Three Phase vs Five Phase

[Teja5zz]

hello,
i am trying to run the simulations using three phase method and five phase method for an office building, can anyone explain me what is the prime difference between these methods.
Thanks

[mostapha]

Hi @Teja5zz, this question has been asked before and I advice not to use either 3 or 5 phase unless you really have to and understand how they work.

The main difference between the two is an extra calculation for direct sunlight (aka 5th Phase). This tutorial by @sarith is a great reference to educate yourself about multi-phase daylight simulation.

An advanced tutorial for daylighting simulations

[image] As most of you are aware, earlier this year we officially released Honeybee[+]. In that post we mentioned a comprehensive tutorial for Matrix-based daylighting simulation with Radiance will be released by LBNL in a near future. We’re excited to finally share the good news that the report is officially released and can be downloaded from Radiance-online tutorials page. See the pdf file for “Daylighting Simulations with Radiance using Matrix-based Methods“ and the examples for the tutor…

[sarith]

@mostapha

great reference to educate yourself about multi-phase daylight simulation

Also section 2.4 in Eleonora Brembilla’s dissertation.

[Teja5zz]

Thank you very much.

[Teja5zz]

I was searching for this but couldn’t find it ,Thank you very much for sharing this.