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Mechanistic chamber models: A review of geometry, mass flow and heat transfer sub-models.

Number: 1180

Author(s) : TANVEER M. M., BRADSHAW C. R., DING X., ZIVIANI D.

Summary

The evolution of computer resources paved the way for numerical models to substitute extensive experimental campaigns to develop and optimize compressors for the HVAC&R industry. A particular class of compressor models referred to as mechanistic (or deterministic) chamber model is well-known to be computationally efficient and has reasonable model fidelity for performance prediction and extrapolation. The overall model architecture requires inputs from various sub-models, including the mass flow model, heat transfer model, valve model and mechanical loss model. The accuracy of the comprehensive model depends on the fidelity of the individual sub-models. This article provides a comprehensive review of the different approaches available in literature which were used to model the geometry, mass flow, valves, and heat transfer processes in the compressor. The article aims to help researchers identify suitable approaches for their analysis. Additionally, it was found that there are opportunities for additional research to develop analytical correlations for discharge coefficients for mass flow model, effective flow/force area for valve model, instantaneous heat transfer coefficients and thermal conductance for multi-lumped network models.

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Pages: 12 p.

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Details

  • Original title: Mechanistic chamber models: A review of geometry, mass flow and heat transfer sub-models.
  • Record ID : 30030271
  • Languages: French
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Publication date: 2022/07/15

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