Surface warnings

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EnergyPlus now uses an algorithm that detects if each zone volume is fully enclosed (think leak proof). The algorithm checks to see if each edge of each surface is used touched by just one other edge of another surface. If this does not occur the warning message that you saw will be shown. I would look at that surface and that edge in particular and check if touches another surface edge. It might make sense to visualize the model in Sketchup using Euclid or OpenStudio. It is very likely that the warning message does show a problem with the zone not being fully enclosed. If that is intentional, you can ignore the warning. If the zone is fully enclosed but the way the edges are arranged is complicated you should also feel free to ignore the warning.

I had the same problem that might be an issue with SketchUp or OS. What I found out in my case was that a Stairwell I modeled as a single space was not oriented in the same direction as the rest of the model. That led into very small differences in coordinates of adjacent walls, in order of less than one millimeter, due to the rotational translation needed between space origin and model origin. I ended up rotating the stairwell space origin in the direction of the rest of the model, then I redrew the stairwell and problem was fixed.

So I think that you should look for something similar.

I have the same problem, but I can not find the line that E + warns, even opening the file in SU. Everything looks ok. Anyone with the same problem?

The warning: * Warning * CalculateZoneVolume: The Zone="94" is not fully enclosed. To be fully enclosed, each edge of a surface must also be an edge on one other surface. * ~~~ * The zone volume was calculated using the floor area times ceiling height method where the floor and ceiling are the same except for the z-coordinates. * ~~~ * The surface "94_CEILING_1_0_0" has an edge that is either not an edge on another surface or is an edge on three or more surfaces: * ~~~ * Vertex start { 0.2121, -0.4419, 3.3000} * ~~~ * Vertex end { -1.3081, 1.0783, 3.3000} * ~~~ * The surface "94_CEILING_1_2_1" has an edge that is either not an edge on another surface or is an edge on three or more surfaces: * ~~~ * Vertex start { 2.1567, -2.3865, 3.3000} * ~~~ * Vertex end { 0.2121, -0.4419, 3.3000}

The surface IDF:

BuildingSurface:Detailed, 94_Ceiling_1_0_0, !- Name Ceiling, !- Surface Type 3, !- Construction Name 94, !- Zone Name Surface, !- Outside Boundary Condition 228_Floor_0_0_10061, !- Outside Boundary Condition Object NoSun, !- Sun Exposure NoWind, !- Wind Exposure 0, !- View Factor to Ground , !- Number of Vertices 2.6625, !- Vertex 1 X-coordinate {m} -1.6875, !- Vertex 1 Y-coordinate {m} 3.3, !- Vertex 1 Z-coordinate {m} 2.6625, !- Vertex 2 X-coordinate {m} 0.4625, !- Vertex 2 Y-coordinate {m} 3.3, !- Vertex 2 Z-coordinate {m} 0.1625, !- Vertex 3 X-coordinate {m} 0.4625, !- Vertex 3 Y-coordinate {m} 3.3, !- Vertex 3 Z-coordinate {m} 0.1625, !- Vertex 4 X-coordinate {m} -1.6875, !- Vertex 4 Y-coordinate {m} 3.3; !- Vertex 4 Z-coordinate {m}

BuildingSurface:Detailed, 94_Ceiling_1_2_1, !- Name Ceiling, !- Surface Type 3, !- Construction Name 94, !- Zone Name Surface, !- Outside Boundary Condition 265_Floor_0_0_10042, !- Outside Boundary Condition Object NoSun, !- Sun Exposure NoWind, !- Wind Exposure 0, !- View Factor to Ground , !- Number of Vertices 0.3375, !- Vertex 1 X-coordinate {m} 0.4625, !- Vertex 1 Y-coordinate {m} 3.3, !- Vertex 1 Z-coordinate {m} 0.3375, !- Vertex 2 X-coordinate {m} 3.2125, !- Vertex 2 Y-coordinate {m} 3.3, !- Vertex 2 Z-coordinate {m} 0.1625, !- Vertex 3 X-coordinate {m} 3.2125, !- Vertex 3 Y-coordinate {m} 3.3, !- Vertex 3 Z-coordinate {m} 0.1625, !- Vertex 4 X-coordinate {m} 0.4625, !- Vertex 4 Y-coordinate {m} 3.3; !- Vertex 4 Z-coordinate {m}