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    TUHOKlimaticka zmena / Thank you so much for ruining my day
    YMLADRIS
    YMLADRIS --- ---
    encyklopedie od Portalu

    Dětská literatura | Jak se vyznat v klimatu | Nakladatelství Portál
    https://obchod.portal.cz/detska-literatura/jak-se-vyznat-v-klimatu/

    YMLADRIS
    YMLADRIS --- ---
    K dosažení klimatické neutrality do roku 2050 stačí investovat 1-2 procenta HDP ročně
    https://www.czechsight.cz/...aticke-neutrality-do-roku-2050-staci-investovat-1-2-procenta-hdp-rocne/

    nejsem si jista zda byl tento Jakub
    YMLADRIS
    YMLADRIS --- ---
    A 2017 study in the journal Nature Communications found that among hunter-gatherer societies, those with better storytellers are more cooperative. It’s our ability to cooperate that anthropologists say has allowed humans to survive even the harshest environmental conditions and to fend off predators that could take us out individually. In fact, our brains are wired for story, which is why most of us can retain stories far longer than we can retain a series of facts stated plainly. The stories that we tell about ourselves and our place in the world are the raw materials from which we build our existence. Or, to borrow from the storyteller Kurt Vonnegut, “we are what we pretend to be, so we must be very careful what we pretend to be.”

    o "proklimatickych" filmech

    How Movies Like Black Panther Can Help Climate Change | Time
    https://time.com/5889324/movies-climate-change/
    SHEFIK
    SHEFIK --- ---
    posledni dve, at netapetuju :)

    General Electric přestane stavět uhelné elektrárny - Ekolist.cz
    https://ekolist.cz/cz/zpravodajstvi/zpravy/general-electric-prestane-stavet-uhelne-elektrarny

    Milan Smrž: Blahosklonný tón zprávy Deloitte je vstupenkou do klimatického pekla - Ekolist.cz
    https://ekolist.cz/...lann-smrz-blahosklonny-ton-zpravy-deloitte-je-vstupenkou-do-klimatickeho-pekla
    SHEFIK
    SHEFIK --- ---
    tady nejaka pricmrndavka od airbusu ke klimatu - 2035 vodikovy letadla :)

    https://www.foxbusiness.com/industrials/airbus-unveils-concepts-for-hydrogen-powered-plane
    SHEFIK
    SHEFIK --- ---
    climate clock v new yorku :)

    Climate Clock Goes Live In New York City
    https://cleantechnica.com/2020/09/21/climate-clock-goes-live-in-new-york-city/
    SHEFIK
    SHEFIK --- ---
    PAD: a nebo Thermal storage :) tohle vypada taky slibne...

    New Energy Storage System Repurposes Old Coal Power Plants
    https://cleantechnica.com/...2/new-energy-storage-system-from-building-blocks-for-coal-power-plants/
    SHEFIK
    SHEFIK --- ---
    Nuclear strikes back. And renewable.

    ANEEL: Thorium-Based Reactor Fuel Could Support A New Wave Of Nuclear Power
    https://www.forbes.com/sites/jamesconca/2020/09/22/aneel-a-game-changing-nuclear-fuel/amp/

    With a proprietary combination of thorium (Th) and uranium (U), particularly “High Assay Low Enriched Uranium” (HALEU), ANEEL fuel can address several issues that have plagued nuclear power – cost, proliferation and waste. Plus, this fuel, being made-in-America, positions it as a prime candidate for export to emerging nuclear markets.

    ...

    But in developing nations, the need is urgent. Most do not have the infrastructure to install natural gas, wind or solar. Additionally, many do not have sufficient topography and river flow for hydro. So it’s either coal or nuclear. If you care at all about the environment, then it better be nuclear.

    ...

    The ANEEL fuel has a very high fuel burn-up rate of about 55,000 MWd/T (megawatt-day per ton of fuel) as compared to natural uranium fuel used in currently operating PHWRs/CANDUs with a burn-up of around 7,000 MWd/T. This is important in a few ways

    Higher burn-up means the fuel stays in the reactor longer and gets more energy out of the same amount of fuel. Also, more neutron poisons breed in over the fuel’s use, including Pu-240,241,242 making the spent fuel prohibitively difficult to make into a weapon.

    Also, a higher fuel burn-up of ANEEL fuel will reduces the waste by over 80% and ends up with much less plutonium (Pu) because more of the Pu is burned to make energy while making the spent fuel proliferation resistant. Less spent fuel means less refueling, less cost, less fuel handling and less volume to dispose.

    ...

    In an existing CANDU/PHWR using natural uranium, each fuel bundle weighs roughly 15 kg. After the first 150 days of operation, an average of eight such bundles would need to be replaced daily for the rest of the reactor’s operating life of 60 years.

    ...

    There is well over twice as much Th on earth than U. And like U, it can be extracted from seawater, making nuclear completely renewable, as renewable as the wind. India itself has more Th than U, particularly as monazite sands, a reason they have been pursuing Th in nuclear reactors for decades.
    SHEFIK
    SHEFIK --- ---
    PAD: imho dva hlavni faktory jsou: clean a sustainability (potencialne nevycerpatelna)

    proti je zatim ta efektivita konverze, coz je ale otazkou technologie, ktera se bude v case vyvijet

    podle me ale je to porad jen nejaky smer, ktery se musi osvedcit. mozna nakonec vyhrajou baterky, nebo nejaky kompromis podle parametru a vhodnosti vyuziti

    tady jsem neco rozumnyho dohledal, SWOTka asi nejlip vystihne situaci:

