Performance of humid air turbine with exhaust gas expanded to below ambient pressure based on microturbine

被引：20

作者：

Wan, Kuifang ^{[1
,2
]}

Zhang, Shijie ^{[1
]}

Wang, Jing ^{[1
,2
]}

Xiao, Yunhan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Engn Thermophys, Key Lab Adv Energy & Power, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2010年 / 51卷 / 11期

关键词：

Humid air turbine; Inverted Brayton cycle; Microturbine; Performance; Optimization; INVERSE BRAYTON CYCLES; POWER-GENERATION; EFFICIENCY;

D O I：

10.1016/j.enconman.2010.03.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new type of HAT cycle comprising HAT and Inverted Brayton cycles, named BAHAT in this paper, is proposed to enhance the microturbine's performance. By adding an exhaust compressor after flue gas condenser, the gas expander expands to a pressure lower than ambient. Simulation and parameter optimization results show that the electricity efficiency and specific work of BAHAT are about 2 percentage points and 20% higher than that of HAT cycle respectively when turbine inlet temperature is 950 C. The working pressure of aftercooler, humidifier and turbine hot section is only about 0.4 MPa though the optimal total pressure ratio is about 9-10. The drops of compression work and outlet water temperature of humidifier are considered the main factors to enhance BAHAT's efficiency. In addition, the exhaust compressor inlet gas temperature affects BAHAT's efficiency and water recovery ratio apparently. It is also shown that it is easy to achieve water self-support for BAHAT, mixing makeup water to the water loop before entering economizer shows the best thermodynamic performance, and air leakage to the bottom cycle influences both efficiency and water recovery ratio of BAHAT. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2127 / 2133

页数：7

共 32 条

[1] AGHAEI VN, 2006, GT200690832 ASME
[2] Simulation of combined Brayton and inverse Brayton cycles
Agnew, B
Anderson, A
Potts, I
Frost, TH
Alabdoadaim, MA
[J]. APPLIED THERMAL ENGINEERING, 2003, 23 (08) : 953 - 963
[3] Performance analysis of combined Brayton and inverse Brayton cycles and developed configurations
Alabdoadaim, M. A.
Agnew, B.
Potts, I.
[J]. APPLIED THERMAL ENGINEERING, 2006, 26 (14-15) : 1448 - 1454
[4] [Anonymous], 2003, ASME, DOI DOI 10.1115/GT2003-38326
[5] [Anonymous], GT200851089 ASME
[6] [Anonymous], 2008, Catalog of CHP Technologies, Combined Heat and Power Partnership
[7] A study of humidified gas turbines for short-term realization in midsized power generation - Part II: Intercooled cycle analysis and final economic evaluation
Bartlett, MA
Westermark, MO
[J]. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2005, 127 (01): : 100 - 108
[8] A feasibility study of inverted brayton cycle for gas turbine repowering
Bianchi, M
di Montenegro, GN
Peretto, A
Spina, PR
[J]. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2005, 127 (03): : 599 - 605
[9] Cogenerative below ambient gas turbine (BAGT) performance with variable thermal power
Bianchi, M
di Montenegro, GN
Peretto, A
[J]. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2005, 127 (03): : 592 - 598
[10] Inverted Brayton cycle employment for low-temperature cogenerative applications
Bianchi, M
di Montenegro, GN
Peretto, A
[J]. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2002, 124 (03): : 561 - 565

← 1 2 3 4 →