Across
- 4. the visible portion of the electromagnetic spectrum
- 6. radiation emitted by bodies at room temperature
- 9. type of solar collector that consists of an absorber without the glass covering of a glazed flat-plate collector
- 10. low wavelength end of the spectrum
- 12. conversion process of solar energy into heat
- 13. Thermal radiation is continuously emitted by all matter whose temperature is above _____
- 14. emits the maximum amount of radiation by a surface at a given temperature
- 15. primary operating cost
Down
- 1. most common type of concentrating solar collector
- 2. part of solar radiation that reaches the Earth’s surface without being scattered or absorbed by the atmosphere
- 3. traps energy by allowing solar radiation to come in but not allowing infrared radiation to go out
- 5. Mirrors that reflect solar radiation into a single receiver
- 7. Constitutes the largest number of solar projects globally
- 8. most common semiconducting material
- 11. supplies electricity to buildings or businesses