Forum for ecoinvent Version 3

Here you find all boards with the latest posts of the Forum for ecoinvent v3

Written on 14.09.2017 by Avraam.Symeonidis see context

Dear Fei Zhang

Sometimes not all information is displayed in the various softwares. It is always wise to access our website and look into ecoquery about relevant documentation. Load factors for passenger cars are found in page 91 of report no. 14. The loading factor of the “transport, tractor and trailer, agricultural” dataset is found in the documentation of the dataset itself. If you take the UPR (is the dataset before linking and allocation and is available on the ecoQuery but not in softwares) of a transport transformation activity dataset, the fuel input (or electricity) is the fuel consumption relatively of course to the reference product. 

Best regards,

Avraam Symeonidis, 

Data Analyst, ecoinvent

 

 

Written on 14.09.2017 by Florentine Brunner see context

Dear Andrea,

Unfortunately, we do not have a dataset specific to natural gas burned in small-scale home appliances, only in industrial applications. I see the latter not to be a useful approximation for your purpose and would therefore recommend you to model the burning of natural gas in the stove independently.When it comes to the natural gas supply chain, you can use the dataset “market for natural gas, low pressure”, which links to the activities in the upstream supply chain, starting from gas field exploration. Please mind that the low pressure market dataset may not be available for all geographies. Hence, if you wish to study a specific geography, you may wish to increase accuracy by applying the country specific gas mix. Mixes are reflected in the “market for natural gas, high pressure” datasets and you can model subsequent regional distribution including service stations for transformation from high to medium to low pressure yourself with the respective datasets.

 

Best regards,
Florentine Brunner
Data Analyst, ecoinvent 

Written on 13.09.2017 by Zhangf see context

Dear Ecoinvent,

I am creating a list of the load factors ad fuel consumption of various datasets within ecoinvent v3.2.

However, I cannot find this information for:

- Transport, tractor and trailer, agricultural {GLO}| market for | Alloc Def, U

- Transport, freight, light commercial vehicle {GLO}| market for | Alloc Def, U

I have looked in the Documentation tab of the dataset and the RER/RoW/GLO datasets that make up this market for dataset. Also in the ecoinvent report 14 pdf.

Where can I find this data? Is it reasonable (for fuel consumption in kg/tkm) to use the entered mass of fuel (in kg) within the input/output tab of the dataset?

Can I also use the kg or kWh of fuel for transformation rail datasets that make up the market for datasets for Freight train (China), freight train (US) and freight train (Global)?

It might be useful to have a separate document where all load capacities and fuel types and consumption for each dataset are listed simply in a table.

Thanks,

Fei

 

Written on 07.09.2017 by luciavalsasina see context

Dear Ashwin,

 

The results for chlorine and sodium hydroxide production from the "chlor-alkali electrolysis, membrane cell" process are quite similar because the amount and the price of the two products, for the selected activity, do not differ by a large amount. So, when the economic allocation is applied impacts are distributed similarly between the two products.

 

If you have doubts regarding calculation of economic allocation, please feel free to contact me at valsasina@ecoinvent.org

 

Best regards, 

Lucia Valsasina, Data Analyst, ecoinvent

 

Written on 07.09.2017 by ashwinjacob see context

For the cell membrane process, there are multiple outputs like NaOH, Cl and Hydrogen.

While comapring the environmental impacts from the Chlorine gaseous(RER), chlor alkali electrolysis, membrane cell Def U and Sodium Hydroxide(RER), chlor alkali electrolysis, membrane cell Def U, the outputs are almost the same.

So how to find the impact only for one specific element like Chlorine? 

 

Written on 05.09.2017 by luciavalsasina see context

Dear Jurjen, 

 

You can find this information in different places depending on what version of ecoinvent you are using.

 

If you are using version 2 then the information should be included in the respective PDF reports which are cited in the source section of a dataset.

 

If you are looking at version 3, the prices and production volumes are reported in the datasets themselves. You can access ecoinvent online ecoQuery (if you never logged in before please read here), search for the dataset you are interested in. Once you open the dataset, the price is included in the properties section of a dataset, while you can find the production volume clinking on the reference product and/or by product.

 

If you are struggling to find this information for one or more specific datasets I will be happy to help you and direct you to the correct information.


You can also contact me directly at valsasina@ecoinvent.org. 

 

Best regards,

 

Lucia Valsasina

Data Analyst, ecoinvent

Written on 05.09.2017 by JSpekreijse see context

Dear reader,

 

For the extensive forestry records, an economic allocation has been applied (Ecoinvent (2009) Code of Practice, data v2.1, Ecoinvent report No. 2, section 5.1.14, page 20). However, I'm having difficulties tracing back what the allocation factors are. Is there a document or database entry I overlooked where I can see the estimated prices and production volumes that are used for the economic allocation?

