Second law analysis of supercritical CO2 recompression Brayton cycle

被引：275

作者：

Sarkar, Jahar ^{[1
]}

机构：

[1] Banaras Hindu Univ, Inst Technol, Dept Mech Engn, Varanasi 221005, Uttar Pradesh, India

来源：

ENERGY | 2009年 / 34卷 / 09期

关键词：

Nuclear reactor; S-CO2; cycle; Exergy analysis; Pressure ratio; Optimization; Irreversibility; Second law efficiency; EXERGY ANALYSIS; REACTOR; TEMPERATURE; ENERGY;

D O I：

10.1016/j.energy.2009.04.030

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In the present study, exergetic analyses and optimization of S-CO2 recompression cycle have been performed to study the effect of operating parameters on the optimum pressure ratio, energetic and exergetic efficiencies and component irreversibilities. Effect of isentropic efficiency, recuperator effectiveness and component pressure drop on the second law efficiency is presented as well. Results show that the effect of minimum operating temperature on the optimum pressure ratio and cycle efficiencies is more predominant than the maximum operating temperature, whereas the effect of maximum cycle pressure is significant only for lower values and the optimum pressure ratio leads to near critical minimum cycle pressure. Result shows that the irreversibilities of heat exchangers are significantly more compared to that of turbo-machineries and the effect of operating parameters on irreversibility is also more significant for recuperators compared to turbo-machines. Effect of isentropic efficiency of turbine is more predominant (about 2.5 times) than that of compressors and effect of high temperature recuperator (HTR) effectiveness is more predominant (about double) than that of low temperature recuperator (LTR) on the second law efficiency. Effect of pressure drop in reactor is more significant compared to others components on the second law efficiency reduction. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1172 / 1178

页数：7

共 18 条

[1]

Angelino G., 1969, 69GT103 ASME

[2]

Dostal, 2004, THESIS MIT US

[3]

DOSTAL V, 2002, MITANPTR09

[4] High-performance supercritical carbon dioxide cycle for next-generation nuclear reactors [J].

Dostal, Vaclav ;

Hejzlar, Pavel ;

Driscoll, Michael J. .

NUCLEAR TECHNOLOGY, 2006, 154 (03) :265-282

[5] The supercritical carbon dioxide power cycle: Comparison to other advanced power cycles [J].

Dostal, Vaclav ;

Hejzlar, Pavel ;

Driscoll, Michael J. .

NUCLEAR TECHNOLOGY, 2006, 154 (03) :283-301

[6] EXERGY ANALYSIS OF AN OPERATING BOILING-WATER-REACTOR NUCLEAR-POWER STATION [J].

DUNBAR, WR ;

MOODY, SD ;

LIOR, N .

ENERGY CONVERSION AND MANAGEMENT, 1995, 36 (03) :149-159

[7] Exergy analysis of a pressurized-water reactor nuclear-power plant [J].

Durmayaz, A ;

Yavuz, H .

APPLIED ENERGY, 2001, 69 (01) :39-57

[8]

FEHER EG, 1967, P IECEC FLOR

[9]

FIASCHI D, ENERGY IN PRESS, DOI DOI 10.1016/J.ENERGY.2008.12.013

[10] Study of steam, helium and supercritical CO2 turbine power generations in prototype fusion power reactor [J].

Ishiyama, Shintaro ;

Muto, Yasushi ;

Kato, Yasuyoshi ;

Nishio, Satoshi ;

Hayashi, Takumi ;

Nomoto, Yasunobu .

PROGRESS IN NUCLEAR ENERGY, 2008, 50 (2-6) :325-332

← 1 2 →