Pyrheliometer and Pyranometer
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Questions and Answers

What is the percentage of helium in the Sun's mass?

  • 30%
  • 25% (correct)
  • 20%
  • 35%

What is the term for the amount of solar radiation reaching the Earth?

  • Diffuse Radiation
  • Solar Constant
  • Insolation (correct)
  • Global Radiation

What is the value of the Solar Constant (Isc) in kW?

  • 1.253 kW
  • 1.553 kW
  • 1.453 kW
  • 1.353 kW (correct)

What is the instrument used for measuring direct solar radiation and diffuse solar radiation?

<p>Sunshine Recorder (B)</p> Signup and view all the answers

What is the unit of measurement for the total solar radiation received on the Earth's surface?

<p>W/m² (D)</p> Signup and view all the answers

What is the temperature range of a flat plate collector?

<p>40°C to 100°C (C)</p> Signup and view all the answers

What is the thickness of the absorber plate in a flat plate collector?

<p>1 to 2 mm (A)</p> Signup and view all the answers

What is the purpose of insulation in a flat plate collector?

<p>To reduce heat loss (D)</p> Signup and view all the answers

What is the diameter of the tube in a flat plate collector?

<p>1 to 1.5 cm (A)</p> Signup and view all the answers

What is the advantage of a flat plate collector over other types of collectors?

<p>It uses both beam and diffused radiation (D)</p> Signup and view all the answers

What is the efficiency of a flat plate collector?

<p>30 to 50% (C)</p> Signup and view all the answers

What is the typical operating temperature range of a Flat Plate Collector?

<p>Around 200 to 300°C (A)</p> Signup and view all the answers

What is an advantage of a Flat Plate Collector system?

<p>It is a relatively cheap and low-maintenance system. (A)</p> Signup and view all the answers

What is a limitation of a Flat Plate Collector system?

<p>The rate of distillation is usually very slow. (B)</p> Signup and view all the answers

What is a potential environmental concern with a Flat Plate Collector system?

<p>The distillation process waste stream can be a potential source of environmental pollution. (D)</p> Signup and view all the answers

What is a characteristic of a Flat Plate Collector system?

<p>There are no moving parts. (C)</p> Signup and view all the answers

What is a benefit of a Flat Plate Collector system in relation to climate change?

<p>There are climate change adaptation and mitigation benefits. (C)</p> Signup and view all the answers

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