Urban Heat Island effect using Dragonfly

[Eiman.g]

Hi everyone,

I am currently conducting a test to evaluate the impact of incorporating greenery into the building envelope on reducing the Urban Heat Island effect using Dragonfly. I have compared three different scenarios:

1. Scenario 1: The building material is the default option.
2. Scenario 2: The building has a green roof.
3. Scenario 3: The building has a green roof along with three green walls.

However, I have encountered an issue where I am obtaining the same dry bulb temperature for all three scenarios, which doesn’t seem to make sense. I am seeking your assistance in identifying what I might be missing or overlooking.

Any insights or suggestions you could provide would be greatly appreciated.

Thank you in advance

UHI block.gh (128.3 KB)

[Eiman.g]

@chris Can you please help me?

[chris]

The other responses on the forum should answer your question if you just search for them. eg. this one:

Mitigating UHI effects with Vegetation

Hi Guys, This is my first post here and I am extremely new to Rhino-Grasshopper-LB+HB operations so please excuse me if I come across uninformed. First of, thanks for creating this tool and making it freely available! I am proposing a project for my final year thesis in which I am looking at mitigating measures for the UHI effect and the repercussions this has for thermal comfort and increases in energy demand. I have noticed the potential of Ladybug / Honeybee for climatic simulations and was…

… or this one:

Vertical City Weather Generator (VCWG)

Hello All, I recently stumbled upon the Vertical City Weather Generator, and was pleasantly surprised to see @chris & @SaeranVasanthakumar as co-authors. I find the VCWG model better than the original UWG in many regards and was wondering if there is any intention of incorporating as part of LBT ? Any additional tips/pitfalls to watch out for when trying the VCWG? Wish you a great day ahead! ps. If anyone is interested to know more about it, here is the paper: Edit 2: Apparently there is n…

Also, you should really look at hourly profiles if you are studying UHI as it’s really just a phenomena that happens after sunset and not all of the time.