Calculate environmental impact of dootrips

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Typ: 
Feature request
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We are calculating the environmental impact by the re-used computers, although not by the CO2 saved by dootrips. But the number of dootrips is increasing and now we have a base to prove the impact.

How about taking the impact by dootrips into account? I was not able to find the CO2 being produced by transportation by flight of one kg freight and km. Maybe you are luckier.

But we could add all dootrips (most of them are flight, only some are by car or container) similar as:

[No. of dootrips] * [weight of dootronics transported] * [total km flight distance] * [CO2 per km flight]
(you are the experts in formulas :) )

This we could show in presentation, homepage etc.

Of cause Labdoo is not 100% CO2-free, as the plane would weight 3 kg per laptop less and would produce a little less CO2. But in math we say in German the impact is "vernachlässigbar klein" (negligibly small).

http://timeforchange.org/co2-emissions-shipping-goods
http://www.co2list.org/files/carbon.htm#RANGE!A175
CO2 emission by plane (0.5 kg CO2 per km per ton) = 0.0005 kg CO2 per km per kg

Kommentare

Bild des Benutzers jordi
Gespeichert von jordi am Mo, 03/27/2017 - 00:44

I have implemented the calculation of the CO2 savings for each dootrip. You will find two new fields in each dootrip page: "Travel distance" and "CO2 emissions savings". See sample screenshot.

Example: https://www.labdoo.org/content/dootrip-000000369-hannover-germany-mbweni...

The distance is calculated using the Vincenty formula.

I plan to also include a calculation of the total CO2 savings from dootrips and show it both on the global macro stats and on each user's global contributions page. This work will come next.

Commit for this code: https://github.com/Labdoo/Labdoo/commit/34b74296898b3b134610e73a8ef2e289...

Bild des Benutzers Rhein-Ruhr-Hub
Gespeichert von Rhein-Ruhr-Hub am Mo, 04/03/2017 - 11:42

Hi Jordi,
great. How about show these figures as ttal of all dootrips? Below the world map? And updated, when filtering the dootrips?
Just an idea, Ralf.

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Gespeichert von Rhein-Ruhr-Hub am Mo, 04/03/2017 - 11:47

Hi,
just created this dootrip https://www.labdoo.org/de/content/dootrip-000000379-l%C3%B6rrach-germany..., but even no laptop is assigned, it shows 8.5 kg CO2 saved? Should be zero, as no laptop assigned?
Gesamtgewicht IT-Spende (geschätzt): No dootronics linked to this dootrip yet
Travel distance: 6795 Kms
CO2 emissions savings: 8.5 Kgms of CO2 emissions saved

Bild des Benutzers jordi
Gespeichert von jordi am Di, 04/04/2017 - 06:37

Hi Ralf, the reason is non-zero is because we still want to show an estimate of the potential savings induced by a dootrip to get an idea of its "potential positive impact". If there are no laptops assigned, the formula makes an estimate of the potential CO2 savings induced from this dootrip by assuming 1 laptop. This is just an indication. Once laptops are assigned, then the actual/real number of CO2 savings (multiplied by the number of laptops) is computed.

The idea here is that when somebody registers a dootrip, even if there is still no laptop assigned, we can show the potential savings as a base measure. This provides further information about the importance of using dootrips for transportation to help reduce CO2 emissions.

I have slightly modified the message to explain this, please check and let me know your thoughts:

https://www.labdoo.org/de/content/dootrip-000000379-l%C3%B6rrach-germany...

Bild des Benutzers jordi
Gespeichert von jordi am Fr, 04/14/2017 - 11:34

This ticket request is now implemented. There is an outstanding discussion we are having with Ralf about what's the right number to use in terms of CO2 savings per dootronic, which is just a matter of scaling up or down by a constant all the numbers. We are going to resolve this in the next days.

Commits:
https://github.com/Labdoo/Labdoo/commit/34b74296898b3b134610e73a8ef2e289...
https://github.com/Labdoo/Labdoo/commit/db81fe4c6d8a8a9a725a7b40d731f574...