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A comparison of transient heat pump cycle simulations with homogeneous and heterogeneous flow models.

Number: pap. 2593

Author(s) : LAUGHMAN C. R.

Summary

This paper compares the effects of two different refrigerant flow modeling assumptions on the transient performance of vapor-compression heat pump cycles. These simulations are developed in the Modelica modeling language, which uses an a causal, equation-oriented approach to describe physical systems. The effect of the flow assumptions and specific slip ratio correlations on both the equilibrium operating point and the transient behavior of the cycle are demonstrated through these simulations. It is shown that equivalent simulations with different slip ratio correlations each have different equilibrium mass inventories, and that some aspects of the transient system behavior exhibit differences between the representative simulations. The effect of the software implementation on the model performance is also discussed.

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Pages: 10 p.

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Details

  • Original title: A comparison of transient heat pump cycle simulations with homogeneous and heterogeneous flow models.
  • Record ID : 30013239
  • Languages: English
  • Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2014/07/14

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