Heat transfer analysis for a multistage gas turbine using different blade-cooling schemes

被引：29

作者：

Albeirutty, MH

Alghamdi, AS

Najjar, YS

机构：

[1] King Abdulaziz Univ, Dept Mech Engn, Jeddah 21589, Saudi Arabia

[2] Jordan Univ Sci & Technol, Dept Mech Engn, Irbid 22110, Jordan

来源：

APPLIED THERMAL ENGINEERING | 2004年 / 24卷 / 04期

关键词：

gas turbine; blade cooling; heat transfer; combined system;

D O I：

10.1016/j.applthermaleng.2003.10.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat transfer analysis of gas turbine blades using air or steam as coolants is investigated under various operating conditions. A general model of the combined system is developed and is used to compare the performance of three main schemes of the blade cooling, namely air-cooling, open-circuit steam cooling (OCSC) and closed-loop steam cooling (CLSC). The heat transfer model permitted the calculations of the cooling mass ratio that is required to reach a certain blade temperature. The results showed that steam appears to be a potential cooling medium, when employed in an open-circuit or in a closed-loop scheme. The combined system with CLSC gives better overall performance than does air-cooling or the OCSC. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：563 / 577

页数：15

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