Integrated Building Systems Quiz
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Questions and Answers

Which one of these is the correct definition of U-value?

  • The thermal resistance of a material.
  • The ability of a material to reflect heat.
  • The rate of transfer of heat through a material through the 3 modes of heat transfer. (correct)
  • The combination of emissivity and reflectivity of a material.

    • Which one of these is the correct definition of R-value?

  • The ability of a material to reflect heat.
  • The thermal resistance of a material. (correct)
  • The rate of transfer of heat through a material through the 3 modes of heat transfer.
  • The combination of emissivity and reflectivity of a material.

    • What is the formula for calculating R-value?

  • R-value = 1 - U-value
  • R-value = U-value + 1
  • R-value = 1/U-value (correct)
  • R-value = U-value

    • What is the formula for calculating U-value?

    <p>U-value = 1/R-value</p> Signup and view all the answers

    What is the formula for calculating thermal resistance (R)?

    <p>R = 1/thickness of the material</p> Signup and view all the answers

    What is the formula for calculating thermal conductivity (k)?

    <p>k = 1/thermal resistance</p> Signup and view all the answers

    What is the main use of R-value?

    <p>To measure the thermal resistance of a material.</p> Signup and view all the answers

    What is the main use of U-value?

    <p>To calculate the rate of transfer of heat through a material.</p> Signup and view all the answers

    What is the Solar Reflectance Index (SRI) used to indicate?

    <p>The ability of a material to reflect heat.</p> Signup and view all the answers

    What is Fourier's Law of Conduction used to describe?

    <p>The rate of transfer of heat through a material.</p> Signup and view all the answers

    Which of the following statements accurately describes sensible energy?

    <p>Sensible energy is the energy received that raises the temperature of the substance.</p> Signup and view all the answers

    Which of the following statements accurately describes latent energy?

    <p>Latent energy is the energy received that changes the phase of the substance.</p> Signup and view all the answers

    What is the key takeaway about phase change?

    <p>Phase change occurs when a substance gains or loses enough sensible energy to reach the phase change point and then gains or loses enough latent energy to change its phase.</p> Signup and view all the answers

    What is the sum of sensible and latent energy called?

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

    When does phase change occur?

    <p>When a substance gains or loses enough sensible energy to reach the phase change point and then gains or loses enough latent energy to change its phase.</p> Signup and view all the answers

    What is the role of sensible energy in phase change?

    <p>Sensible energy raises the temperature of the substance.</p> Signup and view all the answers

    What is the role of latent energy in phase change?

    <p>Latent energy changes the phase of the substance.</p> Signup and view all the answers

    What happens to the temperature of a substance during phase change?

    <p>The temperature remains constant.</p> Signup and view all the answers

    What is the term for the energy received that raises the temperature of a substance?

    <p>Sensible energy</p> Signup and view all the answers

    What is the term for the energy received that the substance uses to change phase?

    <p>Latent energy</p> Signup and view all the answers

    Which of the following is true about the U-value of windows?

    <p>The U-value measures how well a window resists heat</p> Signup and view all the answers

    What does SHGC stand for when referring to windows?

    <p>Solar Heat Gain Coefficient</p> Signup and view all the answers

    What is the purpose of shading devices for windows?

    <p>To reduce heat gain in hot climates</p> Signup and view all the answers

    What is the Adjusted SHGC of a window calculated from?

    <p>SHGC and SEF</p> Signup and view all the answers

    What does VLT stand for when referring to windows?

    <p>Visible Light Transmission</p> Signup and view all the answers

    What are the three properties used to select windows?

    <p>U-Value, SHGC, and VT</p> Signup and view all the answers

    What is a thermal bridge?

    <p>A path of least resistance for heat flow</p> Signup and view all the answers

    What are the three phases of water?

    <p>Solid, Liquid, Gas</p> Signup and view all the answers

    What occurs when water changes phases?

