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10-14-08, 03:19 PM | #1 |
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A reason to save CO2
Hi,
As several people know, I'm lucky enough to eco-drive and change things at home to generate less CO2, saving money is just the good side. I know since a long time that 1 liter of diesel generates 2.66kg of CO2 (for gasoline it's 24.4) and 1 kWh of electricity produces (in France) 60g of CO2 (to be added to 10mg of radioactive wastes...). But what I discovered this week-end is how much CO2 are absorbed by one tree : 10 kg/year and this is for younger forests, in older forests trees are growing less and so are needing less CO2 : 7kg/year With our cars, my wife and I are driving 15000 kms each at 5l/100. We are burning 1500 liters of diesel by years and so we are generating 4 tons of CO2 by year. To absorb such a quantity of CO2 we need 400 trees, ie 0.5 hectare Of course we do not own so many trees... only half a dozen For the electricity we are consuming 12000 kWh/year, so it's 720 kg of CO2 which corresponds to 72 trees which is roughly 0.1 hectare. I grew up in the Foret des Landes, one of the biggest forest in Europe : 1 million hectare. We are 60 millions in France and there isn't 30 millions hectare of forest in France. Suddenly any thing I'm doing wasting CO2 is making me a little bit more guilty Denis.
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Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
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02-07-09, 03:10 AM | #2 |
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From Kyoto protocol, the CO2 emissions must be divided by 4 in 2020 compared to 1990. The houses were consuming 43% of total energy with 400 kWh/mē/year, grey energy included. In 2020 houses should consume 100 kWh/mē/year, included 50 for heating, hot water and AC.
(Edit) The accounted energy is the primary one, not the consumed one. For electricity, the French coefficient is 2.58 For other energies it's 1 Here are the data for my house :
The final ratio for my house is 90+5+19-25 = 89 kWh/mē/year included 36 kWh/mē/year for heating. These are -11% and -28% of ratio required for the 2020 Kyoto goal (Edit) The final ratio for primary energy is 232+5+19-25 = 231 kWh/mē/year included 93 kWh/mē/year for heating. These are +131% and +86% of ratio required for the 2020 Kyoto goal Denis.
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Last edited by groar; 02-27-09 at 04:31 PM.. Reason: Updated the kWh used : clarified the confusion between consumed vs primary energies |
02-07-09, 07:29 AM | #3 |
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Alright, that was a bit hard to follow, but I think I got a good handle on it. What do you plan to do next to reduce your energy consumption?
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02-14-09, 04:51 PM | #4 | ||
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Quote:
Quote:
Denis.
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Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
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