Your model took me about 40 minutes on a fast computer, and that is too high to trouble shoot any issues. In general, I would reduce the analysis grid's number of cells for quick analyses, until you feel it is about right, then you can increase the number of cells for final analyses. I think it would simplify the model and make calculations faster. I have a scripts that helps identify these 0-area objects but there were so many that I need to re-write my script to take care of this (delete them automatically). What type of file did you use to import the model? There are a lot of 0-area wall objects, which converts into these circular objects in the Visualization window. Your walls have a good 70% reflectivity.Ĥ. Same thing with your ceilings: they use the same colour (reflectivity) as your floor (40%), which is in line for your floor objects, but quite dark for typical ceilings (usually in the 80-90% range). This means it would absorb most of the light, so any bouncing light would be absorbed and this would result in a darker space than actuality. Be careful about your material: I see that the ROOF object has a colour of almost 0 - perfectly black. It makes it even more difficult when your model is at an angle, as the analysis grid will not quite match up the building, with "teeth" and edges.ģ. I think some of the nodes are actually on the outside of the building it is hard to see, but if any nodes can see the outside, then they will pick up these high values. The issue you were having with some light coming into your space is, I believe, caused by the analysis grid itself. I am working on a scripts that could hopefully allow the user to "clean up" their model and get rid of the extra pane, but not yet there.Ģ.
Turn off lighting analysis ecotect software#
I know it is somewhat painful to have to delete these double window pane as most CAD software will export the entire assembly that includes the two (actually 6) panes. If you want your glazing to be 60% VT and you are modeling two window panes, then you should make each window pane with a VT = 77.45%, so that doubling this would give you a cumulative 60% VT for each assembly. Your glazing objects are doubled - we have discussed this in a separate post - so that your VT is actually not quite correct. The video has been kindly provided by Energy Solutions Consultants who work closely with FM Expert Ltd on these simulations.I have had a look at your model and in general, it looks fine and I was able to run a acceptable Radiance pass at it but there were a few items that would require your attentions for better results:ġ. The video link below shows a simulation of daylight passing through a building. A more suitable position can then be chosen and retested before the installation begins. This can be mapped onto the chosen position of the CCTV cameras and the effect of glare analysed. The daylight analysis software can simulate the moving pattern of daylight through the day and at different times of the year when the sun is either higher or lower in the sky. For example a site in Hemel Hempstead could not make detect any decent images from their reception camera in the afternoon due to the low position of the sun causing glare.
When reviewing the actual installations some camera operatives complain that certain cameras are useless depending on the time of day due to solar glare. The overlapping angles show how each camera can cover all risk points of access to a facility. CCTV cameras are frequently planned on a 2D map of a facility which shows the angle of coverage from each camera position. The software is also now being used as part of a security risk review plan.
It can also be used as part of an energy reduction program where you can turn off lighting when sufficient natural light fills a building. Daylight analysis software has historically been used for thermal loading analysis of buildings as well as for lighting design.
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