    Hydrogen Economy - an overview | ScienceDirect Topics
    https://www.sciencedirect.com/topics/engineering/hydrogen-economy

    In the SWOT analysis, 12 subfactors, i.e., abundant resource reserves, great development potential, and benefits for environmental protection (belonging to “strengths”), high cost, lack of key technologies, and incompletion of hydrogen infrastructure (belonging to “weaknesses”), government support, high social acceptability, and deepened cooperation (belonging to “opportunities”), deficiency of investment channels, competition with other renewable resources and unconfirmed potential market (belonging to “threats”), were identified to depict the current status of hydrogen economy in China.
    LINKOS
    LINKOS --- ---
    JAZZZ: mít elektrárnu, co využívá místní sezónní organickou hmotu a část využije na energetické účely a část přemění na biouhel je jedna podle mě win-win řešení.
    PAD
    PAD --- ---
    SHEFIK: jo, to je pravda, cast penez z green new dealu jde na vodikovou ekonomiku - ale nejsem si jisty, jestli zrovna tohle je zpusob. Proc zrovna vodik a ne treba methan nebo amoniak? Nebo elektrochemicke ulozeni? Nebo neco uplne jineho, o cem ani nevime? Predstavoval bych si proste aktivizaci velke casti vedeckotechnickeho potencialu k reseni tohoto problemu obecne, ono by se neco chytlo (tak jako u Manhattanu slo hlavne o vedeckotechnickej projekt, ktery mel nekolik paralelnich projektu - i ty dve bomby nakonec byli konstrukcne dost odlisne).
    JAZZZ
    JAZZZ --- ---
    LINKOS: pokud ten popel nesypou zpátky na pole, tak je ta elektrárna zároveň i továrna na poušť, ale to jako správce klubu o biouhlu víš líp než já :)
    SHEFIK
    SHEFIK --- ---
    PAD: nalije, jen tomu rika hydrogen misto battery storage

    daval sem sem link nedavno
    PAD
    PAD --- ---
    In-depth: The whole system costs of renewables | Carbon Brief
    https://www.carbonbrief.org/in-depth-whole-system-costs-renewables

    A more reliable way to estimate whole system costs, UKERC says, is to take a whole systems approach. This means creating a model to simulate the electricity system, then comparing versions with and without high levels of wind and solar.

    Hugo Batten, senior project leader at consultancy Aurora Energy Research, tells Carbon Brief it simply isn’t possible to get accurate system integration cost estimates without modelling the different electricity markets down to half hourly resolution.

    Still, if integration costs add somewhere in the order of £10/MWh to renewable costs, as the UKERC review authors tell Carbon Brief it is reasonable to assume, then onshore wind and solar will remain among the cheapest ways to generate power in the 2020s.
    --
    Casto nejde oddelit jednotlive vicenaklady na integraci OZE od jinych nakladu (napr. na rekonstrukci site), takze jediny fer zpusob je to proste nasimulovat. Nicmene odhady hovori o nakladech pri pokryti OZE kolem 30% ve vysi, ktera cini OZE stale velmi konkurenceschopnymi (v UK). Tohle +- souhlasi s tim, co jsem sem uz daval - dokud OZE predsatvuje spise mensi podil, ekonomicky uz davaji smysl dnes (samozrejme pouze pokud se zahrnuje cena povolenek).

    Zajimavy je scenar, ktery uvazuje zlevneni baterii - to by mohlo celou ekonomiku OZE uplne obratit a mohly by vlaste predstavovat cisty ekonomicky prinos (pro sit) tim, ze by poskytovaly stabilizaci atp. Tak si rikam, misto staveni nesmyslnych hladovych zdi kvuli krizi, proc Evropa nenalije prachy do takoveho novodobeho projektu Manhattan, ktery by mel za ukol tohle vyresit?

    TADEAS
    TADEAS --- ---
    KEB: aha
    LINKOS
    LINKOS --- ---
    JAZZZ: tak pelety máš zas něco jiného. Stepka je na drobno namleté dřevo, typicky z větví a energetických dřevin. Takové ty proutky japonských topolů co může každý rok sklízet kombajn. Pelety jsou lisovaný prach z dřevovýroby.
    Štěpkou topí soused a to je opruz, je to moc na jemno, špatně se to suší, dneska se dělají tzv. spalikovacky, kdy to je mnohem větší kus cca 4 cm dlouhý a to je jiný kafe. Pelety jsou pak dotované obecně jejich výroba. Dají se dělat i ze slámy, u nás stojí jedna elektrárna na tohle za kopcem.
    KEB
    KEB --- ---
    TADEAS: hysterické výkřiky o USA na pokraji občanské války a šílenci co to tam vede stejně jako celkový tón toho textu je IMHO kontraproduktivní. Ty co na strašení slyšeli už jaksi mobilizovat netřeba s ty co na strašení neslyší, tohle akorát utvrdí v tom, že jejich postoj je správný.
    JAZZZ
    JAZZZ --- ---
    LINKOS: Přesně. Peletky jsou fajn pro rodinný domy a ne pro elektrárny. To zas vymyslel nějakej pseudozelenej byznysmen.
    UK now burning 33% of world's wood pellet imports | Carbon Brief
    https://www.carbonbrief.org/uk-now-burning-33-of-worlds-wood-pellet-imports
    TADEAS
    TADEAS --- ---
    KEB: proc?
    LINKOS
    LINKOS --- ---
    Mě docela děsí, když vidím jak někteří investoři chtějí jen z uhlí přejít na štěpku. Jsem fakt zvědav kde ji budem brát, až nebude kůrovec.
    Kliknutím sem můžete změnit nastavení reklam