Predictive Application of Retrievable Waste Heat of the Cement Industrial Rotary Kiln on Solid Oxide Fuel Cells
Date Issued
2005
Date
2005
Author(s)
Yang, Kai-Yuan
DOI
en-US
Abstract
When meeting the shortage of fossil fuels and the coming era of hydrogen energy, fuel cell energy emerged to be a promising technology in energy utilization in the future.
Developed to work at 800 to 1,000 degree Celsiusand and up to 15 atm (tested by Ontario Hydro Technology), solid oxide fuel cells (SOFCs) can generate the maximum power output among all types of fuel cells. However, when operating the SOFCs, great amount of fossil fuel is actually consumed in order to meet their high-temperature demand. High amount of secondary pollutants are expelled accordingly.
A possible brand new idea is thus proposed in this paper—a state-of-the-art tubular SOFC (TSOFC) can be installed either in the three dimensional heat flow field inside the cement industrial rotary kiln incinerator (RKI, located in Kaohsiung, Taiwan) or within its refractory layer where high temperature environment sustains around the clock when operating for the cement production. In this paper, simulation of the heat flow field and species remained after combustion in this kiln incinerator is achieved with the help of modern computer aided engineering (CAE) tool.
Suitable manipulating regions are to be found and predicted via the commercially available CFD code FLUENT. Parameter of excess air values are the primary variable, the detailed interior heat flow field and the heat transfer model in the kiln shell are the secondary variables for evaluating the installation of SOFCs into rotary kilns.
Before going on this study, kinetic parameters are parametrically varied and finite volume method (FVM) is introduced to solve the heat flow field and the visualization of the three dimensional flame structure is performed. Meanwhile, simulation of temperature results is compared with on-site field experiments and the installation possibilities of the SOFC on the rotary kiln incinerator can be reasonably predicted and assured
Subjects
廢熱回收
固態氧化燃料電池(SOFC)
旋轉窯 (RKI)
電腦輔助工程(CAE)
計算流體力學 (CFD)
FLUENT
有限體積法 (FVM)
waste heat management
solid oxide fuel cell (SOFC)
rotary kiln incinerator (RKI)
computer-aided engineering (CAE)
computational fluid dynamics (CFD)
finite volume method (FVM)
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-94-R91631029-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):cb24aec4e3d1ecd219e23a915261da02