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3.1 Building description 57<br />

Case B5<br />

Case B6<br />

Xenon 12.7 0.019<br />

TiPS_3,AFG 3.1 0.583 0.280 0.220 0.856 0.045 0.055 0.000 0.060 0.841 1.000<br />

FCMFTIAC3,AFG 3.1 0.411 0.391 0.457 0.672 0.249 0.189 0.000 0.840 0.037 1.000<br />

Xenon 12.7 0.023<br />

GREEN_3,AFG 3.2 0.610 0.059 0.059 0.833 0.070 0.070 0.000 0.840 0.840 1.000<br />

Xenon 12.7 0.023<br />

GREEN_3,AFG 3.2 0.610 0.059 0.059 0.833 0.070 0.070 0.000 0.840 0.840 1.000<br />

GREEN_3,AFG 3.2 0.610 0.059 0.059 0.833 0.070 0.070 0.000 0.840 0.840 1.000<br />

Xenon 12.7 0.019<br />

GREEN_3,AFG 3.2 0.610 0.059 0.059 0.833 0.070 0.070 0.000 0.840 0.840 1.000<br />

Xenon 12.7 0.019<br />

CMFTIAC3,AFG 3.1 0.411 0.457 0.391 0.672 0.189 0.249 0.000 0.037 0.840 1.000<br />

Explanation <strong>of</strong> symbols used in <strong>the</strong> Table 3.3:<br />

Mode – an identifier to determine <strong>the</strong> glass layer in debase,<br />

Th. – glass thickness; mm,<br />

Tsol – <strong>solar</strong> transmittance <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

Rsol1 – <strong>solar</strong> reflectance <strong>of</strong> <strong>the</strong> exterior side <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

Rsol2 – <strong>solar</strong> reflectance <strong>of</strong> <strong>the</strong> interior side <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

Tvis – visible transmittance <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

Rvis1 – visible reflectance <strong>of</strong> <strong>the</strong> exterior side <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

Rvis2 – visible reflectance <strong>of</strong> <strong>the</strong> interior side <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

Tir – <strong>the</strong>rmal longwave transmittance <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

ε1 – longwave emittance <strong>of</strong> <strong>the</strong> exterior side <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

ε2 – longwave emittance <strong>of</strong> <strong>the</strong> interior side <strong>of</strong> <strong>the</strong> <strong>glazing</strong> layer,<br />

keff – effective conductivity <strong>of</strong> <strong>the</strong> <strong>glazing</strong> system; W/mK.<br />

The next parameters <strong>of</strong> <strong>glazing</strong> systems such as visible transmittances, U-factor, <strong>solar</strong> heat<br />

gain <strong>and</strong> shading coefficients are determined with <strong>the</strong> help <strong>of</strong> <strong>the</strong> latest release <strong>of</strong> <strong>the</strong><br />

computer program WINDOW 5.2 (2006). The algorithm for analyzing window <strong>the</strong>rmal<br />

<strong>and</strong> optical performance is developed by <strong>the</strong> National Fenestration Rating Council (NFRC)<br />

based on <strong>the</strong> ISO 15099 st<strong>and</strong>ard (2003). The results <strong>of</strong> <strong>the</strong> calculations <strong>of</strong> <strong>the</strong> <strong>the</strong>rmal <strong>and</strong><br />

optical transmission properties for twelve cases are presented below in Table 3.4.<br />

Table 3.4: Thermal <strong>and</strong> optical properties <strong>of</strong> <strong>glazing</strong> systems.<br />

Case no. keff Width U-factor SHGCc SCc VTc RHG<br />

Case A1 0.0187 19.050 1.16 0.47 0.54 0.66 343.55<br />

Case A2 0.0187 19.050 1.16 0.42 0.48 0.66 310.31<br />

Case A3 0.0201 18.975 1.23 0.54 0.62 0.72 400.80

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