Evacuated Tube Solar Collectors
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Questions and Answers

What is the function of a flat plate collector in solar energy systems?

  • To track the movement of the sun for maximum energy absorption
  • To cool down the solar radiation for low-temperature applications
  • To concentrate and focus solar radiation to increase radiation flux
  • To convert solar energy into heat energy using the greenhouse effect (correct)
  • Which type of solar collector is most suitable for high-temperature applications?

  • Parabolic trough collector (correct)
  • Compound parabolic collector
  • Flat plate collector
  • Evacuated tube collector
  • What is a distinguishing feature of compound parabolic collectors compared to flat plate collectors?

  • They have the same area for intercepting solar radiation
  • They use concave reflecting surfaces to focus solar radiation (correct)
  • They are fixed and do not track the sun
  • They convert solar energy using the greenhouse effect
  • Which type of solar collector includes a mechanism for suntracking?

    <p>Parabolic trough collector</p> Signup and view all the answers

    In which type of solar collector does the radiation flux increase by focusing the sun’s beam to a smaller receiving area?

    <p>Compound parabolic collector</p> Signup and view all the answers

    Which solar collector design is commonly used for water and air heating in agricultural and domestic applications?

    <p>Flat plate collector</p> Signup and view all the answers

    What is the optimum tilt angle for flat plate solar collectors at a location with latitude 30°?

    <p>30°</p> Signup and view all the answers

    Which type of solar collector can accept incoming radiation over a wide range of angles due to multiple internal reflections?

    <p>Compound parabolic collectors</p> Signup and view all the answers

    Why are parallel serpentine designs preferred in flat plate collectors over serpentine designs?

    <p>Higher temperature rise</p> Signup and view all the answers

    What is the key feature of evacuated tube collectors compared to flat plate collectors?

    <p>Transparent glass tubes connected to a header pipe</p> Signup and view all the answers

    Which type of solar collectors should be oriented towards the equator facing south in the Northern Hemisphere and north in the Southern Hemisphere?

    <p>Flat plate collectors</p> Signup and view all the answers

    What is the advantage of compound parabolic collectors over parabolic trough collectors?

    <p>Can accept incoming radiation over a wide range of angles</p> Signup and view all the answers

    Which type of solar collectors are cylindrical in shape and perform well even when sunlight is low?

    <p>Evacuated tube collectors</p> Signup and view all the answers

    Which type of solar collectors are considered to be the most efficient of all collector systems?

    <p>Parabolic dish collectors</p> Signup and view all the answers

    Which type of solar collectors use mirrors that track the sun throughout the day?

    <p>Heliostat field collectors</p> Signup and view all the answers

    Which type of solar collectors are particularly useful in areas with cold, cloudy wintry weathers?

    <p>Evacuated tube collectors</p> Signup and view all the answers

    Which type of solar collectors consist of a field of individually controlled mirrors reflecting sunlight onto a central receiver?

    <p>Heliostat field collectors</p> Signup and view all the answers

    Which type of solar collectors are known for always pointing to the sun?

    <p>Heliostat field collectors</p> Signup and view all the answers

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