I am a student learning Grasshopper and Honeybee.
For my Thesis Project I am trying to quantify the Thermal Benefits of Green Facades.
Can someone please tell me how to make a Vertical Green Facade on Honeybee, so that I can simulate the cooling load reduction with Green Facade?
Is it possible to measure reduced cooling load by both shading and evapotranspiration?
Thanks for the response. I looked at the File you sent me, and I am getting an error when I tried to read the results. Can you please tell me what this error is for?
I am uploading a picture of the error message.
I also found a study regarding simulations of Green Facades in Energy Plus. A model for Green Facades was created for the study. This is the link of the study:
These are some of the properties for the Green Facade Model that were mentioned in the study:
Is it possible to change the characteristics of the Material Input in EP Construction to modify it for Green Facades? if so, should the values be modified in the Panel connected to the EP Construction or in the Energy Plus Library?
PS: I have watched all your tutorials on Energy Modelling with Honeybee and found them a great way to learn, thanks a lot for the detailed explanations!
I think the subject is far more complex than you think.
Plants cannot be modeled as simple objects. They indeed have influence on hygrothermal confort, but the building it self has influence on the plant behaviour.
Three suggestions to go further:
1 - read “microclimate, plants and fauna” writen by stoodjestike and barkman
2 - look for the thesis of Christian Kongsgaard, and his livestock component (on this forum and his personal website).
3 - Let keep in touch. I’m façade engineer for ten years now, and this thema is my subject of research as well.
Thanks for your response!
I am studying Facade Engineering too, and this topic is very interesting for me.
You are right, I do realise the complexity of the subject.
I looked at the Livestock Component that you mentioned. It sure looks like a very useful tool, however I am a beginner with Grasshopper, and haven’t used much of Python. Do you think it would be advisable for me to use this component as a newbie?
I am trying to arrive at an approximate value for my present study, so could you suggest which would be the best way to achieve this goal?
I’m a little late to the party, especially with 1.0 out on the town, but I made a component today that creates Material:RoofVegetation inputObj that feeds into HB EP construction. @Jameela incase two years later this would be helpful, @chrisoettinger my biggest error educing factor is typos and spelling error; incase this helps you in your ventures
I went down the omg but the physics rabbit hole this morning wondering how to explore green roof’s when it comes to PHPP inputs.
** edit with the correct component
The component will RED BOX OF STRESSED until the first 4-5 inputs are given data. GreenRoofGnome_1.ghuser (6.3 KB)
Hi, I’m trying to study the effects of plants on Microclimate Simulation, so I’m very interested in kongsgaard’s research. But I couldn’t open kongsgaard’s home page link to get “livestock.”. I don’t know if it’s my network restrictions. If you can give me a new link, I will be grateful!
Hope you are good
Kindly I have a question! After reading this conv can I understand that we can not do thermal or daylight simulation for green facades?? Not roof
If yes plz can you send any example for a green facade??
Thank you so much for your help or any other help
The latest development version of the LBT Plugin has a component called “HB Vegetation Material” that can be used to account for the effects of a greenroof in energy or thermal comfort simulation. You can get the latest development version using the LB Versioner component or you could just wait a couple of months until the next stable relase.
I was testing out the “HB Vegetation Material” but had a few issues. The problems I came across were from trying to use it as a ground material rather than roof material so maybe it’s just that I’m using it for the wrong puprose but i’ll post anyway in case it’s useful for others.
First is that if I plug the Vegetation material straight into the Ground Component it comes up with an error because there’s no roughness value (see screenshot 1)
Ah, that’s a bug. Thank you for finding and reporting it. I just pushed a fix and the component works well afterwards:
I don’t see any shade in either of your screenshots. Only a Room. But the vegetation material seems to be well accounted for in the energy and thermal mapping simulations. For example, comparing thermal comfort above an asphalt parking lot and a tree with grass on the ground:
@chris Hey Chris ,I have a question. I’m trying to simulate the impact of vertical vegetation on outdoor comfort using Honeybee. This is the script that I’ve come up with, and I did get a logical result. However, I don’t know if it is scientifically correct. What do you think?