Study of effects of saline air on combustion performance in a gas turbine

Yei-Chin Chao, Yau Wei Huang

Research output: Contribution to journalArticlepeer-review

Abstract

As most of the power plants in Taiwan are very close to the sea, the high humidity and saline content in air may affect the combustion performance of the gas turbine and cause high temperature corrosion to the turbine blades. The saline air may affect combustion efficiency, combustion instability and pollution formation due to the reaction of the metal ion of the saline content in the flame. The combustion measurement results clearly show that the saline content in air will change the color of the flame due to the famous D-radiation of Sodium, lower the peak flame and the combustor exit temperatures, reduce the combustion efficiency, decrease NOx and increase CO and SOx pollution emissions and enhance combustion instability in the flame and in the gas turbine combustor. The presence of Na metal ions in the flame may enhance reaction due to its catalytic effect that significantly increases the high temperature flame zone in the midstream region of the jet flame. However, the reduction of OH radicals due to Na chemistry may strongly affect the oxidation of CO to CO2 leading to lower flame temperature and combustion efficiency with lower NOx and higher CO emissions.

Original languageEnglish
Pages (from-to)199-205
Number of pages7
JournalTransactions of the Aeronautical and Astronautical Society of the Republic of China
Volume31
Issue number3
Publication statusPublished - 1999 Sep

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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