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Unsteady numerical simulation of scroll expander based on CFD.

Number: pap. 1696

Author(s) : PENG B., LI Y., ZHAO S.

Summary

As a key component of Organic Rankine Cycle system(ORC), the performance analysis of the scroll expander is critical for the whole system, and the force analysis of the orbiting scroll tooth plays an important role in the output performance of the expander. In this study, CFD based 3D unsteady flow numerical simulation is performed on scroll expander. The flow characteristics, mechanical properties and output torque and power under different speeds for the scroll expander are analyzed in detail. Local reconfiguration with dynamic mesh technology and working fluid R134a are used in the performance analysis. The analysis shows that the mass flow rate of inlet and outlet increases with the raise of shaft speed, the output torque of expander decreases with the raise of shaft speed, and the output power increases gradually. When the expander speed and outlet pressure are constant, the output torque and power increase with the increase of inlet pressure.

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Pages: 9

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Details

  • Original title: Unsteady numerical simulation of scroll expander based on CFD.
  • Record ID : 30024392
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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