Fig. 1.1 shows a double-glazed window with a U-value of 2.8 W m-2 K-1. The window has an area of 2.5 m2. What is the rate of energy transfer through the win...
Question 1 Report
Fig. 1.1 shows a double-glazed window with a U-value of 2.8 W m-2 K-1. The window has an area of 2.5 m2.
What is the rate of energy transfer through the window?
Answer Details
The rate of energy transfer through a building element is:
\[ \text{rate} = U \times A \times \Delta T = 2.8 \times 2.5 \times (22 - 2) = 2.8 \times 2.5 \times 20 = 140 \text{ W} \]
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