Talk:Compact linear Fresnel reflector

Merging this into "Fresnel reflector"

I will probably merge this into a new article on Fresnel reflectors if no one has objections. Lumenos (talk) 20:56, 13 August 2009 (UTC)[reply]

I think the best place to discuss this would be there not here. Lumenos (talk) 21:00, 13 August 2009 (UTC)[reply]

Questions and Comments on Content

There are a couple of points in this article which I find confusing.

First of all, what is a "thermal fluid"? I am familiar with the concepts of heat exchangers but I don't recognize this term and there doesn't seem to be an article on it.

Secondly, I don't understand the statement in the Design|Reflectors section about "perpendicular incidence." What does this refer to? An Angle of Incidence of 90 degrees doesn't seem to make sense, because this would put the rays parallel to the mirrors' surfaces (unless I'm mistaken?). Putting the mirrors perpendicular to the rays also seems counter-intuitive and contradicts the pictures on this page.

Finally, the advantages of using Fresnel reflectors are very vague. Even with an understanding of apertures and focal lengths, I don't see what advantages this implies when compared with more conventional systems. NiteSite (talk) 19:52, 7 April 2010 (UTC)[reply]

Also, in the Design|Absorbers section, I'm not sure I understand intuitively how a close proximity of the panels reduce the length of the absorber lines. Does this simply mean that you need less length to collect the same amount of energy since more mirrors are focused on it? —Preceding unsigned comment added by NiteSite (talk • contribs) 20:09, 7 April 2010 (UTC)[reply]

The line: "... enough solar collectors to provide 200 MW of power per month." does not make sense. Was the "per month" a copy-paste accident? — Preceding unsigned comment added by 98.171.190.17 (talk) 04:34, 22 October 2013 (UTC)[reply]

Response to Questions and Comments

Dear Nitesite,

Thank you for your interest in improving this article. To answer your questions, when I used the term "thermal fluid" I was refering to a hot oil that carries large amounts of heat energy throughout the system. It's primary function is as a vessel. I have since realized that a better term would be "heat transfer fluid", so I have changed the article to reflect this.

I have also changed the word "perpendicular" to "appropriate" to render the phrase "appropriate angle of incidence" if you have any other suggestions you feel would benefit the article more than this word choice, feel free to make any edits you see fit.

With the state of technology today, there is little advantage to using Fresnel reflectors in solar collection, especially with the advent of thin film parabolic reflectors, a cheaper, more effective alternative. A few years ago, it was difficult and expensive to make parabolic reflectors using sagged glass. It was in response to this technology that Fresnel reflectors found their niche in innovation and were heralded for their performance.

Finally, you were correct in your assessment of how proximity enhances performance. When multiple reflectors are focused on the same pipe, one no longer requires longer pipe to achieve the same heat transfer capabilities.

Thanks again for your help! —Preceding unsigned comment added by Jrkenneyjr (talk • contribs) 03:44, 7 May 2010 (UTC)[reply]

Title and text not manual of style conformant

Compact linear Fresnel reflector and linear Fresnel reflector are not proper nouns so linear and reflector should not be capitalized in the title and only Fresnel should be capitalized the text. The acronyms should remain all caps. Unless there is disagreement I will fix this. Joja lozzo 01:29, 16 May 2011 (UTC)[reply]

External links modified (January 2018)

Hello fellow Wikipedians,

I have just modified one external link on Compact linear Fresnel reflector. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

Added archive https://web.archive.org/web/20110430021102/http://solarfire.org/Solar-Fire-P32 to http://www.solarfire.org/Solar-Fire-P32

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 19:37, 29 January 2018 (UTC)[reply]

Domestic Solar Fresnel reflectors

The article focuses on generating high temperatures which can be used in industrial settings.

An interesting alternative is to help heat rooms in buildings that are usually in the shade. Eg North facing rooms in the Northern hemisphere.

The concentration required is modest, otherwise there would be serious safety issues. Considering a non fresnel reflector for simplicity of description, the shape of the reflector could be saddle shaped. The convex direction could be vertical and the concave horizontal. This would allow a mirror to only need occasional seasonal changes to follow the sun’s changing zenith through the year. The Arrangement would mean the mirror would not require changing during the day. Some light would fall in the walls near the window which is the primary place for the solar energy and light to focus on.

This arrangement could provide significant, cheap daylighting and energy in many scenarios.

Have there been any demonstration projects aling these lines?

The use of fresnel reflectors based on this saddle shape, designed for easy cleaning could make this quite an attractive feature if thoughtfully positioned. CuriousMarkE (talk) 13:33, 27 October 2024 (UTC)[reply]