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Experimental characterization of flow field around heat exchanger cells in a residential gas furnace.

Number: pap. 2433

Author(s) : WU P., SHANG W., CHEN J.

Summary

For a long time, the optimization of the design of a residential gas furnace heavily relies on CFD-based design tool. In this study, Particle Image Velocimetry (PIV) is applied to measure the flow field around heat exchanger cells in a general model of a residential gas furnace to provide benchmark validation of CFD validations. The gas furnace, combined with inlet and outlet duct and a large exhaust chamber, can simulate a set of realistic operational conditions with seeded particles circulated inside. It is discovered that strong circulation exists around the top of the cells due to flow separation. Vortex shedding from two curved end plates is also observed. The result also shows that, by changing the inlet settings, the flow field between cells may transit from symmetric to asymmetric. The detailed flow structures will help optimize the deployment of key components that was practiced before in a trial and error approach.

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Pages: 14

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Details

  • Original title: Experimental characterization of flow field around heat exchanger cells in a residential gas furnace.
  • Record ID : 30024547
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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