열관류율 계산기

Clicking the button displays insulation standard data appropriate for the region (Central 1/2, Southern, Jeju).
By changing the button text for each region, the user can check the insulation standard value for the selected region.
The remaining one can be calculated based on the two input values ​​(λ, U, d).
Example: Enter λ (thermal conductivity) and d (thickness) and automatically calculate U (thermal transmittance).
When you click the button, you can calculate the required insulation thickness based on the thermal transmittance (U value) of the insulation material and print it out.
When you select A/B/C/D, images for each grade are displayed.