Category Archives: Renewable Energy

One flew over …

leoOn second thoughts, One ís …

Hier regs is die man wat vir ons sê:

  • Gebruik minder fossielbrandstof
  • Moenie vleis eet nie
  • Vlieg minder
  • Ry ‘n elektriese motor
  • Stop aardverwarming
  • Lewe spaarsamig
  • Minder kinders

Maar wat doen hy self, buiten die privaat vliegtuie, wêreldtoere, luukse seiljagte, reuse wonings, wat doen hy?

Hy en ‘n paar van sy mede celebs vlieg ‘n, wait for it, ‘n Wenkbroustilis (ja, wragtag) ‘n Wenkbroustilis vanuit Australië na Hollywood om sy wenkbroue op te maak. Sy wenkbroue.

Lees die storie hier.

Persoonlik gee ek nie ‘n hel om wát hy met sy biljoene doen nie, maar om vir ons te wil voorskryf hoe om te lewe sonder om self sy voorskrifte na te volg is huigelary van die hoogste orde.

You couldn’t make it up – no wait – it’s all about make-up.

 

 

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Filed under climate change, global warming, klimaatverandering, politiek, religion, Renewable Energy, satire, Sustainable Energy

An Irishman walked into a bar …

Nee, hierdie is nie die gewone kroeg grappie nie, maar wel ‘n tipies tradisionele Ierse optrede – oftewel die soort optrede wat ons (rassisties) met Iere vereenselwig.

fire

In navolging van die “groen” doelwit om hernubare energie aan te moedig, het die Iere besluit om die verbranding van hout vir verwarming te subsidieer. Besighede is 160 Britse Pond (BP) aangebied vir elke 100 BP wat hulle aan hout-brandstof bestee.

Die gevolg: Besighede en boere verbrand nou hout om enige plek te verwarm – selfs leë skure.

‘n Makliker manier om geld te maak is moeilik om te versin.

Lees meer hier.

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Filed under aardverwarming, climate change, global warming, humor humour, klimaatverandering, Renewable Energy, Sustainable Energy

Hot air?

hot-air

Ek lees die Hollanders gaan binne drie jaar alle treine op windkrag laat loop!

Het hulle vergeet hoekom hulle die beroemde windmeulens met elektriese toestelle vervang het: Die wind waai nie al die tyd nie.

Een van die belangrikste gebruike van die ou windmeulens was om water uit die polders na die see te pomp.

Dink jy hulle sal weer hulle skepe na seilskepe oorskakel? As hulle spoormanne seemanne was, sou hulle dan steeds dink treine kan betroubaar met wind aangedryf word?

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Filed under aardverwarming, climate change, global warming, klimaatverandering, Renewable Energy

Windfoefies.

Ek het nou al baie gelees oor windturbines wat “gratis” wind gebruik om elektrisiteit in betekenisvolle hoeveelhede te lewer. Maar as daar een bedryf is wat illustreer dat wind nie ekonomies ingespan kan word nie, dan is dit skeepvaart.

Die redes waarom dit nie ekonomies vir skeepvaart is nie, is grootliks dieselfde as waarom dit nie prakties is vir die opwekking van elektrisiteit is nie.

Een van die grootste nadele is dat wind wisselvallig is – daar moet dus steeds motore wees wat ingespan kan word as die wind te swak (of selfs te sterk!) is.

‘n Redery kan net nie bekostig om ‘n groot skip langer as nodig op die water te hou nie. Elke onnodige dag kos miljoene aan salarisse, verlore inkomste omdat minder vrag vervoer word weens minder spoed, swakker opbrengs op kapitaal investering, swakker posisie t.o.v. kompetisie en waarskynlik nog ander negatiewe gevolge.

Boonop moet so ‘n skip dan ook ‘n dubbele aandryf sisteem hê: een vir wind en ‘n konvensionele sisteem. Dink aan die onderhoud en ekstra personeel benodig as twee komplekse sisteme aan die gang gehou moet word. Moenie dink dat windkrag op ‘n groot skip sonder komplekse rekenaar stelsels bedryf kan word nie – nóg ‘n addisionele koste.

Kortom, as dit moontlik is om skeepvaart ekonomies met wind aan te vul, sou dit gedoen word!

Die enigste manier waarop dit tans vir op land ektrisiteit ingespan word, is met behulp van reuse subsidies – waarvoor die gebruiker (dis ek en jy) uiteindelik betaal.

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Filed under aardverwarming, climate change, global warming, klimaatverandering, Renewable Energy, Sustainable Energy

Renewable energy ‘simply WON’T WORK’: Top Google engineers

wind-turbine

Blowing in the Wind

Renewable energy ‘simply WON’T WORK’: Top Google engineers

Windmills, solar, tidal – all a ‘false hope’, say Stanford PhDs

By Lewis Page

Comment Two highly qualified Google engineers who have spent years studying and trying to improve renewable energy technology have stated quite bluntly that renewables will never permit the human race to cut CO2 emissions to the levels demanded by climate activists. Whatever the future holds, it is not a renewables-powered civilisation: such a thing is impossible.

Both men are Stanford PhDs, Ross Koningstein having trained in aerospace engineering and David Fork in applied physics. These aren’t guys who fiddle about with websites or data analytics or “technology” of that sort: they are real engineers who understand difficult maths and physics, and top-bracket even among that distinguished company. The duo were employed at Google on the RE<C project, which sought to enhance renewable technology to the point where it could produce energy more cheaply than coal.

RE<C was a failure, and Google closed it down after four years. Now, Koningstein and Fork have explained the conclusions they came to after a lengthy period of applying their considerable technological expertise to renewables, in an article posted at IEEE Spectrum.

The two men write:

At the start of RE<C, we had shared the attitude of many stalwart environmentalists: We felt that with steady improvements to today’s renewable energy technologies, our society could stave off catastrophic climate change. We now know that to be a false hope …

Renewable energy technologies simply won’t work; we need a fundamentally different approach.

One should note that RE<C didn’t restrict itself to conventional renewable ideas like solar PV, windfarms, tidal, hydro etc. It also looked extensively into more radical notions such as solar-thermal, geothermal, “self-assembling” wind towers and so on and so forth. There’s no get-out clause for renewables believers here.

Koningstein and Fork aren’t alone. Whenever somebody with a decent grasp of maths and physics looks into the idea of a fully renewables-powered civilised future for the human race with a reasonably open mind, they normally come to the conclusion that it simply isn’t feasible. Merely generating the relatively small proportion of our energy that we consume today in the form of electricity is already an insuperably difficult task for renewables: generating huge amounts more on top to carry out the tasks we do today using fossil-fuelled heat isn’t even vaguely plausible.

http://www.theregister.co.uk/2014/11/21/renewable_energy_simply_wont_work_google_renewables_engineers/

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Filed under aardverwarming, global warming, Renewable Energy, Sustainable Energy