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Summary

Intro

Jak muzu pomoct v boji s globalnim oteplovanim?

- oteplovani zpusobuji emise CO2 (a dalsich plynu)
- v prumeru, nejvetsi emise na osobu jsou zpusobeny [...]
	- bydlenim (40 %)
	- osobni dopravou (30 %)
	- jidlem (10%)
	- ...
- muzu snizit sve emise (viz nize)
- muzu pomoct ostatnim
	- povidat si
	- tlacit na zakonodarce
	- tlacit na spolecnosti
- 1st order (prime efekty, konkretni body)
	- body nize

- 2nd order (neprime efekty)
	- elektro-auto
	- povidat si s lidmi
	- tlak na zakonodarce
	- jit prikladem
	- awareness raising

- obecne principy
	- zit co nejsetrneji, nejskromneji 
	- pouzivat to co mam, nekupovat dalsi veci
	- mit malo kvalitnich veci, ne tocit hodne nekvalitnich
	- minimalizovat spotrebu

  1. domacnost - vytapeni & zatepleni & energie

    • zateplit
      • prumerny barak sezere 10MWh / rok [..]
      • prumerna domacnost Y /rok [cesky statisticky urad]
      • zatepleni v prumeru o Z % [..]
        • je uspora .. CZK && .. tun CO2 / letu praha <> ny
    • ne kotel na uhli, ale plyn / cerpadlo
      • vygenerovani potrebneho tepla ^ vygeneruje / stoji
        • .. CZK && .. tun CO2 / letu praha <> ny
          • kotel na uhli
          • plynovy kotel
          • tepelne cerpadlo
    • spotrebujes-li, tak poridit si solar, mikro-vetrnou el.
      • jizni strecha, 45% x kWh za rok pri ucinnosti Y [..]
      • instalace K kW stoji Z CZK, pri spotrebe O, navratnost X let
    • 1stupen ~ 6%
      • snizeni o 1 stupen usetri X CZK, Y tun CO2

  2. doprava

    • faktor je vzdalenost
      • 1 km letadlem ~= 2 km autem sam ~= 6 km autem ve 3 ~= 6 km vlakem
      • 10000 km letadlem ...
    • nalitat co nejmin
      • X g / km na osobu, let praha <> ny == Y tun CO2
    • naplnit auto co nejvic lidma
    • najezdit co nejmin

  3. jidlo

    • co nejmin hovezi
    • co nejvic vegan

  4. male faktory / neuskodi

    • obleceni - e.g. second hand, malo novych veci
    • odpady

  5. negativni faktory (aktivne skodi / misconception)

    • latkove tasky

Doprava zbozi

  • grams per ton and km

Air plane (air cargo), average Cargo B747 500 g Modern lorry or truck 60 to 150 g Modern train 30 to 100 g Modern ship (sea freight) 10 to 40 g Airship (Zeppelin, Cargolifter ) as planned 55 g

  • 1 kg of cargo, by ship, prg <> ny == 12000 km In [3]: 25 / 1000 * 12000 / 1000 Out[3]: 0.3 kg co2 ~ 2km ujetych autem

  • to samy letadlem

    • 0.3 * 20 ~ 6kg ~ 50km ujetych autem

  • 20 g balicek z aliexpresu letecky ~ 1 km ujety autem

  • 50 g -> 2.5 km autem

Zbozi

https://carboncatalogue.coclear.co/?sector=Computer%2C%20IT%20%26%20telecom&company=all&year=2015&sort=sector

  • mobil 40 kg
  • pocitac 400 kg

Odpady

[1] https://timeforchange.org/plastic-bags-and-plastic-bottles-CO2-emissions

1kg plastu

  • vyroba ~ 3 kg CO2
  • spaleni ~ 3 kg CO2

globalne: 35 kg plastu na osobu / rok

emise = 35 * 6 = 210 emise/den = 210 / 365 = 0.57

Obleceni

[1] triko - https://www.systain.com/wp-content/uploads/2015/09/Systain_Studie_Carbon_Footprint_English.pdf [2] globalne 8% impact - https://www.cbsnews.com/news/earth-day-2019-fashion-industrys-carbon-impact-is-bigger-than-airline-industrys/ [3] https://www.smithsonianmag.com/innovation/whats-environmental-footprint-t-shirt-180962885/

[2] jeans - 32kg CO2 [1] tricko - 11kg CO2

1kg textil - 50 kg CO2

Tasky

[1] https://ourworldindata.org/faq-on-plastics

Doprava

[1] kolo - https://slate.com/technology/2011/08/how-soon-does-a-bike-pay-back-its-initial-carbon-footprint.html [2] auto - https://www.lowcvp.org.uk/assets/workingdocuments/MC-P-11-15a%20Lifecycle%20emissions%20report.pdf [3] auto srovnani, life-cycle emise - https://www.europarl.europa.eu/news/en/headlines/society/20190313STO31218/co2-emissions-from-cars-facts-and-figures-infographics [4] srovnani - https://www.eea.europa.eu/media/infographics/co2-emissions-from-passenger-transport/view

  • vyroba kola sezere 250 kg CO2 ~ = 2500 km ujetych autem (dalsi naklady co setri vuci autu: prachovy castice, silnice, lead by example & dalsi 2nd order effects)

