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Development of gas turbine inlet air cooling and waste heat recovery system.

Author(s) : ZHOU S. J., WANG J., HUANG G. H., et al.

Summary

The combustion turbine is a constant-volume power machine. When the ambient temperature is high, the density and the mass flow of inlet air are reduced, and then the power output and the relative efficiency of the combustion turbine are decreased. If the economy and the technology are reasonable, the inlet air cooling system should be equipped in combustion turbine, which runs at higher ambient temperature. A new type of the inlet air cooling and waste heat recovery system used in gas-steam turbine combined cycle (GSCC) was developed. When the ambient temperature is higher than 15°C, the saturation vapour produced by the low-pressure evaporator installed in the caudal flue of the waste heat boiler of GSCC drives a single-effect lithium bromide absorption chiller, the cooled water is sent to the air coolers for the inlet air cooling, and the gas turbine output power can be increased. When the ambient temperature is lower than 10°C, the vapour produced by the low pressure evaporator is supplied to the low pressure heater for the condensed water heating which comes from the deaerator and is sent to waste heat boiler, the higher output power of waste heat boiler and steam turbine can be achieved. So the waste heat of exhaust can be recovered all the year round. This system has been successfully tested and validated for one year. The working principle is presented in detail. The economic analysis and running characteristics are summarily discussed.

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Pages: ICR07-E2-173

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Details

  • Original title: Development of gas turbine inlet air cooling and waste heat recovery system.
  • Record ID : 2008-0203
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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