Exergy assessment of air film blade cooled combined power cycle plant

被引：8

作者：

Tara Chand, Vadlamudi ^{[1
,2
]}

Ravindra, Kommineni ^{[2
]}

Bala Prasad, Katuru ^{[2
]}

机构：

[1] Acharya Nagarjuna Univ, Univ Coll Engn & Technol, Dept Mech Engn, Guntur, Andhra Pradesh, India

[2] RVR&JC Coll Engn, Dept Mech Engn, Guntur, Andhra Pradesh, India

来源：

INTERNATIONAL JOURNAL OF AMBIENT ENERGY | 2020年 / 41卷 / 09期

关键词：

Blade cooling; combined cycle power plant; heat recovery steam generator; exergy efficiency; irreversibility; carbon dioxide emissions; GAS-TURBINE; PERFORMANCE ANALYSIS; PART; EFFICIENCY; ENERGY; HRSG;

D O I：

10.1080/01430750.2018.1501740

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The present work aims at the comparative assessment of specific fuel consumption (SFC) and carbon dioxide (CO2) emissions of combined power cycle plant (CPCP) with and without gas turbine blade cooling. The open loop air film cooling has been employed to cool the turbine blades. In this work, the irreversibility of components ofCPCPis estimated. The effect of gas turbine inlet temperature (GTIT) and compressor pressure ratio (CPR) on exergy efficiency and mass flow rate of the coolant are evaluated. The coolant flow requirement was 0.03579 kg/kg of gas. The exergy efficiency was decreased by 0.3%, SFC andCO2emissions were increased by 0.4% and 0.3% respectively (GTIT = 1473 K, CPR = 12) for cooled gas turbine basedCPCP when compared with un-cooled one. Since the increment inSFCandCO2emissions were marginal, it is recommended to use open loop air film cooling forCPCPto ensure a longer life of blades.

引用

页码：994 / 1006

页数：13