of conventional mast-mounted sails.

The systems save fuel, and reduce carbon emissions and shipping costs, but have not been widely adopted.[1][2]

Contents

1 Technology

2 Operational history

3 Business

4 See also

5 References

6 External links

Technology[edit]

The SkySails propulsion system consists of a large foil kite, an electronic control system for the kite, and an automatic system to retract the kite.

The kite, while 1-2 orders of magnitude larger, bears similarities to the arc kites used in kitesurfing. However, the kite is an inflatable rather than a ram-air kite.[citation needed] Additionally, a control pod is used rather than direct tension on multiple kite control lines; only one line runs the full distance from kite to ship, with the bridle lines running from kite to control pod. Power to the pod is provided by cables embedded in the line; the same line also carries commands to the control pod from the ship.[3]

The kite is launched and recovered by an animated mast or arm, which grips the kite by its leading edge. The mast also inflates and deflates the kite. When not in use, mast and deflated kite fold away.[3]

A conventional ship with a SkySail-system burns less fuel, and has two propulsion methods, making it a type of hybrid vehicle. SkySail kite propulsion from upper wind power is a traction use of high altitude wind power. Up to 100 million tons of carbon emissions every year could be saved by widespread use of SkySails technology, according to the International Maritime Organization.[2]

Other companies, such as California-based KiteShip, have built similar technology.[1]

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Why does a monster cargo ship with engines bigger than your house need SAILS?

 

'Kite-surfing' boats could become commonplace as firms face rising fuel bills

Shipping firms look into kites as a way of slashing rising cargo ship fuel bills

The kites can cut the amount of diesel a vessel burns by up to 20 per cent 

10,000 square foot sails will pull giant 1,000ft vessels through the waves

By Michael Goodier For The Mail On Sunday

Published: 22:24 BST, 16 December 2017 | Updated: 17:03 BST, 17 December 2017

 

It may seem a bizarre sight – a big modern cargo ship flying an oversized 'kite-surfing' sail.

But this scene could become commonplace on the world's oceans as shipping firms battle to slash fuel bills.

Set flying when the wind is strong enough, and attached to the ship by thick cables, the sails can cut the amount of diesel a vessel burns by as much as 20 per cent. 

Maritime shipping each year pours out about a billion tons of the gases linked to global warming.

 

Cargo ships with 10,000sq ft sails could be introduced in a bid to battle rising fuel bills

In an innovation that promises to reverse the 19th Century moment when steam engines replaced wind power, sails currently in development will ultimately unfurl to as much as 10,000 square feet to pull giant vessels up to 1,000ft long through the waves.

One system is already in use, created by German company SkySails. Its sail – seen fitted to a 430ft cargo vessel in our picture – can unfurl to 90ft wide. 

 

With its long cables giving it access to the stronger winds hundreds of feet up, it can achieve the power equivalent of an airliner, leaving a ship's 20ft-high engines idle.

French company AirSeas has designed a similar fully automated system that unfurls at the push of a button. 

The SeaWing is attached to large ships by a 1,200ft cable and is partly inspired by kite-surfing. 

It has been suggested that when the wind is strong enough it could cut the amount of diesel a vessel burns by 20 per cent 

The engineers who developed the SeaWing system are all employees of aircraft manufacturer Airbus, and AirSeas CEO Vincent Bernatets said: 'They looked at the automatic technology of take-off and landing in an aircraft and thought, "Why aren't we developing technology like this for a sail on a boat?' 

Computers on board will take the vessel along the best routes for wind and fuel efficiency.

AirSeas have recently tested a smaller kite on a cargo ship between the Bay of Biscay and England. Mr Bernatets said: 'We are in good shape. We are now analysing the results, but for the time being we are confident.

'At the end of this year we will be able to take the final decision to launch or not.'

Kite-sail makers calculate that ship owners buying the systems will get the cost back within two years through fuel savings. 

 

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Breakthrough in green shipping: the Japanese KAWASAKI KISEN KAISHA, LTD. (“K” LINE) signs for up to 50 automated kites from AIRSEAS

Oslo, Norway: After 2 years of close technical and business cooperation, KAWASAKI KISEN KAISHA, LTD. (“K” LINE) announces a 20-year agreement with AIRSEAS to install and service one ship with Seawing, an automated kite based on parafoil technology used to tow commercial ship and reduce CO2 by 20% through wind propulsion. Once the first Seawing is successfully delivered, “K”LINE will contemplate to order up to 50 additional Seawing. “Seawing represents a breakthrough for our industry and for the environment. “K”LINE is proud to demonstrate its commitment to the global environment by applying leading technology to improve ship efficiency and to solve the core issues of maritime emissions.  Beyond reducing our emissions by more than 20% with its kite, AIRSEAS is a top end digital partner looking at integrating their solution with our “Kawasaki Integrated Maritime Solutions” which is integrated vessel operation and performance management system in order to smartly manage our vessel operation. Seawing reduces the environmental footprint of capsize vessel by 5,200 tons of CO2 per year depending on the vessel voyage route, that is contributing to achieving our goal to reduce CO2 emissions by half, targeting year 2050, in “K”LINE Environmental Vision 2050.” says Mr Asano, SMEO of “K”LINE. The Japanese “K”LINE, known for its excellence in safety and service quality, transports goods worldwide through its fleet of 520 vessels.  “We are proud that K-LINE as a leading ship owner confirms its trust towards AIRSEAS following its two years of intense assessment of our solution. With this deal, AIRSEAS will kick-start its industrial scale up. Seawing’s innovative technology will become a leading energy efficient solution for the shipping industry, thus contributing to cleaner sky and oceans.” says Mr Bernatets, CEO of AIRSEAS.

