Ko nga pūtau photovoltaic solar ka whakaputa hiko me te kore e whakaputa i te waro hauhaa (haunga te kaha whakauru i roto i te hanga).

Ka whakaputahia e nga awhi Photovoltaic te wera o te rohe ka pa ana te ra, pera me tetahi mea. Mēnā he pōuri ake te paerangi kōmaru (kei raro te albedo ) i te ahanoa (te tuanui , te whenua rānei) e hipokina ana, ka nui ake te wera ka kuhu, ka tukuna atu i era atu.

He mea nui tenei? Kao! Ahakoa mo te panui solar tata-pango i runga i te mata ma, he iti te nui o te wera ka puta mai i tenei huarahi ka whakatauritea ki te paanga o te wa roa o te aukati i te tuku waro hauhaa i roto i te whakaputanga hiko. Ia rāpoi ngota o CO2, i roto i tona wa i roto i te kōhauhau, mahanga tata 100,000 whakarea atu te wera atu i tukuna i roto i te tauhohenga i hanga ai. Ko nga whakamahana na te tae o nga panui solar he iti ake i te hapa porohita. [ e hiahiatia ana te manatoko ]

Te tatauranga

Te wera i tukuna e te röpü

Whakaarohia he panui solar pango parakore. [1]

Assume 14% efficiency. Then for each kWh of electric energy generated, total energy that falls on the panel must be 7 kWh (100%/14% * 1 kWh = 7 kWh). Of this 7 kWh, 1kWh becomes electricity, and the remaining 6kWh are radiated as heat.

Heat avoided by the panel

Assuming the solar power is replacing US grid power, each kWh generated avoids the release of approximately 1.52 lb (690 g) of CO2.[2] During its time in the atmosphere, this amount of CO2 would have absorbed approximately 210,000 kWh of heat.[verification needed]

Net effect

The benefit in avoided heating of the atmosphere by using solar photovoltaic power (assuming US grid power or similar as the alternative) is approximately 209,994 kWh of heat (210,000-6) for every 1 kWh of electricity produced.[verification needed]

Sources

Notes

  1. Actually many solar panels are blue and somewhat reflective, possibly having a higher albedo than the roof or ground that it covers. However, this doesn't actually matter in the context of the vastly larger amount of trapped heat avoided by not releasing CO2.
  2. 6.8956 x 10-4 metric tons CO2 / kWh, from EPA eGRID2010 Version 1.1, U.S. annual non-baseload, 2007 data, does not include line losses.

See also

Page data
TypeStub
Keywordsphotovoltaics, analysis, sustainability myths, albedo
SDG Sustainable Development GoalsSDG07 Te utu utu me te kaha ma
KaituhiChris Watkins
Whakaputaina2012
RaihanaCC-BY-SA-4.0
PāngaNumber of views to this page and its redirects. Updated once a month. Views by admins and bots are not counted. Multiple views during the same session are counted as one.4,315
Nga takeAutomatically detected page issues. Click on them to find out more. They may take some minutes to disappear after you fix them.Karekau he ahua matua
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