Solar Energy Without Solar Cells?

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Discussion Overview

The discussion centers around the potential of a new method for harnessing solar energy without traditional solar cells, as referenced in an article. Participants explore the implications of this technology, including its efficiency and feasibility at varying intensities.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants express interest in the potential of the new solar energy method, suggesting it could significantly reduce costs associated with solar power generation.
  • Others question whether the technology can operate effectively at lower intensities, highlighting concerns about the extremely high energy requirements mentioned in the article.
  • A participant notes the theoretical limits of solar concentration ratios and emphasizes the discrepancy between these limits and the requirements stated for the new device.

Areas of Agreement / Disagreement

Participants generally agree on the potential benefits of the technology but express differing views on its feasibility and the practicality of achieving lower intensity requirements. The discussion remains unresolved regarding the viability of the proposed method.

Contextual Notes

There are limitations regarding the assumptions made about material requirements and the theoretical limits of solar concentration, which are not fully explored in the discussion.

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Thats pretty interesting. Hopefully they find a way to do this with a lower intensity.
 
If its true, I think it has tremendous potential.
 
Sure. Looks like it could greatly reduce the cost of generate solar power. We'll have to wait and see though. :-p
 
Can it be made work at lower intensities? The maximum possible concentration ratio for sunlight is < 50 000 times (for a cell immersed in a medium of refractive index = 1). For a direct normal irradiance of 1000 W/m^2, this gives a maximum solar flux on the cell of 50 million W/m^2. According to the article such a device would require 10 million W/cm^2 = 100 billion W/m^2. This is 2000 times higher than the theoretical limit, so I hope they can find some materials requiring a lower intensity.
 

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