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Design and part-load behavior of a receiver for a solar-heated gas turbine with a parabolic dish collector

Conference · · Am. Soc. Mech. Eng., (Pap.); (United States)
OSTI ID:6431081
The present paper deals with the conversion of solar energy in a gas turbine plant with a parabolic dish collector. Particular consideration is devoted to the thermodynamic and mechanical design and partload behavior of the receiver. The incident sunlight is focussed by the parabolic dish and then beamed into the cavity receiver. Here the working medium of the gas turbine flows through tubes and is heated up to the receiver outlet temperature. The task of the receiver is to transfer the radiated energy as efficiently as possible to the working medium. Furthermore the required heating surface should be small as possible i.e. optimum use must be made of the tube material with respect to its state of stress. It is shown which geometric and thermodynamic plant parameters influence these two design criteria. An optimum receiver design is presented on the basis of the results thus obtained. Finally, the variations in receiver efficiency and tube stressing when the gas turbine runs at constant speed or constant turbine inlet temperature, are investigated.
Research Organization:
Institute for Turbomachinery, University of Hannover, Hannover
OSTI ID:
6431081
Report Number(s):
CONF-840611-
Conference Information:
Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 84-GT-254
Country of Publication:
United States
Language:
English