Comparative Evaluation for Selected Gas Turbine Cycles

IF 0.9 Q4 THERMODYNAMICS

International Journal of Thermodynamics Pub Date : 2023-09-26 DOI:10.5541/ijot.1268823

Mohamed ELWARDANY, Abd El-moneim M. NASSİB, Hany A. MOHAMED

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引用次数: 1

Abstract

The energy and exergy evaluation of simple gas turbine (SGT), gas turbine with air bottoming cycle (GT-ABC), and partial oxidation gas turbine (POGT) are studied. The governing equations for each cycle are solved using energy equation Solver (EES) software. The characteristics performance for selected cycles are discussed and verified with that obtained for available practical cycles (SGT, GT-ABC, POGT). The present results show a good agreement with the practical one. The effects of significant operational parameters, turbine inlet temperature (TIT), compression ratio (CR), and compressor inlet temperature (CIT), on the specific fuel consumption, energy and exergy efficiencies are discussed. According to the findings, a reduction in CIT and a rise in TIT and CR led to enhance energy and exergy efficiency for each configuration with different ranges. Results revealed that the GT-ABC and POGT cycles are more efficient than those of SGT at the same operational parameters. The energy and exergy efficiencies are 38.4%, 36.2% for SGT, 40%, 37.8 % for GT-ABC, and 41.6%, 39.3% for POGT. The POGT cycle has a better energy and exergy performance at a lower pressure ratio than the SGT and GT-ABC.

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选定燃气轮机循环的比较评价

对简单燃气轮机(SGT)、气底循环燃气轮机(GT-ABC)和部分氧化燃气轮机(POGT)的能量和火用评价进行了研究。利用能量方程求解器(EES)软件求解各循环的控制方程。讨论了所选循环的特性性能，并与可用的实际循环(SGT, GT-ABC, POGT)的特性性能进行了验证。所得结果与实际结果吻合较好。讨论了涡轮进口温度(TIT)、压缩比(CR)和压气机进口温度(CIT)等重要运行参数对比油耗、能量和火用效率的影响。根据研究结果，CIT的减少和TIT和CR的增加导致了不同范围内每种配置的能源和能源效率的提高。结果表明，在相同操作参数下，GT-ABC和POGT循环比SGT循环效率更高。SGT的能量和火用效率分别为38.4%、36.2%，GT-ABC为40%、37.8%，POGT为41.6%、39.3%。在较低压力比下，POGT循环比SGT和GT-ABC具有更好的能量和火用性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Thermodynamics THERMODYNAMICS-

CiteScore

1.50

自引率

12.50%

发文量

期刊介绍： The purpose and scope of the International Journal of Thermodynamics is · to provide a forum for the publication of original theoretical and applied work in the field of thermodynamics as it relates to systems, states, processes, and both non-equilibrium and equilibrium phenomena at all temporal and spatial scales. · to provide a multidisciplinary and international platform for the dissemination to academia and industry of both scientific and engineering contributions, which touch upon a broad class of disciplines that are foundationally linked to thermodynamics and the methods and analyses derived there from. · to assess how both the first and particularly the second laws of thermodynamics touch upon these disciplines. · to highlight innovative & pioneer research in the field of thermodynamics in the following subjects (but not limited to the following, novel research in new areas are strongly suggested): o Entropy in thermodynamics and information theory. o Thermodynamics in process intensification. o Biothermodynamics (topics such as self-organization far from equilibrium etc.) o Thermodynamics of nonadditive systems. o Nonequilibrium thermal complex systems. o Sustainable design and thermodynamics. o Engineering thermodynamics. o Energy.