Urban Heat Island Effect Modeling?

Been reading about this. Anyone got any experience using Energy Simulator or Hevacomp CHAM to model this effect?

I am guessing, but you could model a gigantic room with transparent walls, the buildings as 'furniture', wind simulated using a gigantic diffuser? :-)

I suppose you could then take the results and feed them into a normal building model as inputs?

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  • Hi Dominic,

    This is not something I have come across being modelled in Energy Simulator or Hevacomp myself - I think it may fall outside the intent of the software as generally they would be more geared around internal conditions rather than external, for comfort levels indoors and to size plant/hvac/building services etc, and to comply with relevant regulations and so on. However, CHAM may be able to provide you with solutions and guidance on this if you contact them directly - please find details here.

    Shane Regan | Principle Building Performance Support Engineer

        

    Answer Verified By: dominic SEAH 

  • Thanks for confirming. Part O is targeted at residential and bedrooms in particular. TM59 does look at corridors, which as circulation spaces would be interesting for station / transport facilities designers (one of OBD's key markets). And if we are looking at circulation spaces that might overheat, the microclimate around the station comes to mind. Even more relevant if you are looking at bus stations, trams etc.

    As mentioned elsewhere, Part O and overheating highlights the need to have close bi-directional feedback between the architect (physical facade design) and the analytical modeler. This is something that OBD/ES should shine at (provided that everything is easy enough for and the techy bits shielded from the architect :-).

    Anyways, found this interesting CIB report below. Envi-met looks quite interesting. Thermal comfort, energy modeling is de rigueur for BIM authoring apps these days, driven by the building regs. But, the landscaping architects have been slow to bim up and utilise energy modeling. Might be an opportunity to team up and get in early before the market gets crowded? OpenSite + Vue Plantfactory + Envi-met + OBD/ES at site level. OpenCities and iTwins at the meso level?

    Urban heat island effects are kind of like Part O facade elements, usually selected by the architect then thrown over the wall to the poor energy modeler who then has to import the architects geometry, edit, run the model, and report back in visual easily digestable format. Rinse and repeat. Doesn't take much before you run out of fee before reaching an optimised solution.

    /cfs-file/__key/communityserver-discussions-components-files/343683/CIB_5F00_DC23047.pdf

  • Hi Dominic,

    Many thanks for the information, the insight is very useful. I have directly brought this to product management and they are very interested in such capabilities. To ensure this gets consideration could you please submit this to our OpenBuildings Ideas portal?

    How to submit ideas for OpenBuildings Designer - OpenBuildings | AECOsim | Speedikon Announcements - OpenBuildings | AECOsim | Speedikon - Bentley Communities

    Shane Regan | Principle Building Performance Support Engineer

        

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