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Development of a physics-inspired model for the characterization of vapor injected compressors.

Number: 1290

Author(s) : KHAN A., BRADSHAW C. R.

Summary

This paper presents a new physics-inspired model to represent vapor-injected compressors. The developed model was inspired from the polytropic nature of compression processes. The resulting model is a pressure ratio-based model using suction, injection, and discharge pressures to predict evaporator mass flow rate, injection mass ratio, compressor power, and discharge temperature. To evaluate the model’s predictive capabilities, a dataset containing 4, in-house, combinations of compressors with different refrigerants and 3 datasets collected from the literature were used. The deviation from experimental results for the evaporator mass flow rate, and input compressor power were lower than 5% Mean Absolute Percentage Error (MAPE) in all cases of interpolation, with the exception of few extrapolation cases. The deviation from experimental results for the discharge temperature was lower than 3K Mean Absolute Error (MAE) in all cases.

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Pages: 10

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  • Original title: Development of a physics-inspired model for the characterization of vapor injected compressors.
  • Record ID : 30033596
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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