Thermodynamic models and energy distribution of single-phase heated surface in a boiler under unsteady conditions

doi:10.1007/s11708-010-0117-7

Front Energ

2011, Vol. 5

Issue (1) : 69-74 https://doi.org/10.1007/s11708-010-0117-7

RESEARCH ARTICLE

Thermodynamic models and energy distribution of single-phase heated surface in a boiler under unsteady conditions

Xiyan GUO, Yongping YANG(

)

Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education of China, North China Electric Power University, Beijing 102206, China

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Abstract

A coal-fired power unit frequently operates under unsteady conditions; thus, in order to acquire scientific energy analysis of the unit, thermodynamic analysis of a single-phase heated surface in a boiler under such conditions requires investigation. Processes are analyzed, and distributions of energy and exergy are qualitatively revealed. Models for energy analysis, entropy analysis, and exergy analysis of control volumes and irreversible heat transfer processes are established. Taking the low-temperature superheater of a 610 t/h-boiler as an example, the distribution of energy, entropy production, and exergy is depicted quantitatively, and the results are analyzed.

Keywords thermodynamic model energy distribution boiler unsteady conditions

Corresponding Author(s): YANG Yongping,Email:yyp@ncepu.edu.cn

Issue Date: 05 March 2011

Cite this article:

Xiyan GUO,Yongping YANG. Thermodynamic models and energy distribution of single-phase heated surface in a boiler under unsteady conditions[J]. Front Energ, 2011, 5(1): 69-74.

URL:

https://academic.hep.com.cn/fie/EN/10.1007/s11708-010-0117-7
https://academic.hep.com.cn/fie/EN/Y2011/V5/I1/69

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