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Trigeneration: Thermodynamic performance and cold expander aerodynamic design in humid air turbines

In English

Författare

Summary, in English

Improving electrical efficiency has been proposed as the most convenient means of reducing, e.g. CO<sub>2</sub> emission from power plants. Increasing fuel utilization through combined heat and power generation is another useful measure for emission reduction. Trigeneration technology for the production of heat, power and cooling is an interesting alternative for further improvement of fuel utilization. Previous studies at The Department of Heat and Power Engineering in Lund. Sweden, have shown that wet cycles are the best candidates, with a high potential to achieve fuel utilization higher than 100%, based on the fuel's lower heating value [1, 2, 8]. Apart from high fuel utilization, trigeneration technology can produce cooling without the use of harmful cooling agents. The basic principle of trigeneration is to interrupt the expansion at an elevated pressure level and extract heat from the working medium. The final expansion then takes place at low temperature admission levels resulting in a very low temperature at the turbine exhaust. In this paper results from both thermodynamic analysis of the humid air turbine concept in conjunction with trigeneration. and the expander design criterion required for realization of the last section of the expander are presented. The thermodynamic study gives the boundary conditions for the cold turbine design. Optimum conditions for the inlet to the cold expander are a pressure of 2 to 3 bar and a temperature of 47

Avdelning/ar

Publiceringsår

2003

Språk

Engelska

Sidor

1-8

Publikation/Tidskrift/Serie

American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI

Volym

6 A

Dokumenttyp

Konferensbidrag

Förlag

American Society Of Mechanical Engineers (ASME)

Ämne

  • Energy Engineering

Nyckelord

  • Electrical efficiency
  • Trigeneration technology
  • Fuel utilization

Conference name

2003 ASME Turbo Expo

Conference date

2003-06-16 - 2003-06-19

Conference place

Atlanta, GA, United States

Status

Published