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Air flow and thermal efficiency characteristics in solar chimneys and Trombe Walls [An article from: Energy & Buildings] | ![Air flow and thermal efficiency characteristics in solar chimneys and Trombe Walls [An article from: Energy & Buildings]](http://ecx.images-amazon.com/images/I/51VT8JXGF4L._SL160_.jpg) | Authors: S.A.M. Burek, A. Habeb Publisher: Elsevier Category: Book
Buy New: $10.95 as of 3/11/2010 05:21 CST details
Seller: Amazon.com Sales Rank: 4894990
Format: HTML Media: Digital
ASIN: B000PDSFAO
Publication Date: February 1, 2007 Availability: Available for download now
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Product Description This digital document is a journal article from Energy & Buildings, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description: This paper reports on an experimental investigation into heat transfer and mass flow in thermosyphoning air heaters, such as solar chimneys and Trombe Walls. The test rig comprised a vertical open-ended channel with closed sides, resembling a solar collector or solar chimney approximately 1m^2. Close control of the heat input was achieved by using an electrical heating mat-steady-state heat inputs ranged from 200 to 1000W, and the channel depth was varied between 20 and 110mm. Temperatures were recorded throughout the test rig, as was the air velocity. The principal results from the data showed:*The mass flow rate through the channel was a function of both the heat input and the channel depth:m@KQ"i^0^.^5^7^2andm@Ks^0^.^7^1^2 *The thermal efficiency of the system (as a solar collector) was a function of the heat input, and not dependent on the channel depth:@h@KQ"i^0^.^2^9^8 Correlations are given in dimensionless forms.
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