2D:Dialog ClimateFileDetails - Versionsgeschichte

Barbara: /* .WET files: /

2009-03-25T09:32:12Z

*.WET files:

← Nächstältere Version		Version vom 25. März 2009, 11:32 Uhr
Zeile 141:		Zeile 141:
	<B>"Rain":</B>		<B>"Rain":</B>
	Depending on the selected temperature option (see above) it may be necessary to suppress rain.<BR>Otherwise, you have the option to bypass the usual conversion from normal rain to driving rain and to directly read and use rain data measured on the facade (if available).<BR>		Depending on the selected temperature option (see above) it may be necessary to suppress rain.<BR>Otherwise, you have the option to bypass the usual conversion from normal rain to driving rain and to directly read and use rain data measured on the facade (if available).<BR>
	For this purpose, set the rain coefficients to R1=1 and R2=0.<BR>		For this purpose, set the [[1D:Dialog_Orientation \| rain coefficients]] to R1=1 and R2=0.<BR>

	<P>		<P>

Barbara: /* .WET files: /

2009-03-25T09:28:58Z

*.WET files:

← Nächstältere Version		Version vom 25. März 2009, 11:28 Uhr
Zeile 140:		Zeile 140:

	<B>"Rain":</B>		<B>"Rain":</B>
	Depending on the selected temperature option (see above) it may be necessary to		Depending on the selected temperature option (see above) it may be necessary to suppress rain.<BR>Otherwise, you have the option to bypass the usual conversion from normal rain to driving rain and to directly read and use rain data measured on the facade (if available).<BR>
	suppress rain.<BR>
	~~ <BR>~~
	Otherwise, you have the option to bypass the usual conversion from normal
	rain to driving rain and to directly read and use rain data measured on the
	facade (if available).<BR>
	For this purpose, set the rain coefficients to R1=1 and R2=0.<BR>		For this purpose, set the rain coefficients to R1=1 and R2=0.<BR>

Barbara: /* .WET files: /

2009-03-25T09:24:01Z

*.WET files:

← Nächstältere Version		Version vom 25. März 2009, 11:24 Uhr
Zeile 31:		Zeile 31:
	A *.WET file created for Holzkirchen contains the <B>measured		A *.WET file created for Holzkirchen contains the <B>measured
	surface temperatures</B> of a 'white' (		surface temperatures</B> of a 'white' (
	[[Details:ShortWaveRadiationAbsorptivity \| >a<small>s</small>]] ~ 0.4)		[[Details:ShortWaveRadiationAbsorptivity \| a<small>s</small>]] ~ 0.4)
	and a 'black' (a<small>s</small> ~ 0.9) west-facing facade		and a 'black' (a<small>s</small> ~ 0.9) west-facing facade
	specimen modeled after an ETICS. If you want to expose your component		specimen modeled after an ETICS. If you want to expose your component
Zeile 96:		Zeile 96:
	ground temperatures, insert a sufficiently thick layer of soil in front of the		ground temperatures, insert a sufficiently thick layer of soil in front of the
	component and set the exterior surface of this layer to the measured temperatures.<BR>		component and set the exterior surface of this layer to the measured temperatures.<BR>





	Using measured ground temperatures also requires proper treatment of other		Using measured ground temperatures also requires proper treatment of other
	climate quantities:~~<BR>~~		climate quantities:
	<BR>		<BR>
	"Relative humidity":<BR>		"Relative humidity":<BR>
Zeile 110:		Zeile 115:
	Since there is <B>"no radiation"</B> within the ground, the solar radiation		Since there is <B>"no radiation"</B> within the ground, the solar radiation
	data from the climate file are ignored.<BR>		data from the climate file are ignored.<BR>
	~~<BR>~~
	"Rain":<BR>		"Rain":<BR>
	Since there is <B>"no rain"</B> within the ground, the rain data from the climate		Since there is <B>"no rain"</B> within the ground, the rain data from the climate
Zeile 128:		Zeile 133:
	<B>"Radiation":</B>		<B>"Radiation":</B>
	Depending on the selected temperature option (see above) it may be necessary to		Depending on the selected temperature option (see above) it may be necessary to
	suppress solar radiation.~~<BR>~~		suppress solar radiation.
	~~ <BR>~~
	Otherwise, you have the option to bypass the usual conversion of solar radiation		Otherwise, you have the option to bypass the usual conversion of solar radiation
	for the specific orientation and inclination of your facade, and to directly		for the specific orientation and inclination of your facade, and to directly

Len: Die Seite wurde neu angelegt: = Dialog: Climate File | Details =
Some climate formats offer additional options:
=== *.WET files: === Bild:DialogKlimaErweiterteEinstellungenWET_3.gif ...

2008-07-03T08:24:26Z

Die Seite wurde neu angelegt: = Dialog: Climate File | Details = Some climate formats offer additional options: === *.WET files: === Bild:DialogKlimaErweiterteEinstellungenWET_3.gif ...

Neue Seite

= Dialog: Climate File | Details =


Some climate formats offer additional options:


=== *.WET files: ===

[[Bild:DialogKlimaErweiterteEinstellungenWET_3.gif]]


[[Details:WET-File | *.WET]] files can
contain additional measured data that might be useful for a
hygrothermic simulation:




"Temperature":
WET files may contain several columns with measured temperatures.
WUFI usually reads and uses the air temperature. However, it may
optionally read and use surface temperatures of a white and a
black facade or the ground temperatures at different depths. 
 

