Thermal Conductivity and Insulation Quiz
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Questions and Answers

What is the unit of measurement for thermal conductivity (u)?

  • W/m°C
  • W/m²°C (correct)
  • J/s
  • The formula for calculating heat flow (Q) is Q = uA + ΔT.

    False (B)

    What is the concept of 'energy neutral' and give an example?

    An energy neutral system produces the same amount of energy it consumes over a year. Solar panels are an example of an energy neutral system.

    A ______ wall is an example of insulation, consisting of two walls with insulation in between.

    <p>cavity</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Insulation Material = A measure of how easily heat flows through a material. Heat Flow (Q) = The amount of heat flowing away per second. Thermal Conductivity (u) = Materials that resist heat flow. Area (A) = The surface area through which heat flows. Temperature Difference (ΔT) = The difference in temperature between the two sides of the material.</p> Signup and view all the answers

    Flashcards

    Insulation Material

    Materials like clothes, double glass windows, and cavity walls that slow heat transfer.

    Heat Flow (Q)

    The amount of heat transferring per second, measured in Joules per second (J/s).

    Thermal Conductivity (u)

    A measure of how easily heat flows through a material, expressed in W/m²°C.

    Temperature Difference (ΔT)

    The difference in temperature between two sides of insulation, measured in °C.

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    Energy Neutral

    A system that produces the same amount of energy it uses over a year, e.g., solar panels.

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