 

Kind regards,

Jurjen Spekreijse

Written on 29.08.2017 by terezalevova see context

Dear J, 

You can publish some of the UPR data from the ecoinvent database if they are directly relevant for your own study and published conclusions. You cannot publish entire UPR inventory. You can publish the LCI and LCIA scores of ecoinvent datasets in your article only if it is directly relevant for your own study and conclusions.

As a user who owns a licence to access the database you agree to be the end user of the data. Meaning you are not allowed to resell ecoinvent data or provide them for free to third parties (in any form). 

Cite, please, always the ecoinvent datasets used correctly:

http://www.ecoinvent.org/support/faqs/first-time-users/how-do-i-cite-ecoinvent.html?most

Tereza

Written on 29.08.2017 by guillaumebourgault see context

Dear Jonas, 

You can login to the ecoQuery (click "login databases" on the top right corner of the page).  In the file section, you will find a zip file called "ecoinvent 3.3_LCIA_implementation.7z".  It contains a spreadsheet with all the CF used.  

If you have more questions, you can post here or contact me directly at bourgault@ecoinvent.org.  

Kind regards, 

Guillaume Bourgault, Project Manager, ecoinvent team

Written on 29.08.2017 by Ekoteknik see context

 Hi 

I have tried to search the website to find out how the USEtox total ecotoxicity is calculated in the Ecoinvent LCIA datasets, but I couldn't find it.

I believe that there are no CF's for terrestrial ecotoxicity in USEtox, so is this calculated in some way in Ecoinvent or is terrestrial ecotoxicity not included in the total ecotoxicity?

SimaPro only calculates freshwater ecotoxicity, could you help me understand what else is included in total ecotoxicity

Regards

Jonas Jonasson

PhD student

Written on 24.08.2017 by d012 see context

The EULA states that "Licensee is not entitled to reproduce, disseminate or publicly display any significant portions of the ecoinvent Database or the ecoinvent Datasets."

Is there any guidance on the meaning of "significant portions" in the context of a journal article?

Can I publish some of the UPR data in data tables if I cite the preliminary source?

If I am comparing my own model to alternatives already in ecoinvent (e.g., biodiesel to conventional diesel) can I publish the LCI or LCIA results? For example, if I import ecoinvent into openLCA, and I do an LCA of 1 kg low-sulfur diesel based on ecoinvent, can I publish the results?

Thanks.

Written on 22.08.2017 by Florentine Brunner see context

Dear Yves,

The activity ‘petroleum production, onshore’ exists in ecoinvent for the regional geographies of Africa, the Middle East and Russia. The production in these countries makes up the largest part of global petroleum production, however not all. Therefore, a global dataset is created with the global annual petroleum production volume, i.e. production in the three regional geographies plus production in the geographies not featured in ecoinvent. Thus, on the level of undefined unit processes (before linking and allocation) petroleum production datasets exist for the geographies RAF, RME, RU and GLO.

Once a system model is applied to these processes, a rest-of-the-world dataset is (automatically) generated to represent the petroleum producing geographies other than RAF, RME and RU. This means, the production volume of the RoW dataset (155Mt) is the difference between the global production volume and the sum of RAF, RME and RU production. The exchanges of RoW are an exact copy of the GLO dataset. (You also can find more information about the generation of RoW datasets in the FAQ section.) In the case of ‘petroleum production, onshore’, what happened is that the comments of the RAF dataset were accidentally taken over for the GLO and hence the RoW dataset. Please disregard the reference to Libya and Algeria in the GLO/RoW dataset.

Best regards,

 

Florentine

Written on 20.08.2017 by Yves Gérand see context

Dear Ecoinvent Team,

in you v3.3 database version, both the "Petroleum {RAF}| production, onshore | Alloc Rec, U" and the "Petroleum {RoW}| production, onshore | Alloc Rec, U" indicate as comment : "Crude oil production in Libya and Algeria.Only one corresponds to 120Mt/year and the other 155Mt (also in Comment section)

When analysing the impacts of these two datasets, they are different. Could you please explain how these datasets were made?

With Very Best Regards,

Yves

Written on 24.07.2017 by luciavalsasina see context

Dear Fei, 

 

DINCH is currently not included in ecoinvent. You might find some of the input chemicals that are necessary to produce DINCH, for example you can find "butadiene" in ecoinvent. Obviously the inputs depend on the production route you choose. 

 

Consult the Activity overview file for the list of all activities and products present in ecoinvent. 

 

ecoinvent version 3.4 will soon be released and will include an update in chemicals. Unfortunately I believe DINCH will nto be part of the update, but keep up to date with ecoinvent news to know more about which chemicals will be part of the new release. 

 

Thank you for the suggestion and we will include this product in the user's wish list. 

 

Best regards,
Lucia Valsasina, Data Analyst, ecoinvent