About “K”LINE:

“K”LINE (Kawasaki Kisen Kaisha, LTD.) just celebrated its 100th anniversary and operates 520 vessels worldwide in dry bulk, energy resource transport and car carrying. Its corporate principal is to contribute to society so that people live well and prosperously. Innovating to preserve the environment is therefore one top priority in line with its corporate values.

About AIRSEAS:

AIRSEAS combines aeronautical know-how in modelling and control laws with maritime technology to bring a game changing energy efficiency solution to shipping. As a spin-off of AIRBUS, it aims at equipping 15% of the world’s fleet by 2030. Its partners and supports are LMG Marin, MaxSea, ENSM, Nervures, ADEME, PIA, Région Occitanie and Région Pays de la Loire.

About Seawing:

Seawing combines aeronautical know-how with maritime technology to create a breakthrough in the maritime transportation sector. A simple switch launches or recovers the kite which unfolds, operates and refolds autonomously. The system collects and analyses meteorological and oceanic data in real-time. Seawing adapts to this information in order to optimize its performance as well as to ensure maximum safety.

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hér er gömul grein um flugdreka á leið upp og niður sem framleiða rafmagn léttilega:)

 

 

A traditional childhood pastime could provide a breakthrough in renewable energy, after successful experiments in flying a giant kite at one of Europe's top research centres.

 

Scientists from Delft University of Technology in the Netherlands harnessed energy from the wind by flying a 10-sq metre kite tethered to a generator, producing 10 kilowatts of power.

The experiment generated enough electricity to power 10 family homes, and the researchers have plans to test a 50kW version of their invention, called Laddermill, eventually building up to a proposed version with multiple kites that they claim could generate 100 megawatts, enough for 100,000 homes.

Wubbo Ockels, a professor of sustainable engineering and former astronaut who leads the Laddermill project, believes kites are a cheap way to harvest the enormous energy in the wind at a kilometre or more above the ground, where winds carry hundreds of times more energy than on the ground. 'We need to use all the energy supplies that are offered to us by nature, we need diversity and kites are ... intriguing and fascinating,' he said

 

Ockels is not alone. Google.org, the philanthropic arm of the Californian web-search company, invested $10m (about £5m) last year in a US kite company called Makani, one of the first awards as part of the organisation's Renewable Energy Cheaper than Coal programme.

The aim of both teams is to tap into high-altitude wind, which is an energy source that is more abundant and reliable than the ground-level wind on which normal turbines depend.

Ken Caldeira, a climate scientist at Stanford University's Carnegie Institution, has estimated that the total energy contained in wind is 100 times the amount needed by everyone on the planet. But most of this energy is at high altitude.

The blades of modern commercial windmills sit around 80 metres from the ground, where the wind speed is almost five metres per second. At 800 metres, however, wind speed rises to seven metres per second, potentially generating considerably more energy.

It would be virtually impossible to build a standard turbine to take advantage of the wind at 800 metres, but kites could easily get to these heights. Furthermore, thanks to the high-speed jet stream, countries such as the UK, the Netherlands, Ireland and Denmark are particularly suited to flying kites.

'Pretty much anywhere in the UK you could run a kite plant economically, but you couldn't run a wind turbine economically,' said Allister Furey of the University of Sussex, who develops computer control mechanisms to maximise the power generated from kites.

A kite generates power by pulling on a string attached to generators on the ground. When it has reached its maximum height, it is reeled back down to repeat the process.

Using computer models, Furey has worked out that flying kites in a figure of eight pattern means the air flowing over them travels even faster than the ambient wind speed. When a kite needs to be reeled in, it is angled so that it falls out of the sky like a glider, without the need for much power. Ockels's system uses these flying patterns to maximise the power the kites can generate. He is also looking at extending his basic prototype to use multiple kites that yo-yo: when one goes up, another goes down. Ockels estimates that kites could generate power at less than 4p per kilowatt-hour, which is comparable to coal power and less than half the cost of electricity from wind turbines.

'The first systems will be community scale that could power a large farm and sell some electricity back to the grid,' said Furey. 'Once the technical issues have been sorted out, you can scale them up to the level of a coal-fired plant. All you have to do is multiply the number of kites and you can have a farm as big as you want.'

