1 / 4

What is the optimal size for a solar absorber?

What is the optimal size for a solar absorber?. Stephen Evans Samuel Seager Me 340 Dr. Vladimir Solovjov. The component of direct radiation. Xcosø = W m /2 X = W m /(2cosø) Qdir = AE a q” = W m L/2cosø(E a q dir ”). The component of diffused radiation. tan(θ/2) = (W a /2)/d

menora
Download Presentation

What is the optimal size for a solar absorber?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. What is the optimal size for a solar absorber? Stephen Evans Samuel Seager Me 340 Dr. Vladimir Solovjov

  2. The component of direct radiation • Xcosø = Wm/2 • X = Wm/(2cosø) • Qdir = AEa q” = WmL/2cosø(Eaqdir”)

  3. The component of diffused radiation • tan(θ/2) = (Wa/2)/d • θ/2 = arctan(Wa/2d) • θ = 2arctan(Wa/2d) • Percentage of diffused radiation is: η • η = angle of projected/total projected = θ/Π = (2/Π) arctan (Wa/2d) • Qdiff = Aηqdiff = (WmL2/Π)arctan (Wa/2d)

  4. Net energy from radiation • Q = [(WmL/2cosθ)(Eaqdir”) + (2WmL/Π) arctan (Wa/2d)]n - Ea r(Ta4 – T∞4)WaL • Plot with varying Wm to find qmax • Conclusion: The ideal width for the solar collector absorber should be in the range of 40 to 60 inches depending on its surface temperature.

More Related