 The intent of this video is to show how you can do daylight simulations and daylight optimizations with the inside e-coject analysis. So we'll look at input parameters, how the tool calculates output and visualization and try to give you some insight on daylight simulations with the inside e-coject. I've now opened the e-coject environment and we're going to take a look at how we can optimize our design and simulate daylighting with the inside e-coject. Just to start out, I just took in this really nice project from Henning Larsen Architect, which is a net-zero building that has really implemented a lot of the cool things about shading design, daylight simulations, atriums, baffles, etc. So if we go to the cutoff here, you'll see that we really have a nice distribution of daylight with inside the building. The reason for optimizing the daylight levels with inside the building is really that about 20% of our energy needs is used for lighting up our building with artificial lighting. So be able to increase the amount of daylight coming into the building means that we can decrease the electrical bill and thereby making it more sustainable. So to show how this is really working, I'm just going to close this project down and I'm going to a very simple example here. So the way that we are calculating daylight with inside e-coject is a lot of time really using this analysis grid here. One important thing is to make sure that the directional arrow is pointing from the inside to the outside so that we don't have any reflections coming into the room and to have a boundary insert of the grid to not have any pollution from the outside to the inside. And as well, if we have multiple rooms and we have one room with a lot of daylight and some rooms with lesser daylight, it's really difficult to visualize the grid in a way that it makes sense. So let's just go to the analysis grid here and let's turn it off. And then what I want to do is I'm just marking out the area where I want to place my grid. And I'm using the outer fit here, within, select the objects, the axis, choosing a boundary insert as mentioned before, and a specific cell size. So now you see that the grid really fitted in here. And if you go to the 2D slice, you will see that it's really consisting of different levels. I want to go to about 760 which is about this height. And the next thing I'll do is make sure that my climate data are updated and then you're ready to do your daylight simulation. So let's go into lighting design, choose natural daylight over the analysis grid. And if you choose 3D volumetric, I'll do that. It will kind of make the grid in different heights to kind of make a 3D grid. So let's go to next, see how many rays will be ray tracing the geometry. I'll set this to low to speed up this video. And then the design sky luminance, which we can have helped to calculate from the trinket lens formula or the model latitude. So let's choose the sky conditions. And it's really important to say that it's quantitative daylighting we're doing with inside Ecotec because it's only depending on geometry, glacing radios and glacing materials and material properties in general. So let's go to next and you can really apply two different methods. Increase accuracy mode, which is taking into consideration glacing materials, reflectance of external obstructions, etc. and the regular area method. So in the startup process, I want to use this method down here because we might not have defined all the parameters for materials, etc. So I just want to look at the geometry, making sure that the geometry allows a good amount of daylighting and with a good distribution with inside the building. And then on a later stage go in and work with my materials and glacing properties, etc. So let's just take next and just say OK. And now you could take this for calculating the daylight levels for the different heights of the grid. And those things can be set up here in grid management, how many cells, the height where the simulation starts and how high it should be and how many cells it should be in the set direction here. So let's go down to let's say 700 and 800. And look at our results here. So if we go to the top, we can see that there's multiple ways that we can animate this. We can show grid lines, we can shade the grid, we can show the contours. We can clip to the minimum value displayed here, let's say that's a 5 for example. And then we can say clip to that. Good. We just need to right click one time there. So this is one of the genius thing with inside Ecotec that you're really allowed to use this as an identifier looking at the distribution of light with inside the room in comparison to the geometry. So when this is done, you can also apply a full 3D volumetric if you want to do that. So that's a bit more tricky here, let's go like that. So you'll see it really makes a full 3D grid with inside the building. Let's go here, we can also show it in 3D to have kind of visualized where we'll have a lot of daylight coming in. And we can also look at daylight levels which is a bit more qualitative. And we should be around 250 to 2000 looks to be with inside a reasonable amount of light. Are we going above that? We'll have probability to have glare. Good. So you can also export the analysis grid. So you can pull it back in as model analysis data as a GRD file. Quite effective to save multiple simulations. And if you turn on the grid here, you can also do some performative functionality to really say, OK, I want a 5% daylight factor at this point. And you can go to your script command and take this direction here and just say, OK, I want a 5% daylight factor at that point. How big should my window be? OK, so this is something that you can apply and just helping you to figure out the amount of placing to have the right interior conditions with inside your building.