Solar Calculations: Difference between revisions

Revision as of 17:33, 5 April 2022

1kW pv system - 1400 kWhr
- 6 hr/day average - not! 3-4.5 kwhr/day [1]
Fuel is about 35 kWhr/gal [2]. Let's say it's used for generating electricity - about 33% efficient - [3].
To get electricity - 11 kWhr/gal equivalent. Gal is about 3 kg
This gets us to 127 gallons of fuel displaced - 42 gal. Ie - each kW installed gets rid of 3 barrels of oil!
Let's do PV roof - 21 barrels of oil displaced!

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 *1kW pv system - 1400 kWhr
 **6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango/]
-*Fuel is about 35 kWhr/gal [https://en.wikipedia.org/wiki/Gasoline_gallon_equivalent]
+*Fuel is about 35 kWhr/gal [https://en.wikipedia.org/wiki/Gasoline_gallon_equivalent]. Let's say it's used for generating electricity - about 33% efficient - [https://www.google.com/search?q=how+efficient+is+a+typical+coal+power+plant&sxsrf=APq-WBt-F20VFZEkLh8Bo4p3-1eSQWhxaA%3A1649179594699&ei=yntMYsmTKsC4qtsPurGSyA0&ved=0ahUKEwjJoKbfuP32AhVAnGoFHbqYBNkQ4dUDCA4&uact=5&oq=how+efficient+is+a+typical+coal+power+plant&gs_lcp=Cgdnd3Mtd2l6EAMyCAghEBYQHRAeMggIIRAWEB0QHjIICCEQFhAdEB4yCAghEBYQHRAeMggIIRAWEB0QHjoHCAAQRxCwAzoFCAAQkQI6EQguEIAEELEDEIMBEMcBEKMCOgsILhCABBDHARCjAjoLCAAQgAQQsQMQgwE6DgguEIAEELEDEMcBEKMCOggIABCABBCxAzoECAAQQzoQCC4QsQMQgwEQxwEQowIQQzoLCC4QgAQQxwEQrwE6BQgAEIAEOgsILhCABBCxAxDUAjoOCC4QgAQQsQMQgwEQ1AI6BAgAEAo6BwgAELEDEAo6BAgAEA06BggAEBYQHjoFCAAQhgNKBAhBGABKBAhGGABQ5QRYv0NggURoBnABeACAAYIBiAGoIJIBBDM5LjiYAQCgAQHIAQjAAQE&sclient=gws-wiz].
+*To get electricity - 11 kWhr/gal equivalent. Gal is about 3 kg
+*This gets us to 127 gallons of fuel displaced - 42 gal. Ie - each kW installed gets rid of 3 barrels of oil!
+*Let's do PV roof - 21 barrels of oil displaced!