There are many ideas for commercial-scale demonstration projects. An Italian company, Kitegen, has come up with a theoretical design for a system that could generate a gigawatt, as much power as a standard coal-fired power station. Its idea involves flying 12 sets of lines with four 500-sq metre kites on each.

A spokesman for the British Wind Energy Association welcomed the idea of devices that could harness the power of jet streams and higher-altitude winds, saying: 'There is a vast potential that could be harnessed with the technology now available.'

Nick Rau, energy campaigner at Friends of the Earth, agreed. 'We could easily supply our electricity demand from offshore, even with other demands on sea such as shipping, fishing and defence radar. These new [kite] technologies allow us to go further offshore and avoid other problems. We have an abundance of renewable energy and there are a lot of visionary technologies coming along so that, in future, the sky's the limit.'

How quickly technology will make it to market depends on how much investors are willing to put in. Ockels said that commercial systems could be operational within five years if the money was made available; otherwise the technology could languish in the lab for a decade or more.

'The Google prize is nothing compared to taxpayer money flowing into energy research. If you take sustainable energy seriously, the money flow to sustainable energy should also be serious.'  guardian

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1 hour ago, Herkúles said:

How quickly technology will make it to market depends on how much investors are willing to put in. Ockels said that commercial systems could be operational within five years if the money was made available; otherwise the technology could languish in the lab for a decade or more.

'The Google prize is nothing compared to taxpayer money flowing into energy research. If you take sustainable energy seriously, the money flow to sustainable energy should also be serious.

Er þetta ekki að láta skattborgarann blæða fyrir eitthvað rugl, ef að þetta væri raunverulegt, hefðu skipafyrirtækin auðvitað þróað þessa tækni sjálf.

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1 tíma síðan, Ingimundur Kjarval said:

Er þetta ekki að láta skattborgarann blæða fyrir eitthvað rugl, ef að þetta væri raunverulegt, hefðu skipafyrirtækin auðvitað þróað þessa tækni sjálf.

Þeir sem þekkja svolítið til viðskipta vita af þörf "nýsköpunarfyrirtækja" fyrir fjármagn.
Sum þessara félaga senda reglulega frá sér tilkynningar um að "stórkostlegar framfarir hafi orðið á rannsóknum, og bylting er bara spurning um smá tíma, og pening"

Menn hafa logið um framtíðina eins lengi og hægt hefur verið að græða á því.
EF hér er um byltingu að ræða, af hverju eru bara til teikningar af flutningaskipum með segl, en ekki flutningaskip með seglum?

Ég skal reyna að útskýra það fyrir fólki sem hefur meira af trúgirni en skynsemi.
Segl þurfa möstur, og risastór segl sem þarf til að færa stórt flutningaskip, þarf risastór möstur, möstur sem bæði eru nógu há og breið til að segl komist fyrir, og nógu sterk til að þola þá gríðarlegu krafta sem slík segl taka á sig.
Það sem gerist þega búið er að koma fyrir risastórum seglum og risastórum möstrum, þá er ekkert pláss lengur á dekki fyrir gáma.
Og það er annað sem gerist, þyngdarpunktur skipanna hækkar og þau velta meira.
Til þess að koma fleiri gámum fyrir, þarf skrokkurinn því að verða hærra en ella, og með segl og möstur þar fyrir ofan, væri það krafaverk ef þau hreinlega færu ekki á hliðina um leið og þau komast í sjó.

Til þess að bæta upp háan þyngdarpunt, þarf því að setja ballestar í kjölinn, og í svona skipi yrðu það engir smá klumpar, sem aftur auka þyngdina og krefjast því enn stærri segla.

Eitt er öruggt í heimi hér, og það er að enginn endir er á trúgjörnu fólki.
 

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..það sem rætt um um hér fyrir ofan eru svo að segja flugdrekar sem draga skip áfram,þar þarf engin há möstur osfrv...

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..skipafyrirtæki:

"Breakthrough in green shipping: the Japanese KAWASAKI KISEN KAISHA, LTD. (“K” LINE) signs for up to 50 automated kites from AIRSEAS

Oslo, Norway: After 2 years of close technical and business cooperation, KAWASAKI KISEN KAISHA, LTD. (“K” LINE) announces a 20-year agreement with AIRSEAS to install and service one ship with Seawing, an automated kite based on parafoil technology used to tow commercial ship and reduce CO2 by 20% through wind propulsion."

..20% minni mengun,20% ódýrara þegar tímar líða, með drekunum............

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Verið að sjá fyrir mér í huganum þessa flugdreka. Svo snýst vindurinn og verður logn í smátíma meðan hann er að snúast og þessi risa flugdreki dettur í sjóinn er það ekki? Kjarnorkuknúin flutningaskið leysa allan vanda, get siglt mörgum sinnum í kringum jörðina áður en að það þarf að endurgera kjarnorkuverið í þeim 

Eins og ég segi, byggja kjarnorkuknúið varðskip. 

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