Qi Calculator For Multilayered Sheets

MWS sheet Qi and U value Calculator

Qi as per ISO9050

Qi represents the secondary heat transfer factor towards the inside for glazing in buildings

Mainly used for IR products. 

This factor accounts for the portion of incident solar radiation that is first absorbed and then transferred into interior space.

Select No of layers

Select or Input each layer Thickness, Thermal conductivity, Solar transmission and reflection coefficients.

thickness and Air gap

User material can also be added.  Use the default film coefficient, and temp.

Click Calculate for Qi value.

The calculator report Qi value 

along with U, Total transmission, reflection, absorption and SHGC.

Thermal Technical Reports

Calculation of U-Value as per ISO 10292 for Solid Sheet Double Glazing Systems

Thermal Simulation and The U value of Multiwall Sheet and Standards

Analytical Heat Transfer Factor (Qi) and Thermal Transmittance (U) Calculation of Multiwalled Sheets

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POLYVANTIS CALCULATOR TEHNICAL REPORTS