Hello everybody,

I am new at the forum and have a question regarding a not so common object. I am busy trying to calculate the cooling capacity needed on board of a sailing yacht. I have created the yacht in rhino with all flat, planar surfaces and divided it into different rooms.

In Grasshopper I used the create HB surface component to create all the HB surfaces which are connected to the HB room component to create the rooms. I used this method instead of using the HB room from solid component, because I need to give the surfaces of the model all different constructions/insulations.

The whole model consists of 44 separate rooms. From these rooms I have 3 rooms which arenâ€™t recognized as closed rooms in the HB Room component, while when I bake the output of these rooms they will be closed solid polysurfaces. How is this possible? And how am I able to make HB Room recognize the surfaces as a closed solid polysurface? All the other rooms are closed, so that is a good thing.

Apart from these non-closed rooms, the calculation is running and I am getting some outputs (the calculation will take about 25-30 minutes, it is quite a big file). However, there are some severe errors coming from the HB Model to OSM component. These are the following errors:

- ** Severe ** For zone: AFTMAST_4F4D5B87 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: CPAFT_11D2CC21 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: CPFRONT_BB180CA9 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: ENGINEROOM_DC135FEE it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: FRONTMAST_A3530F73 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: FURNITURE_1_C53B8393 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: FURNITURE_2_095A267A it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: KEELINSIDE_B6F22639 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: LA10_B052869D it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: LA14_0AFD81BC it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: LA15_4D21CEAE it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: LA17_A28665B7 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: LA18_5FED5ADD it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: LA1_D5CE3696 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.
- ** Severe ** For zone: LA5_16622675 it is not possible to calculate the volume from the surrounding surfaces so either provide the volume value or define all the surfaces to fully enclose the zone.

These errors are telling me that there are 15 rooms in total which are non-closed, is that correct? How can these rooms be not closed, as they where closed in the beginning (at the HB rooms componentâ€¦)? And the funny thing is, that the 3 rooms that werenâ€™t closed at the HB room component donâ€™t come back in these severe errorsâ€¦ How is all this possible?

And is there a way to find the â€śbadâ€ť surfaces of these rooms which may cause these errors? In the report I can find something like : â€śuse Output; Diagnostics; DisplayExtraWarnings; to show more details on individual zonesâ€ť. Is this a way to find the â€śbadâ€ť objects in the simulation? And how to do this?

I know these are a lot of questions, but I hope you can help me solve these issues. Thankyou for now!