U-ValueThe U-Value specific the the components part concerned (as calculated with a U-Value Calculator, for example). Remark: If specific U-Value is provided by a layered construct entered within a U-Value calculator, the checkmark left to the button "Layered Construct" is marked checked and this field is marked read-only. To override the value manually uncheck the checkmark left to the button "Layered Construct".
LengthThe length to be used for the respective U-Value above
Coupling Coefficient L2DThe thermal coupling coefficient specific to the component under consideration (as calculated with a two dimensional thermal heat bridge simulation software, for example).
U * lThe result of the multiplication of respective values of U and l.
Total U * l The sum of respective U * l multiplications.
Psi-Value (Ψ) The resulting Psi-Value (Ψ).
Up to two U-Value and Length pairs can be entered. The formulas used for this calculation are defined in the EN ISO 10211. Remark: Obtaining coupling coefficient L2D can be accomplished with appropriate two dimensional, stationary, thermal heat bridge simulation software. For example AnTherm provides class A precision method of such calculation.
Calculating U-Values with U-Value Calculator
To calculate respective U-Value with an integrated U-Value Calculator, press the button "Layered Construct", build or load the layered construct within the U-Value Calculator which is shown thereafter and confirm the calculated result by pressing the Ok-button therein.
The calculated U-Value of a layered construct is shown in the U-Value field which is then marked read-only. The checkmark left to the button "Layered Construct" confirms, that the value shown is based on respective layered construct.
The actual data of a layered construct can be changed at any time by pressing the button "Layered Construct" again and editing the data within the U-Value Calculator shown thereafter.
- Remark: The actual data of a layered construct is retained until the application is exited. To save the data of each respective layered construct use the "Save" function within the U-Value Calculator.
- Remark: You can drag & drop any layered construct (as it is available from a U-Value Calculator if it is run separately) onto the one of U-Value / Length blocks in this window also.
- Remark: To override the value manually uncheck the checkmark left to the button "Layered Construct".
- Remark: If no data of a layered construct has been applied yet, the checkmark left to the button "Layered Construct" is shown greyed.
Entering the Thermal Coupling Coefficient L2D obtained from AnTherm
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