    <p>Freezing, Melting, Evaporation</p> Signup and view all the answers

    At what temperature and pressure does water exhibit a flat region on the Temperature-Energy Curve?

    <p>100 C (212 F) and 1 atm pressure</p> Signup and view all the answers

    Which one of these is the correct definition of Enthalpy?

    <p>The sum of Sensible and Latent Energy</p> Signup and view all the answers

    What is the key takeaway about phase change?

    <p>Phase change occurs when a substance gains or loses enough sensible energy to reach the phase change point</p> Signup and view all the answers

    What is the role of sensible energy in phase change?

    <p>Sensible energy is the energy received that raises the temperature of a substance</p> Signup and view all the answers

    What is the role of latent energy in phase change?

    <p>Latent energy is the energy received that the substance uses to change phase</p> Signup and view all the answers

    When does phase change occur?

    <p>When a substance gains or loses enough energy to change its phase</p> Signup and view all the answers

    What occurs when water changes phases?

    <p>Water gains or loses latent energy</p> Signup and view all the answers

    What is the term for the energy received that the substance uses to change phase?

    <p>Latent energy</p> Signup and view all the answers

    What is the term for the energy received that raises the temperature of a substance?

    <p>Sensible energy</p> Signup and view all the answers

    What is the sum of Sensible and Latent Energy called?

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

    What are the three phases of water?

    <p>Solid, Liquid, Gas</p> Signup and view all the answers

    Which one of the following is the correct formula for calculating U-value?

    <p>U-value = R-value/thickness</p> Signup and view all the answers

    What is the formula for calculating thermal resistance (R)?

    <p>R = 1/U-value</p> Signup and view all the answers

    Which one of the following statements accurately describes sensible energy?

    <p>Sensible energy is the energy received that raises the temperature of a substance.</p> Signup and view all the answers

    What is the role of latent energy in phase change?

    <p>Latent energy is the energy received that the substance uses to change phase.</p> Signup and view all the answers

    What is the main use of U-value?

    <p>To measure the rate of transfer of heat through a material</p> Signup and view all the answers

    What is the main use of R-value?

    <p>To calculate U-value</p> Signup and view all the answers

    What is the correct definition of U-value?

    <p>U-value is the rate of transfer of heat through a material through the 3 modes of heat transfer.</p> Signup and view all the answers

    What is the correct definition of R-value?

    <p>R-value is the thermal resistance = 1/U-value.</p> Signup and view all the answers

    Which property of a window indicates the amount of visible light transmitted?

    <p>Visual Light Transmission (VLT)</p> Signup and view all the answers

    What is the formula for calculating the Adjusted SHGC of a window?

    <p>Adjusted SHGC = SHGC / SEF</p> Signup and view all the answers

    What is the main use of the U-value of windows?

    <p>To indicate the flow of non-solar heat or heat due to temperature difference</p> Signup and view all the answers

    What is the formula for calculating the R-value of a material?

    <p>R = Rse + R1 + R2 + R3 + R4 + Rsi</p> Signup and view all the answers

    What is the main use of the Solar Heat Gain Coefficient (SHGC) of windows?

    <p>To indicate the amount of solar heat gain entering the space through a window</p> Signup and view all the answers

    What is the formula for calculating the Total Heat Gain of a window?

    <p>Total Heat Gain = SHGC x Solar Radiation Energy</p> Signup and view all the answers

    What is the main use of the Window Wall Ratio (WWR)?

    <p>To indicate the ratio of window area to wall area</p> Signup and view all the answers

    Which property of a window indicates the flow of non-solar heat or heat due to temperature difference?

    <p>U-Value</p> Signup and view all the answers

    What is the formula for calculating the Solar Heat Gain Coefficient (SHGC) of a window?

    <p>SHGC = Total Heat Gain / Solar Radiation Energy</p> Signup and view all the answers

    What is the main use of the Visual Light Transmission (VLT) of windows?

    <p>To indicate the amount of visible light transmitted</p> Signup and view all the answers

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