Compute Solar Reflection from Parabolic Trough | Hi Everyone

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Discussion Overview

The discussion revolves around computing the total reflected solar radiation from a parabolic trough aperture area to its focal point, given specific parameters such as the geometry of the trough, the reflectivity of the mirror, and the incident solar irradiation. The context includes theoretical and practical aspects relevant to solar energy concentration.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant inquires about the procedure to calculate radiation transfer from a parabolic mirror to its focal point, emphasizing the need for specific parameters like insolation and mirror reflection.
  • Another participant suggests looking up 'insolation', noting that it varies based on factors such as latitude, time of day, and altitude, which could be relevant to the inquiry.
  • The original poster expresses gratitude for the information on insolation but clarifies that they are seeking a calculation method rather than just data on incident solar radiation.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as the original poster's request for a specific calculation method remains unanswered, and the discussion includes varying levels of understanding regarding insolation and its application.

Contextual Notes

The discussion lacks a detailed mathematical framework or specific methodologies for computing the radiation transfer, which may limit the ability to derive a solution based on the provided information.

Who May Find This Useful

This discussion may be useful for individuals interested in solar energy systems, particularly those focusing on the design and analysis of parabolic trough concentrators.

Magnew
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Hi to everyone

I wonder if someone knows how can i compute the total reflected solar radiation from a parabolic trough aperture area to the focal point, if we know the geometry of the parabolic trough the reflector coefficiency of the mirror and the amount of solar irradiation that is incident on the concentrator in a direction parallel to the central plane of the parabola. I would appreciate very much if someone could help me because i need this information in order to complete an essay that I'm working on.

Relevant books, software or web sites are welcome.

Thanx everyone in advance
 
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Look up 'insolation'. It's the amount of solar radiation per unit area per unit time. It's a function of latitude, time of day, etc...even altitude. Try average insolation as well.
 
Last edited:
Thanx Phrak
I've already found a lot of things about the amount of incident solar radiation. What I am asking is a procedure to calculate the radiation transfer between a parabolic mirror and its focal point, if iknow the insolation and the reflection of the mirror.

Thank u
 
Anyone?
 

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