Mechanical Engineering Science

Process and Component Analysis on S-CO2 Cooling Wall in the Coal-fired Boiler Power System

FANYuanhong, YANGDanlei, TANGGuihua, LIXiaolong

Abstract


The supercritical carbon dioxide (S-CO2 ) cooling wall in coal-fired boiler suffers from severe fragile crisis due to the high temperature of S-CO2 . The analysis of both heat transfer at process scale and cooling wall arrangement at component scale were carried out in present work. At the process scale, the difference in heat transfer performance between the smooth tube and the rifled tube were identified, especially the location of maximum outer wall temperature of cooling wall. The 1-D mathematical model for thermal-hydraulic analysis of S-CO2 furnace cooling wall tubes was then developed. At the component scale, the coupled model of combustion and S-CO2 heat transfer is employed for studying the thermal-hydraulic performance of rifled-spiral (R-S) and smooth-spiral (S-S) cooling wall arrangements. The maximum outer wall temperature of R-S cooling wall is 16.38℃ lower while the pressure drop increases by 2.33 times compared with the S-S cooling wall. Considering the pressure drop penalty on cycle efficiency of S-CO2 boiler power system, the R-S cooling wall is not recommended, while the S-S cooling wall should be carefully arranged in S-CO2 boilers.

Keywords


thermal fragile; heat transfer; correlation; cooling wall arrangement; spiral

Full Text:

PDF

References


Wang K, Li MJ, Zhang ZD, Min CH, Li P. Evaluation of

alternative eutectic salt as heat transfer fluid for solar

power tower coupling a supercritical CO2 Brayton cycle

from the viewpoint of system-level analysis. J Clean Prod

;279:123472. https://doi.org/10.1016/j.jclepro.2020.123472.

Mecheri M, Le Moullec Y. Supercritical CO2 Brayton cycles

for coal-fired power plants. Energy 2016;103:758–71.

https://doi.org/10.1016/j.energy.2016.02.111.

Fan YH, Tang GH. Numerical investigation on heat transfer

of supercritical carbon dioxide in a vertical tube under

circumferentially non-uniform heating. Appl Therm Eng

aMechanical Engineering Science  Vol. 3  No.2  2021 41

;138:354–64.

https://doi.org/10.1016/j.applthermaleng.2018.04.060.

Le Moullec Y. Conceptual study of a high efficiency

coal-fired power plant with CO2 capture using a

supercritical CO2 Brayton cycle. Energy 2013;49:32–46.

https://doi.org/10.1016/j.energy.2012.10.022.

Xu J, Sun E, Li M, Liu H, Zhu B. Key issues and solution

strategies for supercritical carbon dioxide coal fired power

plant. Energy 2018;157:227–46.

https://doi.org/10.1016/j.energy.2018.05.162.

Liu C, Xu J, Li M, Wang Z, Xu Z, Xie J. Scale law of sCO2 coal

fired power plants regarding system performance

dependent on power capacities. Energy Convers Manag

;226:113505.

https://doi.org/10.1016/j.enconman.2020.113505.

Zhou J, Zhu M, Xu K, Su S, Tang Y, Hu S, et al. Key issues and

innovative double-tangential circular boiler configurations

for the 1000 MW coal-fired supercritical carbon dioxide

power plant. Energy 2020;199:117474.

https://doi.org/10.1016/j.energy.2020.117474.

Zhou J, Xiang J, Su S, Hu S, Wang Y, Xu K, et al. Key issues

and practical design for cooling wall of supercritical carbon

dioxide coal-fired boiler. Energy 2019;186:115834.

https://doi.org/10.1016/j.energy.2019.07.164.

Guo JQ, Li MJ, Xu JL, Yan JJ, Ma T. Energy, exergy and

economic (3E) evaluation and conceptual design of the

MW coal-fired power plants integrated with S-CO2

Brayton cycles. Energy Convers Manag 2020;211:112713.

https://doi.org/10.1016/j.enconman.2020.112713.

Tanimizu K, Sadr R. Experimental investigation of

buoyancy effects on convection heat transfer of

supercritical CO2 flow in a horizontal tube. Heat Mass

Transf Und Stoffuebertragung 2016;52:713–26.

https://doi.org/10.1007/s00231-015-1580-9.

Jiang PX, Zhang Y, Xu YJ, Shi RF. Experimental and

numerical investigation of convection heat transfer of CO2

at supercritical pressures in a vertical tube at low Reynolds

numbers. Int J Therm Sci 2008;47:998–1011.

https://doi.org/10.1016/j.ijthermalsci.2007.08.003.

Liao SM, Zhao TS. An experimental investigation of

convection heat transfer to supercritical carbon dioxide in

miniature tubes. Int J Heat Mass Transf 2002;45:5025–34.

Kim DE, Kim MH. Experimental investigation of heat

transfer in vertical upward and downward supercritical CO2

flow in a circular tube. Int J Heat Fluid Flow 2011;32:176–

https://doi.org/10.1016/j.ijheatfluidflow.2010.09.001.

