radiation receiving surface

[carstenhoyerklick]

Description of the issue

For solar radation defintions we need a receiving surface, which can have different orientations. This issue is derived from #1031

Ideas of solution

As discussed in the OEO-DEV 33 meeting, we need a solar radation receiving surface to be able to annotate solar radation on horizontal, tilted, tracking, normal.... surfaces.

A first suggestion for a defintion:

"A solar radiation receiving surface is a plane surface which is receiving solar radiation. It can be fixed with the defined orientation or can be movable to e.g. follow the path of the sun"

It could go be a subclass of .... continuant->independent continuant -> material entity -> object -> artfical object

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 a definition
• classes should arise from concepts rather than from words

[l-emele]

I don't see, why a plane surface necessarily has to be an artificial object. I think it is better described as a two-dimensional region. Or are you looking for an umbrella term to solar thermal collector and PV cell?

[carstenhoyerklick]

It it something like an umbrella termin for solar thermal collector, PV cell and measurement devices to measure solar radiation.

[l-emele]

I suggest the following definition: A solar radiation receiving surface is an artificial object that is receiving solar energy via solar radiation. I suggest the following axioms:
'solar radiation receiving surface' 'Equivalent To' ('artificial object and 'has energy input' some 'solar energy')
'solar radiation receiving surface' 'participates in' some 'solar radiation'

Then, solar thermal collector, PV cell, solar power unit, PV panel and solar thermal power unit will be inferred as subclasses of solar radiation receiving surface.

Does that fit your purpose?

[stap-m]

I like the proposal by @l-emele .

'solar radiation receiving surface' 'participates in' some 'solar radiation'

The solar radiation process doesn't necessarily involve any surfaces. Yet, its potential subclasses global radiation and direct normal radiation (#1076) may do.

[carstenhoyerklick]

Yes, this sounds useful for me. I need it to define the orientation of solar radiation measurements. But we also need to be able to describe orientations of solar thermal collectors and PV cells and PV panels too.

[jannahastings]

After discussion of the definition of surface with @fabianneuhaus, we propose:

surface: defined A tangential proper part of an object that extends in two dimensions.

where tangential proper part is a subclass of fiat object part from BFO, and is from the Region connection calculus and means that the part is at the boundary of the object.

[l-emele]

Okay, then I think this issue is ready for implementation.

[l-emele]

Any reason why this issue is not yet implemented?

[stap-m]

I can implement.

[stap-m]

The proposed equivalent class
'solar radiation receiving surface' 'Equivalent To' ('artificial object and 'has energy input' some 'solar energy') isn't valid when we make surface a subclass of fiat object part...
The easiest would be to broaden the domain of has energy participant to material entity instead of only artificial object. Wold that break anything?

[stap-m]

Then, solar thermal collector, PV cell, solar power unit, PV panel and solar thermal power unit will be inferred as subclasses of solar radiation receiving surface.

Maybe because of being a surface instead of an artificial object now, this inference doesn't work.
We could add the axiom has part some solar receiving surface to these artifitial objects and then create another equivalent class with artificial object ans (has part some solar receiving surface). Is there a fancier way to create this umbrella class?

[l-emele]

Yes, I think, PV cell and solar thermal collector should get the axiom has part some solar receiving surface. Later, when we also have a solar measurement device, that should also get this axiom.

And I also think that an equivalent class artificial object ans (has part some solar receiving surface) is the right way to construct this umbrella class. The label could be something like a solar receiving object or solar receiver. @carstenhoyerklick : Any suggestion for a good label?

[carstenhoyerklick]

I think solar receiving object would to. A 'solar receiver' is often something different. In concentrating solar power, the element which receives the concentrated radiation (a tube in a parablic trough collector) or a black element on top of a tower is the 'solar receiver'. This is in general something more specific, that our object here.

[stap-m]

I add the following def to it A solar receiving object is an artificial object that has a solar radiation receiving surface as part. OK?