Red Seal Glazier Practice Exam

Question: 1 / 400

What does "solar heat gain coefficient" (SHGC) measure?

The amount of heat lost through glass

The resistance of glass to heat

The fraction of solar radiation that enters a building through the glass

The solar heat gain coefficient (SHGC) is a critical measure in the glazing industry, as it quantifies how much solar radiation passes through a given piece of glass and enters a building. Specifically, it represents the fraction of solar energy that is transmitted as solar heat gain, and it is expressed as a value between 0 and 1. A lower SHGC indicates that less solar heat enters the building, which can be particularly significant in warmer climates where minimizing heat gain is desirable for energy efficiency and comfort.

Understanding SHGC is essential for making informed decisions about window and glazing choices, as it directly impacts heating and cooling loads in buildings, overall energy performance, and occupant comfort. Therefore, recognizing SHGC's role in determining solar heat entry helps in selecting appropriate glass products tailored to specific environmental needs.

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The durability of the glass

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