Problematic classification ManufacturedCoalBasedGas

[l-emele]

Description of the issue

The class ManufacturedCoalBasedGas is currently a subclass of SolidFossilFuels. But this is somehow weird as manufactured coal based gases (as the name indicates) are gaseous in the normal state of matter. Examples of manufactured coal based gases are blast furnace gas and gasworks gas.

In some classifications manufactured coal based gases are aggregated in totals of solid fossil fuels e.g. the European Statistics Regulation and the greenhouse gas inventories. In other aggregations (e.g. German and European energy balances) those manufactured coal based gases are aggregated within (fossil) gases.

This brings me to the question whether we need not one fixed fuel hierarchy but some kind of FuelClassificationConcept similar to the sector concept we implemented for the sectors?

Ideas of solution

To be discussed.

Workflow checklist

• [ ] I discussed the issue with someone else than me before working on a solution
• [ ] I already read the latest version of the workflow for this repository
• [ ] The goal of this ontology is clear to me

I am aware that

• [ ] every entry in the ontology should have an annotation
• [ ] classes should arise from concepts rather than from words
• [ ] class or property names should follow the UpperCamelCase

[l-emele]

In the current dev, the class manufactured coal based gas is a direct subclass of portion of matter and has the property has_normal_state_of_matter value gaseous.

I proposed in this issue a FuelClassificationConcept but I think we currently do not need that.

So I think this issue can be closed. Do you agree, @stap-m and @akleinau ?

[stap-m]

I agree.