Author
Listed:
- Zhang, Feichi
- Heidarifatasmi, Hosein
- Harth, Stefan
- Zirwes, Thorsten
- Wang, Robert
- Fedoryk, Michal
- Sebbar, Nadia
- Habisreuther, Peter
- Trimis, Dimosthenis
- Bockhorn, Henning
Abstract
A burner system for the efficient and clean combustion of sulfur is introduced, which serves as a key component in a novel solar power cycle using sulfur as chemical storage medium of solar energy. In order to validate the proposed design concept, highly-resolved numerical simulations have been performed. The current setup is operated with a thermal load of 20 kW or power density of 5 MW/m3. Two nozzle configurations with different swirl intensities (SI) of the airflow are studied. A large inner recirculation zone is observed for the nozzle with a high SI (HSI), which leads to a strong radial dispersion of the sulfur spray and a broad, short flame in the combustion chamber; although this HSI design is beneficial from the viewpoint of flame stabilization, it causes a large number of sulfur droplets hitting the chamber wall. In contrast, the nozzle design with a low SI (LSI) yields a narrow spray and a long jet flame, with much less droplets hitting the wall. The HSI nozzle shows an overall higher flame temperature compared with the LSI nozzle, which is confirmed to be caused by burning at a higher local fuel equivalence ratio. This is attributed to the strong inner recirculation flow generated by the high swirl intensity, which results in an enhanced evaporation and mixing of sulfur droplets with air. In terms of operability and NOx emission, the LSI burner is preferred due to less sulfur droplets hitting the chamber wall and the lower flame temperature.
Suggested Citation
Zhang, Feichi & Heidarifatasmi, Hosein & Harth, Stefan & Zirwes, Thorsten & Wang, Robert & Fedoryk, Michal & Sebbar, Nadia & Habisreuther, Peter & Trimis, Dimosthenis & Bockhorn, Henning, 2020.
"Numerical evaluation of a novel double-concentric swirl burner for sulfur combustion,"
Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
Handle:
RePEc:eee:rensus:v:133:y:2020:i:c:s1364032120305463
DOI: 10.1016/j.rser.2020.110257
Download full text from publisher
As the access to this document is restricted, you may want to
for a different version of it.
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:rensus:v:133:y:2020:i:c:s1364032120305463. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/wps/find/journaldescription.cws_home/600126/description#description .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.