Design of a compact combustor-heat exchanger
Tutor / director / evaluatorSundén, Bengt
Document typeMaster thesis (pre-Bologna period)
Rights accessRestricted access - confidentiality agreement
An innovative combustion chamber for an Externally Fired Gas Turbine is studied in this thesis. It integrates a radiant burner together with a high temperature heat exchanger which provides the cycle with a higher Turbine Inlet Temperature and thus a higher efficiency. A design for relatively ease of construction is presented considering both manufacturing aspects and available materials in the market. It consists on a flat radiant burner which radiates heat to a number of tubes placed longitudinally which, in turn heat up by convection the working fluid in the cycle (air). The optimal size and distribution of tubes around the burner and the use of a ceramic foam within them to enhance the convective heat transfer are studied. Finally, a shell and tube heat exchanger is proposed as a possibility to recover the heat from the high temperature flue gases while reducing their temperature to an acceptable level for a gas turbine standard recuperator.
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