Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Hi Bill
You might want to try the follwing settings: The height factor refers to the width of the window or opening. You must check whether the defined opening is opened over its entire width or whether the openable part deviates from this. With this window shape, the width factor refers to how strongly the window is pushed upwards (45° in your case). This means that if your window is opened over the entire opening width, you select 1 as the height factor. To then determine the width factor, you must use triangulation to calculate how large the free area is through which the air can flow in and out through the window. With a 45° opening, not the entire cross-section of the whole window is available. If you then know what percentage of the total free opening your 45° opening is, you can derive the with-factor from this. This can mean, for example, that the height-factor is 1 and the with-factor is 0.3 (or more), which must be determined individually. At the same time, set the discharge-coefficient for opening-2 to 1 and the start height-factor for opening-2 to 0 (i.e. the window is pushed upwards from below).
I hope this can help you.
