Design and Analysis of a Single-Stage Transonic Centrifugal Turbine for organic Rankine cycle(ORC) |
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| Authors: | WANG Naian SUN Xiaojin HUANG Diangui |
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| Affiliation: | School of Energy and Power Engineering, University of Shanghai for Science and technology, Shanghai 200093, China;School of Energy and Power Engineering, University of Shanghai for Science and technology, Shanghai 200093, China;School of Energy and Power Engineering, University of Shanghai for Science and technology, Shanghai 200093, China |
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| Abstract: | The recovery of low temperature heat sources is a hot topic in the world. The ORC system can effectively use the low temperature heat source. As its main output device, the performance of the turbine is very important. The single stage transonic turbine has the characteristics of small size and large output power. In this paper, the complete design process of a transonic centrifugal turbine with R245 fa in low working temperature condition is introduced. At the design conditions, the shaft power and the wheel efficiency of the centrifugal turbine can reach 1.12 MW and 83.61%, respectively. In addition, a thermodynamic ORC cycle is presented and the off-design conditions of the turbine and its influence on the system are studied in detail. The results obtained in the present work show that the single-stage transonic centrifugal turbine can be regarded as a potential choice to be applied in small scale ORC systems. |
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| Keywords: | ORC transonic centrifugal turbine design and off-design operating conditions performance analysis computational fluid dynamics |
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