Effect of ambient temperature on gas turbine performance?

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Rossie Lueilwitz asked a question: Effect of ambient temperature on gas turbine performance?
Asked By: Rossie Lueilwitz
Date created: Mon, Mar 29, 2021 6:54 PM
Date updated: Wed, Jun 22, 2022 12:30 PM

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  • Power output decreases due to less mass flowing through the turbine. Ambient temperature also has an affect on the compressor. Colder air improves compressor efficiency. This means the compressor consumes less power, leading to more power supplied to the generator. Figure 1 - Effect of ambient temperature on gas turbine performance.

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performance of a 23.7 MW gas turbine plant operated at ambient temperature of 30 to 45oC. The net power output is improved by 11 percent when the gas turbine engine is supplied with cold air at the inlet. At the ambient temperature of 30oC the net power output increases by 11 percent at ISO-rated condition, accompanied by a 2 percent

ambient temperature on several gas turbine performance analysis parameters (Taniguchi and Miyamae, 2000). The maximum influence of T amb on PW out is clearly evident from the figure, while heat rate (HR) and exhaust gas temperature (EGT) tend to increase significantly with T amb. (Rahman, Ibrahim, Taib, Noor, Kadirgama, and Bakar, 2011;

A gas turbine performance is affected by anything that changes the density and or mass flow of the air intake to the compressor. The air density is a function of ambient temperature, pressure and humidity. This paper examines effect of change of ambient temperature on the performance of a gas turbine operating in cogeneration plant.

Another important result is the ambient temperature sensitivity of the gas turbines having different design parameters. Model 1 gas turbine has larger production loss and augmentation with ambient temperature in hot regions compared to model 2 turbine because they are much more sensitive to ambient temperature.

Health monitoring data, namely power output and exhaust gas temperature are used for performance analysis of an industrial gas turbine engine. Apart from ambient temperature, influences of fuel consumptions and compressor fouling on the engine performance are also considered in the work.

The purpose of the present study is to investigate the effect of the inlet air temperature on the performance of a micro gas turbine (MGT) with cogeneration system (CGS) arrangement. An analysis model of the MGT–CGS was set up on the basis of experimental results obtained in a previous study and a manufacturer standard data, and it was analysed under a various ambient temperature condition in a cold region.

The effect of ambient temperature on gas turbine efficiency and power is well noticed, however the effect of humidity on the gas turbine efficiency and power proved to be difficult to quantify within the existing set-up and instrumentation capabilities.

It is well known that a performance of large-scale gas turbine is greatly affected by its inlet air temperature. However, the effect of the inlet air temperature on the performance of small-scale gas turbine (micro gas turbine) is not widely reported.

When it gets hot the opposite effect occurs. Power output decreases due to less mass flowing through the turbine. Ambient temperature also has an affect on the compressor. Colder air improves compressor efficiency. This means the compressor consumes less power, leading to more power supplied to the generator. Figure 1 - Effect of ambient temperature on gas turbine performance.

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