Jiang PX, Xu YJ, Lv J, Shi RF, He S, Jackson JD. Experimental

investigation of convection heat transfer of CO2 at

super-critical pressures in vertical mini-tubes and in porous

media. Appl. Therm. Eng., vol. 24, 2004, p. 1255–70.

https://doi.org/10.1016/j.applthermaleng.2003.12.024.

Li ZH, Jiang PX, Zhao CR, Zhang Y. Experimental

investigation of convection heat transfer of CO2 at

supercritical pressures in a vertical circular tube. Exp Therm

Fluid Sci 2010;34:1162–71.

https://doi.org/10.1016/j.expthermflusci.2010.04.005.

Bae YY, Kim HY, Kang DJ. Forced and mixed convection

heat transfer to supercritical CO2 vertically flowing in a

uniformly-heated circular tube. Exp Therm Fluid Sci

;34:1295–308.

https://doi.org/10.1016/j.expthermflusci.2010.06.001.

Gupta S, Saltanov E, Mokry SJ, Pioro I, Trevani L,

McGillivray D. Developing empirical heat-transfer

correlations for supercritical CO 2 flowing in vertical bare

tubes. Nucl Eng Des 2013;261:116–31.

https://doi.org/10.1016/j.nucengdes.2013.02.048.

Li Z, Lu J, Tang G, Liu Q, Wu Y. Effects of rib geometries and

property variations on heat transfer to supercritical water

in internally ribbed tubes. Appl Therm Eng 2015;78:303–14.

https://doi.org/10.1016/j.applthermaleng.2014.12.067.

Shen Z, Yang D, Mao K, Long J, Wang S. Heat transfer

characteristics of water flowing in a vertical upward rifled

tube with low mass flux. Exp Therm Fluid Sci 2016;70:341–

https://doi.org/10.1016/j.expthermflusci.2015.09.021.

Li Z, Wu Y, Tang G, Zhang D, Lu J. Comparison between

heat transfer to supercritical water in a smooth tube and in

an internally ribbed tube. Int J Heat Mass Transf

;84:529–41.

https://doi.org/10.1016/j.ijheatmasstransfer.2015.01.047.

Li Z, Tang G, Wu Y, Zhai Y, Xu J, Wang H, et al. Improved gas

heaters for supercritical CO2 Rankine cycles: Considerations

on forced and mixed convection heat transfer

enhancement. Appl Energy 2016;178:126–41.

https://doi.org/10.1016/j.apenergy.2016.06.018.

Gu J, Zhang Y, Wu Y, Li Z, Tang G, Wang Q, et al. Numerical

study of flow and heat transfer of supercritical water in

rifled tubes heated by one side. Appl Therm Eng

;142:610–21.

https://doi.org/10.1016/j.applthermaleng.2018.07.017.

Yang D, Pan J, Zhou CQ, Zhu X, Bi Q, Chen T. Experimental

investigation on heat transfer and frictional characteristics

of vertical upward rifled tube in supercritical CFB boiler.

Exp Therm Fluid Sci 2011;35:291–300.

https://doi.org/10.1016/j.expthermflusci.2010.09.011.

Yang Y, Bai W, Wang Y, Zhang Y, Li H, Yao M, et al. Coupled

simulation of the combustion and fluid heating of a 300

MW supercritical CO2 boiler. Appl Therm Eng

;113:259–67.

https://doi.org/10.1016/j.applthermaleng.2016.11.043.

Yang DL, Tang GH, Fan YH, Li XL, Wang SQ. Arrangement

and three-dimensional analysis of cooling wall in 1000 MW

S–CO2

coal-fired boiler. Energy 2020;197:117168.

https://doi.org/10.1016/j.energy.2020.117168.

Fan YH, Yang DL, Tang GH, Sheng Q, Li XL. Design of S–CO2

coal-fired power system based on the multiscale analysis

platform. Energy 2021;240:122482.

https://doi.org/10.1016/J.ENERGY.2021.122482.

Duda P, Taler J. A new method for identification of thermal

boundary conditions in water-wall tubes of boiler furnaces.

Int J Heat Mass Transf 2009;52:1517–24.

https://doi.org/10.1016/j.ijheatmasstransfer.2008.08.013.

E.W. Lemmon, M.L. Huber, M.O. McLinden. Reference fluid

thermodynamic and transport properties (REFPROP) 2007.

Kline N, Feuerstein F, Tavoularis S. Onset of heat transfer

deterioration in vertical pipe flows of CO2 at supercritical

pressures. Int J Heat Mass Transf 2018;118:1056–68.

https://doi.org/10.1016/j.ijheatmasstransfer.2017.11.039.

Sun E, Xu J, Li M, et al. Connected-top-bottom-cycle to cascade

utilize flue gas heat for supercritical carbon dioxide coal fired

power plant. Energy Convers Manag 2018;172:138–54.

https://doi.org/10.1016/j.enconman.2018.07.017.




DOI: https://doi.org/10.33142/mes.v3i2.6727

Refbacks

  • There are currently no refbacks.


Copyright (c) 2021 Yuanhong FAN, Danlei YANG, Guihua TANG, Xiaolong LI

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.