"Black surface", 
"White surface":

[[Bild:Oberflaechen_1.gif]]

A *.WET file created for Holzkirchen contains the measured
surface temperatures of a 'white' (
[[Details:ShortWaveRadiationAbsorptivity | >as]] ~ 0.4)
and a 'black' (as ~ 0.9) west-facing facade
specimen modeled after an ETICS. If you want to expose your component
to the same surface temperatures, select the respective option and set the
[[2D:Dialog_EditSurfaceCoefficients | heat transfer coefficient]]
for the surface to a large number. WUFI then reads the corresponding
temperature from the file and uses it as the 'air temperature' for
the calculation; the large heat transfer coefficient takes care that
the surface assumes the same temperature. 
Using measured surface temperatures also requires proper
treatment of other climate quantities: 
  
"Relative humidity": 
The relative humidity in the climate file is based on the temperature contained
in the column [[Details:WET-File | 'Exterior air temperature']].
If, instead, one of the surface temperatures is used as the 'air' temperature,
this combination will result in wrong water vapor partial pressures at the component
surface. The option "Adjust relative humidity" adjusts the relative humidity
read from the file so that the correct partial pressures result at the surface. 
  
"Radiation": 
If the surface temperature of the component has been set to assume the measured surface
temperature, "No radiation" must be used for the calculation, since the thermal
effect of the solar radiation is already included in the measured temperature. 
  

"Ground surface":

For calculating heat transport within the ground it may be helpful to use
measured ground surface temperatures as boundary conditions. Select
this option and set the
[[2D:Dialog_EditSurfaceCoefficients | heat transfer coefficient]] for
the surface to a large number. WUFI then reads the corresponding temperature from
the file and uses it as the ambient air temperature for the calculation; the
large heat transfer coefficient takes care that the surface assumes the same
temperature. 
The ground surface temperatures recorded in Holzkirchen are measured a few
centimeters below the actual surface. 
Using measured ground surface temperatures also requires proper treatment of
other climate quantities: 
  
"Relative humidity": 
The relative humidity in the climate file is based on the temperature contained
in the column
[[Details:WET-File | 'Exterior air temperature']]. If,
instead, the ground surface temperature is used as the 'air' temperature, this
combination will result in wrong water vapor partial pressures at the component
surface. The option "Adjust relative humidity" adjusts the relative humidity
read from the file so that the correct partial pressures result at the surface. 
  

"50 cm below ground surface", 
"1 m below ground surface":

For the hygrothermal simulation of a component in contact with the ground (e.g. a
cellar wall) it may be helpful to use measured ground temperatures as
boundary conditions. Select the respective option and set the
[[2D:Dialog_EditSurfaceCoefficients | heat transfer coefficient]]
for the surface to a large number. WUFI then reads the corresponding temperature
from the file and uses it as the ambient air temperature for the calculation;
the large heat transfer coefficient takes care that the surface assumes the same
temperature. 
If you want to allow for the thermal effect which the component has on the
ground temperatures, insert a sufficiently thick layer of soil in front of the
component and set the exterior surface of this layer to the measured temperatures. 
Using measured ground temperatures also requires proper treatment of other
climate quantities: 
  
"Relative humidity": 
The soil usually has a fairly "constant relative humidity"; if plant
cover is present, the humidity is at least about 99%, since otherwise the
plants could not overcome the soil's hydraulic tension and were not able to
draw water from the ground. For simulation of components in contact with the
ground, WUFI therefore uses a constant relative humidity as boundary condition
whose value you can enter according to your wishes. 
 
"Radiation": 
Since there is "no radiation" within the ground, the solar radiation
data from the climate file are ignored. 
  
"Rain": 
Since there is "no rain" within the ground, the rain data from the climate
file are ignored. If you want to simulate the uptake of (pressureless) ground
water, it would be preferable to use an appropriately tailored
[[Details:KLI-File | *.KLI file]]. 
  



"Relative humidity":
Depending on the selected temperature option (see above) it may be
necessary to adjust the relative humidity for a different temperature level
or to set it constant. 
  

"Radiation":
Depending on the selected temperature option (see above) it may be necessary to
suppress solar radiation. 
  
Otherwise, you have the option to bypass the usual conversion of solar radiation
for the specific orientation and inclination of your facade, and to directly
read and use radiation data measured on the facade (if available). 
  

"Rain":
Depending on the selected temperature option (see above) it may be necessary to
suppress rain. 
  
Otherwise, you have the option to bypass the usual conversion from normal
rain to driving rain and to directly read and use rain data measured on the
facade (if available). 
For this purpose, set the rain coefficients to R1=1 and R2=0. 
 

Also, see [[Details:WET-File | The *.WET Format for Climate Data]]
for details.





 


=== *.KLI files: ===

[[Bild:DialogKlimaErweiterteEinstellungenKLI_2.gif]]


[[Details:KLI-File | *.KLI]] files contain data describing
the outdoor climate (rain, radiation, air temperature, relative humidity) and
data describing the indoor climate (air temperature, relative humidity). This
dialog allows you to specify which one of the two shall be applied to the surface
segment under consideration.



 


=== *.TRY, *.DAT, *.WAC, *.IWC, *.WBC files: ===

[[Bild:DialogKlimaErweiterteEinstellungenIWC_3.gif]]


No options are available for these file types.

2D:Dialog ClimateFileDetails - Versionsgeschichte

Barbara: /* *.WET files: */

Barbara: /* *.WET files: */

Barbara: /* *.WET files: */

Len: Die Seite wurde neu angelegt: = Dialog: Climate File | Details = Some climate formats offer additional options: === *.WET files: === Bild:DialogKlimaErweiterteEinstellungenWET_3.gif ...

Barbara: /* .WET files: /

Barbara: /* .WET files: /

Barbara: /* .WET files: /

Len: Die Seite wurde neu angelegt: = Dialog: Climate File | Details =
Some climate formats offer additional options:
=== *.WET files: === Bild:DialogKlimaErweiterteEinstellungenWET_3.gif ...