02-14-09, 04:50 PM | #1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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groar's co2 emission thread
I have done a CO2 emission accounting for my family, or at least I tried...
Here are my emissions (based upon French figures) :
The total is 6944.07 kg/year of CO2. As Earth can absorb 1.8 ton/year of CO2 by human and we are a family of 3, we are generating 1544 kg/year too much. Nearly what we are saving by eco-driving and electricity saving (1696 kg/year). This total is certainly not complete, but we are probably far from 6.2 tons/year/people as a French. The biggest saving is eco-driving and my wife and I are still improving... The grey energy is the biggest guesstimate : I consider 20% of what we buy (food, appliances, cars...) is energy cost, then change this cost to CO2 by considering French electricity. For the cars I considered 1/10 of buying price. For the house I considered 1/8 of CO2 emission by house consumption. Some ways to improve :
I ordered the assembly to connect the electricity meter to a computer. I'll use it to trace the consumption in near real time and use my measures with the wattmeter to identify the consumptions and try to optimize. Denis.
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Last edited by groar; 02-15-09 at 04:13 PM.. Reason: Completed Grey Energy table and updated totals... |
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02-14-09, 06:21 PM | #2 |
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Wow, thats an impressive amount of work groar. I look forward to seeing what comes of this monitoring device. I've been looking into the different systems available. What one did you go with?
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02-15-09, 03:38 AM | #3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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my measures with the wattmeter
Total Continuous : 3389.48kWh/year / 386.66W Total Irregular : 651.50kWh/year / 74.32W When looking at the meter, the minimal is 420-440W so 40W are consumed in continuous somewhere... Denis.
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Last edited by groar; 02-15-09 at 08:13 AM.. Reason: Changed "Off" by "Standby" |
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02-15-09, 04:02 AM | #4 | |
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Quote:
Teleinfo - 1. Présentation - Aperçu Teleinfo - 1. Présentation - Screenshot Hint : HC=Off Peak Hours / HP=Peak Hours It is a hand made one. It's a improved version of the electronic schema available here : Hardware:CompteurEdf - MacodaWiki !!! I don't know if it works on other meters than EDF ones (French Electricity company). These meters has teleinformation plugs called I1/I2. Denis.
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02-15-09, 04:24 PM | #5 |
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Updated first post to complete the table of Grey Energy with cars, house and appliances. It hits the result by 20% (1160kg/year)
Grey Energy is not only the more difficult to understand, it's also the more difficult to evaluate and optimize... Denis.
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02-23-09, 03:31 PM | #6 | ||||||||||||||||||||||
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In France the owner of a house have to show an energy audit when he wants to let it or to sell it. The result is a note as the one presented on appliances and cars. It's based upon the kWh consumed and the CO2 emitted for heating and cooling the house. Here are the thresholds :
Pictures from Guide pratique DPE ADEME, pour tout savoir sur le diagnostic de performance énergétique (FR) From another thread, here is the result of my Kyoto protocol calculation : Quote:
(Edit) This is 36 kWh/m²/year of consumed energy. The classification is based upon primary energy. In France, the consumption of 1 kWh of electricity needs the production of 2.58 kWh (1) !!! The last classification scheme takes into account the electricity locally produced, ie my PV panels : 3 MWh/year = 24 kWh/m²/year. The total primary energy is : 36*2.58-24 = 69 kWh/m²/year which is rated B From a previous message in this thread, here is an extract of my CO2 emission accounting : Quote:
(Edit) The last classification scheme takes into account the electricity locally produced, ie my PV panels : (90+429 - 270)/125 = 2.0 kg/m²/year which is rated A Of course these calculations haven't been done by a professional, but the French average is class E with 240 kWh/m²/year Nevertheless, things can always be improved :
(Edit) The last classification scheme taking into account the electricity locally produced, the CO2 balance would be 2.0 - 2.7 = -0.7, ie negative (Edit) For the energy classification, the saving would be (1+2)*1000*2.58/125 = 61 kWh/m²/year, ie a result of 69-61 = 8 kWh/m²/year (Edit) [1] this coefficient takes into account the lost in transport (some French regions have very few plant), but also what is produced and not consumed (a nuclear reactor is on or off, and its production level can't be set). In other countries the coefficient is lower For other energies, the coefficient is 1 in France. Denis.
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Last edited by groar; 02-27-09 at 03:48 PM.. Reason: Updated the kWh class : clarified the confusion between consumed vs primary energies |
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02-23-09, 04:12 PM | #7 | |
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Congrats on ranking A too! |
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02-27-09, 04:09 PM | #8 |
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After several other readings, I found a small paragraph stating that the energy classification is based upon the primary energy and not upon the consumed energy. The last classification takes into account the locally produced electricity, ie my PV panels. I updated the first post to correct all the calculations and finally the energy classification isn't A but B, which is far better than French average which is D
To achieve the A label for energy classification and so the Kyoto objectives, we have to save 1 MWh/year (consumed) on heating, water heating and cooling, ie the solar water heater would be sufficient (if I didn't made any mistake ). We have a few todo about the entry doors isolation. The current doors are very thin. We are thinking about changing them by thick wood and changing the isolation joints. We are also going to change the heating programmer to have a digital 7 days one (with temporary exception) and not a mechanical 24 hours one. With these few points we'll not save a lot each year, but they will be a first step (Edit) also updated my Kyoto protocol ratio http://ecorenovator.org/forum/billia....html#post2002 Denis.
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Last edited by groar; 02-27-09 at 04:47 PM.. |
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