Talk:Solar chimney

message: Cooltower article
The following ref is helpful:
Moody, C. D., T. L. Thompson, and J. F. Peck. 1978. The Downdraft Chimney:
Passive Evaporative Cooling for the Southwest. Tucson, AZ: Environmental
Research Laboratory, University of Arizona.
140.215.156.57 (talk) 16:36, 11 September 2010 (UTC)

message: I think that there is a danger to introduce Radon in the building when you are sucking air though an underground pipe, because it can always crack without knowing. I would only use geothermic air cooling if it was under pressure (pushing air from the entry instead of sucking it out from the exit).  —Preceding unsigned comment added by Jim777 (talk • contribs) 19:44, 21 July 2009 (UTC)
thread_title: Important to check out

message: If I made any mistakes or if you have a problem with anything I did, let me know and I will try to fix it. It's a very interesting article. I added it to the Solar power page, to their list of solar resources.  KarenAnn 21:30, 27 June 2006 (UTC)
replies: text: Thank you; looks good. I have one problem though with the sentence: "The surface area is more important than the diameter of the chimney the purpose of heating by solar radiation." I am not entirely sure how to fix that sentence "...for the purpose of..." "...for better heat exchange with the air..."; it is a bit convoluted. The idea that should come across is that a large surface area is good for heating the air inside the chimney; clearly, a large diameter round chimney would not do the job. JdH 10:36, 28 June 2006 (UTC)
replies: text: Modified sentence hopefully for the better. Please check it out. (I'm not clear about the concept being described.) Also, should it be "surfaces" instead of "surface"?  KarenAnn 11:18, 28 June 2006 (UTC)
replies: text: I just checked back and saw the vast improvements to this article, done recently by JdH & KarenAnn. Good work. --Singkong2005 (t - c - WPID) 14:59, 29 June 2006 (UTC)
thread_title:  I wikified and copy edited your article 

message: The following tag appeared on Image:Solar_chimney.JPG, that is the first image that is used in the article. I would appreciate it if someone would help out with that. JdH 15:55, 28 June 2006 (UTC)
thread_title: Replacement [[:Image:Solar_chimney.JPG|Image:Solar_chimney.JPG]]

message: You have vastly improved and clarify it. (Even I understand it now!)  KarenAnn 01:16, 5 July 2006 (UTC)
replies: text: Thank you :-) You have been very helpful. There are still a lot of issues which should be addressed. One of the things which I hope somebody will address is its application in less developed countries. There is a large scientific literature out there that adresses that. One of the things I came across while looking into this is the Windcatcher, which is a related traditional Persian architectural device; very interesting. JdH 01:49, 5 July 2006 (UTC)
replies: text: Thank you for your contribution to this article; it is very helpful.  Unfortunately, the description of the function of the Windcatcher is very murky indeed; I have tried to address that under the header How does this work? of the talk page.  Basically, what I believe is that the Windcatcher is in principle nothing else than a chimney. And like all chimneys (including the Solar chimney) it works by a difference in temperature: The temperature inside the chimney is higher than the temperature outside; it is this difference in temperature that causes a pressure difference, and hence an updraft inside the chimney. The Solar chimney seeks to enhance that natural ventilation process by using solar power to further increase the temperature inside the chimney. Clearly, the Windcatcher does not do that, it uses the pre-existing temperature differences instead. But apart from that particular aspect everything else remains the same.  Climate plays a role as well; from the discussion on the Talk page it became clear that in the high desert of central Iran the outside temperature falls significantly during the night; so during the night the Windcatcher will help to draw cool outside air into the building. In the end, the Windcatcher is a device to improve ventilation, taking advantage of the local climatological circumstances. JdH 05:27, 20 October 2006 (UTC)
thread_title:  Your page looks great 

message: It seems to me that a solar chimney and a thermal chimney aren't just two names for the same thing.  A thermal chimney might not be designed for solar gain, or might even be designed to avoid solar gain.  In this case, it would only assist convection when the inside temperature was higher than the outside temperature, whereas a solar chimney could drive convection even if the inside temperature is cooler than outside, with sufficient solar gain in the chimney.  In climates that are cool at night and hot during the day, it can be good to have more ventilation at night than during the day.  A simple solar chimney does the opposite, bringing in the most outside air when it is warmest outside.  Thermal mass in the chimney, combined with a damper to shut down the convection during the heat of the day, can be used to shift the solar chimney effect to the night, but with a low-solar-gain thermal chimney, you get convection at the right time automatically, passively.  
Maybe there should be a separate "thermal chimney" article.  Ccrrccrr (talk) 12:52, 1 August 2008 (UTC)
replies: text: As mentioned, incoming air may pre-cooled by leading it through underground ducts before it is allowed to enter the building, in order to provide cooling even when it is hot outside. Also, the article already mentions the possibility of integrating the solar chimney with a Trombe wall; that would provide the thermal mass needed to shift ventilation to the night. In addition, you may want to cap the chimney to create a Venturi effect, to create an updraft whenever a breeze is present. Combine all this low-tech with one high-tech gadget, i.e.: a thermostat-controlled damper, and you are in business :-) JdH (talk) 17:31, 13 August 2008 (UTC)
thread_title:  Solar vs. Thermal 

message: This section looks more like an outline of a project plan than an encyclopedic article. "The Building Research Establishment (BRE) office building in Garston, incorporates solar assisted passive ventilation stacks as part of its ventilation strategy."
What is this 'Building Research Establishment'? Where is this 'Garston'? Who is the architect mentioned here? Modallist (talk) 15:04, 28 December 2010 (UTC)
thread_title:  Precedent Study: The Environmental Building 

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