Proceedings of the
5th International Seminar on
ORC Power Systems
9 - 11 September 2019, Athens Greece
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One Dimensional Design for Carbon Dioxide Axial Flow Turbine


Go-down orc2019 Tracking Number 42

Presentation:
Session: Session 2A: Turbines-Design aspects (2)
Room: Olympia
Session start: 14:00 Mon 09 Sep 2019

Ningjian Peng   pengnj_2014@163.com
Affifliation: PHD

Enhua Wang   wangenhua@bit.edu.cn
Affifliation: Correspending professor


Topics: - Turbines (Topics), - Oral Presentation (Preferred Presentation type)

Abstract:

Carbon dioxide power cycle has many advantages for future energy utilization. Turbine is a vital component in this system, and its efficiency has a great impact on system performance. In general, the efficiency of turbine expander is assumed to be a fixed value according to experience when analysing the performance of carbon dioxide power cycle. However, the thermodynamic properties of working fluid have a great influence on turbine efficiency, so design parameters are critical to ensure a high efficiency of carbon dioxide turbine. On the other hand, most of the carbon dioxide turbines for MW-class are radial turbines at present whereas axial turbines take advantages in terms of fluidity and simple structure compared with radial turbines. In this study, one dimensional design is carried out for a single-stage carbon dioxide axial-flow turbine by a mean-line design procedure, and geometric parameters of the flow passage and turbine efficiency are obtained. The results can provide a reference for the practical design of turbine expander of carbon dioxide power cycle system.