Lighting control with DIVA, native Radiance simulation and Python for Grasshopper

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Hi Tuan,

Thanks for posting your lovely visualization of a dimming system. I do have a question though: Isn't it unfortunate that with so much glazed area, that only one bank of lights ever turns off? Now I find myself wanting to know more about the simulation.

Best,
Alstan

Hi Alstan,

Thank you for your comment.

The logic of this simulation is to work with both natural and artificial light: maximize natural lighting for the office space and minimize the use of artificial light by reaching the optimal illuminance level (250 lux). The algorithm for the simulation is working with dimmer steps which is in discrete then there is sometimes the illuminance happens bellow 250 lux. From your question is Yes. Especially at the summer solstice, too much glazing causes the illuminance near the window is too bright and  high contrast.

Thanks.

Tuan

J. Alstan Jakubiec said:

Hi Tuan,

Thanks for posting your lovely visualization of a dimming system. I do have a question though: Isn't it unfortunate that with so much glazed area, that only one bank of lights ever turns off? Now I find myself wanting to know more about the simulation.

Best,
Alstan

Tuan Tran

Thank a lot for your visualisation. This is exactely what my graduation project is about.

I hope you don't mind if i ask you a lot of questions about this. I really want to get to the botum of this and make those visualisations myself.

Let's give you a short intro to what my project is about. First of all i'm going to use heliostatic mirrors to optimize th use of daylight and secondly i want to quantify or show how this can minimize the use of electrical lighting.

Today is the first day i started to teach mysellf some rhino/grasshopper and diva. My skills in Rhino, grasshopper and diva are still poor. First of all, as i read in your title i need to install python. (for making videos i suppose?)

Could you give me a short description of how i should link up what and how to get this started.

Thanks a lot already

Bram

Hi Bram,

Thanks for your interest in the visualization. This work actually relied a lot on Radiance (the simulation engine that is used for DIVA) and Python scripting to get around with some restrictions from DIVA itself. 

The reason is that DIVA currently has not allowed you to totally control the time options for parametric run (that means you has to select every single hour for each simulation or let it run annually).

Attachment, the presentation of the work, might help to answer your question.

Hope it helps you something.

Tuan


Bram van Hemmen said:

Tuan Tran

Thank a lot for your visualisation. This is exactely what my graduation project is about.

I hope you don't mind if i ask you a lot of questions about this. I really want to get to the botum of this and make those visualisations myself.

Let's give you a short intro to what my project is about. First of all i'm going to use heliostatic mirrors to optimize th use of daylight and secondly i want to quantify or show how this can minimize the use of electrical lighting.

Today is the first day i started to teach mysellf some rhino/grasshopper and diva. My skills in Rhino, grasshopper and diva are still poor. First of all, as i read in your title i need to install python. (for making videos i suppose?)

Could you give me a short description of how i should link up what and how to get this started.

Thanks a lot already

Bram

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