TADEAS: nevim jestli na desetinu, ale na petinu uz projekce na celkovy naklady jsou :)

A combination of cost reductions in electricity and electrolyzers, combined with increased efficiency and operating lifetime, can deliver 80% reduction in green hydrogen cost. 

IRENA sees renewable hydrogen at least cost-possible within decade - Green Car Congress
https://www.greencarcongress.com/2020/12/20201218-irena.html

SHEFIK:
The proposed system could only work by employing a battery with a minimum storage capacity of 20 kWh and a fuel cell and electrolyzer with an installed capacity of at least 4 to 7 kW. “Hydrogen storage capacity of about 170 kg to 190 kg is needed to maintain system operation during the winter months, thus, unless additional compressors are used, a relatively large area in a residential home would be required for physical storage of hydrogen,” the scientists affirmed.

idealne do sklepa kazdyho baraku, hasici approves :)

SHEFIK: uh oh
z PDF: "When compressed to 50 bar (...) the storage capacity for the 183 kg of hydrogen would need to be 45.8 m3"

TADEAS: neco takovyho?

Whirlpool Turbines Can Provide 24/7 Renewable Energy For Dozens Of Homes
http://www.youtube.com/watch?v=buF8ASmwXt4

SHEFIK: vtipny je ze i na urovni domu/domacnosti ta energeticka problematika kopiruje tu sirsi. v zasade z tohohle pohledu je problem akorat ta zima, v malym meritku je k dispozici plyn, bioplyn, vodik, drevo... a uspory, tepelny cerpadla a vhodna kombinace technologii. vitr je v podstate relevantni akorat grid-scale. jeste by davalo smysl nejaky micro-hydro, ale to jsou hodne specificky podminky.

pro PADa a TADEASe

Batteries and hydrogen to make residential off-grid PV technically feasible – pv magazine International
https://www.pv-magazine.com/...es-and-hydrogen-to-make-residential-off-grid-pv-technically-feasible/

Researchers in Finland have demonstrated the technical feasibility of an off-grid residential PV system combined with short-term battery storage and seasonal hydrogen storage. The proposed model is applicable only to northern climates, as higher levels of solar radiation in southern locations would mean a reduced need for seasonal storage. It was tested in an existing single-family house in Finland with a 21 kW rooftop array and a ground source 6 kW heat pump.

...

In their simulation, the academics used a battery bank for short-term energy storage and for controlling peak demand, and a hydrogen tank linked to a water electrolyzer and fuel cell for seasonal storage. Surplus PV electricity is used primarily for charging the battery and only when the latter is charged is it used to power the electrolyzer. Overdemand, on the other hand, is always met first by the battery itself. “Unnecessary sudden powering on and off of the fuel cell is minimized by limiting its output power based on the battery state of charge,” they also specified.

tak zrovna na novom zelande sa natacal jeden z najlepsich splatterpunk zombie hororov braindead ci bad taste, tak s tymi si tam vedia poradit

reagujem skor na to ze ako ta escape zona sa tu preberal skor ten novy zeland a nie australia, ale myslim, ze nie je take jednoduche sa tam dostat (uz teraz), ked napr. ani do tasmanie nie je jednoduche imigrovat ani ak si bohaty american :)

DZODZO: nový zéland je ještě zábavnější. Velice rychle by se mohl proměnit v gulag. Gulagy totiž neměly ploty, protože nebylo kam utéct, kolem byla jen pustina. Nový zéland je ještě lepší kolem je moře. Jak dlouho by asi takový nový zéland mohl odolat moderním pirátům útočícím z moře? Třeba číňanům?

Každý zombi fan ví, že pokud se svět zhroutí, největší nepřítel není prostředí (zombie a příroda), ale další lidi, to je ta nejhorší hrozba.

YMLADRIS: taky se da prijmout skutecnost, ale zaroven stale pracovat na reseni, nebo zmirneni nasledku. pekne v klidu

muze byt prinos

„Uklidněte se a přijměte skutečnost. Obrátit se dříve či později v nic je koneckonců osudem všeho živého. Otázka ted stojí takhle: můžeme být i s vyhynutím na obzoru šťastni?“ Píše Franco Bifo Berardi

Extinction, Rebellion, Happiness | Ill Will Editions
https://illwilleditions.com/extinction-rebellion-happiness/

nevim co si myslet. mladi jsem prozila v socialismu, kde jel nekonecny proud stranickych zavazku, ale nemelo to vubec zadnou validitu, jen kecy. tak nevim co ten Xi, pry je srdcem ekolog

In one of the most anticipated speeches at last weekend’s Climate Ambition Summit, Chinese leader Xi Jinping announced a new set of updated national climate targets for 2030.
Carbon Brief asked analyst Lauri Myllyvirta to take a close look at the details and he found that the pledge to “cut CO2 intensity of GDP by more than 65% from 2005 levels” could be the difference between China reducing, peaking or increasing its emissions this decade. If, by “more than 65%”, Xi were to mean 70%, then, as the chart above shows, it could see an overall reduction – with profound implications for keeping global warming below 2C.

Analysis: China’s new 2030 targets promise more low-carbon power than meets the eye | Carbon Brief
https://www.carbonbrief.org/...nas-new-2030-targets-promise-more-low-carbon-power-than-meets-the-eye