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Numerical prediction of gas pulsation in a scroll compressor using 1-D modeling: a validation study based on AHRI standard 530-2011.

Numéro : 1418

Auteurs : RAMALINGAM S., AMICO A. d , STRAND M., RUTAN M., RAMCHANDRAN G.

Résumé

Compressors are one of the core components in HVAC units in which efficiency and sound/vibration performance are imperative for optimal functionality. One of the factors that can impact both efficiency and sound/vibration performance of the compressor is gas pulsation. In a scroll compressor, the gas pulsation typically originates at the final scroll pocket, where the compressed gas discharges downstream. Along the flow path, the pulsation can be amplified or attenuated by various parameters such as boundary conditions, geometry changes, etc. This paper depicts a numerical model that predicts the discharge pulse of a scroll compressor. Commercially available software GT-SUITE was used to develop a 1-D model of the scroll compressor subassembly which includes scrolls and gas flow path components. AHRI Standard 530-2011 Rating of Sound and Vibration for Positive Displacement Refrigerant Compressors was used to verify the GT-SUITE model. The standard focuses on determining gas pulsation by spatially distributing pressure transducers along the discharge line. The standard emphasizes having an anechoic termination, with no variation in inside diameter or sharp bends in the discharge line. Emerson has developed a discharge pulse measurement procedure, in line with AHRI 530-2011, that is used to validate the GT-SUITE model. Since correlation with measurement data has been demonstrated, the GT-SUITE model is now used as the primary tool to determine the discharge pulse of scroll compressors, thereby reducing measurement time. Additionally, the model can be used to predict the discharge pulse across the compressor operating map and perform design optimization of the compressor and downstream flow path components.

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Pages : 9 p.

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Détails

  • Titre original : Numerical prediction of gas pulsation in a scroll compressor using 1-D modeling: a validation study based on AHRI standard 530-2011.
  • Identifiant de la fiche : 30030321
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Date d'édition : 15/07/2022
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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