Download - Solar Water Heaters
![Page 1: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/1.jpg)
Solar Water Heaters
![Page 2: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/2.jpg)
Objectives1. Define absorb, reflect, solar
collector2. Compare the effect of black and
white collectors in solar water heaters
3. Compare the temperature change in covered and uncovered solar heaters
![Page 3: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/3.jpg)
How can we catch the energy we receive from the Sun and put it to
work for us?
![Page 4: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/4.jpg)
Solar Collector
Any material or object placed in the sun to absorb solar energy for transfer to water or air
![Page 5: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/5.jpg)
• Absorb – to take up, soak in, or capture
• Reflect – to bounce back.
![Page 6: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/6.jpg)
![Page 7: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/7.jpg)
![Page 8: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/8.jpg)
Sunlight
![Page 9: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/9.jpg)
![Page 10: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/10.jpg)
reflected (bounce back)
absorbed ( soak in)
![Page 11: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/11.jpg)
• When light is absorbed, kinetic energy increases.
• When kinetic energy increases, temperature usually increases.
![Page 12: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/12.jpg)
![Page 13: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/13.jpg)
• How did the black collector make water hotter?
• Black containers absorb energy from the sun. As they absorb energy, they get hot.
![Page 14: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/14.jpg)
• How did the covered container make water hotter?
• A covered container keeps air from carrying heat away.
![Page 15: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/15.jpg)
• How did energy absorbed by black plastic heat the water?
• Energy absorbed by the black plastic transfers to the water by contact (conduction).
![Page 16: Solar Water Heaters](https://reader036.vdocument.in/reader036/viewer/2022062501/568168d0550346895ddfbf1e/html5/thumbnails/16.jpg)
• What is the best design for a solar water heater?
• It should be black to absorb the sun’s energy, contain water that is in contact with the collector, and have a cover to keep air from cooling the water.