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Questions and Answers
Which material did the researchers replace the graphite solar absorber with in their current experiment?
Which material did the researchers replace the graphite solar absorber with in their current experiment?
- Aluminum
- Metal and ceramic composite (correct)
- Copper
- Stainless steel
What was the purpose of the perforations in the two layers of the solar absorber?
What was the purpose of the perforations in the two layers of the solar absorber?
- To allow water to seep through (correct)
- To allow sunlight to pass through
- To allow air to circulate
- To allow the layers to be easily separated
What problem did the researchers face with their initial solar absorber design?
What problem did the researchers face with their initial solar absorber design?
- The device did not float on water
- The layers were not perforated
- The energy in the sunlight radiated away (correct)
- The water did not reach the graphite layer
What additional devices were needed to boil water using the initial solar absorber?
What additional devices were needed to boil water using the initial solar absorber?
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What property of the metal and ceramic composite material used in the current experiment helps in solar absorption?
What property of the metal and ceramic composite material used in the current experiment helps in solar absorption?
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Study Notes
Solar Absorber Design
- Researchers replaced graphite with a metal and ceramic composite material in their current experiment.
- Perforations in the two layers of the solar absorber allow for efficient water boiling.
Initial Design Challenges
- The initial solar absorber design faced a problem: it couldn't boil water directly.
- Additional devices were required to boil water using the initial solar absorber.
Metal and Ceramic Composite Material
- The metal and ceramic composite material's high thermal conductivity helps in efficient solar absorption.
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