  • vyroba auta Standard gasoline vehicle Hybrid vehicle Plug-in hybrid vehicle Battery electric vehicle

    Estimated lifecycle emissions (tonnes CO2e) 24 21 19 19

    Proportion of emissions in production 23% 31% 35% 46%

    Estimated emissions in production (tonnes CO2e) 5.6 6.5 6.7 8.8

  • tzn novy auto je ekvivalent In [2]: 5.6 * 1000 / 0.13 Out[2]: 43076.92307692308

    • ujeti 40 000 km == 120 km denne za 1 rok

  • rozdil mezi elektrickym autem a normalnim In [4]: (8.8 - 5.6 ) / 0.13 * 1000 Out[4]: 24615.384615384624

    • musis ujet 25000 km elektrickym (s elektrinou z 100% OZE) abys byl na nule

  • v soucasnym elektrickym mixu v prumeru evropy uz jsou elektricky auta lepsi

    • v cechach - nejspis taky (TODO)
    • v polsku likely ne

Jidlo

[1] voda - https://waterfootprint.org/en/water-footprint/product-water-footprint/water-footprint-crop-and-animal-products/ [2] diets & Co2 - https://link.springer.com/article/10.1007%2Fs10584-014-1169-1 [3] meat - https://www.foeeurope.org/sites/default/files/publications/foee_hbf_meatatlas_jan2014.pdf [4] beef - https://www.pnas.org/content/early/2014/07/17/1402183111 [5] infografika bb - https://www.bbc.com/news/science-environment-46459714

[6] nemecko - https://www.sciencedirect.com/science/article/pii/S0959652617309666 [7] svedi - https://www.mdpi.com/2071-1050/9/12/2227/htm

  • vege > kure,ryba > veprovy >> hovezi

    • beef - hodne CH4, hodne vody, hodne pudy, maly conversion factor

  • maximalizovat rostlinou stravu, bilkoviny z e.g. fazoli, soji

  • radove Co2 / den

    • meat - rich, medium, low = 7.2, 5.6, 4.6
    • ryba - 3.9
    • vege - 3.8
    • vegan - 2.9

  • to je 5 * 365 == 1825 kg ~ 70 % letu - praha <> ny

    zmena: high-meat -> vege & fish (high_meat - fish) * 365 / 1000 ~ uspora 40 % letu praha <> ny (7 - 4)

  • cmp clanku (kg / rok, kg / den

Domacnosti

[1] http://www.ekoblog.cz/?q=node/284 [2] https://vytapeni.tzb-info.cz/provoz-a-udrzba-vytapeni/17112-emise-co2-a-jejich-dopad-na-hodnoceni-zdroju-v-budovach [3] https://www.czso.cz/csu/czso/spotreba-paliv-a-energii-v-domacnostech [4] https://zpravy.aktualne.cz/ekonomika/nova-cisla-jak-cesi-vyuzivaji-energii-spotreba-klesla-o-tret/r~a9ed4fc4f9d111e6984a002590604f2e/

  • maly byt, hodne lidi (cr pod prumerem EU v metrazi) [3]

  • prumerna spotreba domacnosti, zdroj [3] In [2]: tj_dom = 196585
    In [3]: tj_dom / 4304173
    Out[3]: 0.04567311769299236

    In [4]: tj_dom / 4304173 * 1000
    Out[4]: 45.673117692992356

    In [5]: gj_dom_avg = tj_dom / 4304173 * 1000

    In [6]: gj_dom_avg
    Out[6]: 45.673117692992356

    In [7]: gj_dom_avg * 0.28
    Out[7]: 12.78847295403786

  • chudy topej malo, nemaj tak zatepleno,

Tepelné čerpadlo

Faktor (ucinnost oproti elektrickemu kotli) je F=2.5 - 4.

Emise CO2 zalezi na zdroji elektriny, pri soucasnem mixu (1.1 kg / kWh - TODO - je mi to podezrele). Vychazi to pak [1] 2 krat hure nez zemni plyn (co se tyce CO2), lip nez uhli, a F krat lip nez elektrika.

Samozrejme to zalezi na zdroji elektriny; da se ocekavat, ze se bude zlepsovat mix.

Samozrejme, kombinace se solarnim panelem na strese je jsane lepsi.

Dum o spotrebe S = 10 MWH / rok produkuje:

  • elektrokotel: S tun

  • TC: S / F

  • plyn: S * 0.2 / 0.95

  • to je neco jako

  • 5-10 tun CO2

6568 = praha > ny LETADLO = zere ~ 200g/km

  • praha <> ny == 6568 * 2 * 200 / 1000 =~= 2.5 tun CO2

  • ~ 4 zpatecnich letu Praha <> NY = X tun * 1000 / LETADLO / 6578 / 2

Zatepleni

  • zatepleni fasady (desitky procent spotreby)
  • zatepleni fasady, strechy
  • termostaticke ventily
  • utesnena okna, dvere
  • vymena oken

https://www.usetreno.cz/tipy-na-zatepleni-domu/ https://forum.tzb-info.cz/124596-prumerna-hodnota-uspory-po-zatepleni-domu