Radiant Heat through Windows

Solar heat gain with roller shades, vertical blinds and Venetian blinds

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Heat gain from sun radiation through windows can be controlled with shades and blinds.

Type of Shading Transmitted Solar Energy
(%)
Reflected Solar Energy
(%)
Absorbed Solar Energy
(%)
Single or double glass without shading 75 - 80 10 - 20 10 - 20
Vertical Blinds 5 40 - 60 35 - 55
Venetian Blinds 0 23 77
Roller Shades < 25 15 - 80 20 - 65

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Related Topics

  • Air Condition Systems Air Condition systems - heating, cooling and dehumidification of indoor air for thermal comfort

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