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The performance of ...
The performance of a loop seal in a CFB boiler
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- Johansson, A. (author)
- Högskolan i Borås,University of Borås,Chalmers tekniska högskola,Chalmers University of Technology
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- Johnsson, Filip, 1960 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Andersson, Bengt, 1947 (author)
- Valmet Oyj,Högskolan i Borås,University of Borås
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(creator_code:org_t)
- 2006-01-31
- 2006
- English.
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In: Journal of Energy Resources Technology, Transactions of the ASME. - : ASME International. - 1528-8994 .- 0195-0738. ; 128:2, s. 135-141
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Abstract
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- High in-bed heat transfer and low corrosive environment imply that the loop seal of a circulating fluidized bed (CFB) boiler is an advantageous location for superheaters. In order to increase the knowledge on the flow pattern and the heat transfer distribution to the tubes within a loop seal, measurements were performed in the loop seal of a 30 MW CFB boiler as well as in a 1/3 scaled-down seal operated according to simplified scaling laws. The scale model measurements show that the solids recirculation flux can be maintained with a substantial decrease of the fluidization flow in the seal compared to that currently used at full load conditions. It was also possible to significantly decrease the fraction of the bottom of the seal that was fluidized without affecting the solids flux through the seal. A gradient in the solids flow were detected in the vertical direction.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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