May I convert the climate data myself?

[yang]

Hello,

If I could get the full information of the local climate, can I convert it into the .wbc format that WUFI uses?

Thank you.

[Christian Bludau]

Hello Yang,
in the WUFI program folder there is a folder called tools. There you can find a xls-file called CreateClimateFile.xls. This allows you to create wac files for WUFI.
Please also check out our homepage "www.wufi.com" -> Service -> Demo Films
Christian

[yang]

Hello Yang,
in the WUFI program folder there is a folder called tools. There you can find a xls-file called CreateClimateFile.xls. This allows you to create wac files for WUFI.
Please also check out our homepage "www.wufi.com" -> Service -> Demo Films
Christian

Thank you, Christian,

I have finished the .xls table, but the button "Export to .WAC File" does not work...

What is the reason?

Thanks for helping
yang

[Christian Bludau]

Hello Yang,

probably your Excel is blocking the macros. You have to enable them somewhere in the security settings.

Christian

[yang]

Hello, Christian,

thank you for help and I have made it.

I have another questions about the surface climate settings:
1) The long wave emissivity is recommeded to set as 0, when do we need to change it?
2) Just like the first question, when do we need to change Sd value or vapor transfer coefficient?
3) For exterior climate, what do R1 and R2 mean?

Thank you for helping.
yang

[Christian Bludau]

Hello yang,
1) if you like to calculate the effects of long wave emission (light night time cooling) then you have to set the emissivity (has to be used with the hook explicit radiation balance to get good results)
2) the sd-value/vapor transfer is to consider paintings or thin coatings (do not use that together with rain).
3) With this fields the driving rain is calculated. As it is written bellow, Rain = Rain * (R1 + R2 * WindVelocity). For a vertical surface R1 usually is 0 while R2 is 0.07, for horizontal surfaces R1 = 1 and R2 is 0 (that means all water hits the surface).
-> The amount of the rain, which gets on the surface for suction is set with the "rain reduction factor" (=absorption factor - bad translation). On a wall (vertical) this is usually 0,7 as 30% are splashing away. For a roof it is 1 as all rain hits the surface. To switch of rain, set it to 0.

Please see also the programs help file for that (Button Help)
Christian