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Comparison of two object-oriented modeling environments for the dynamic simulations of a residential heat pump.

Number: pap. 2552

Author(s) : BHANOT V., DHUMANE R., PETAGNA P., et al.

Summary

Object-oriented physical-modeling platforms offer a productive way of performing dynamic simulations of thermofluid systems. They simplify component development and code reuse and abstract away the complexities of sorting the resultant equations. In this study, we compare two platforms of this type: Dymola and EcosimPro. We use these platforms to conduct a realistic exercise of modeling and simulating a relatively complex residential heat pump in both heating and cooling modes and comparing the results against measured data. The heat pump used for measurements is a 3-ton residential R-410A unit. The parameters compared are the refrigerant pressures and temperatures, the compressor power consumption, the indoor unit air-side capacity and the heat exchanger air outlet temperatures. The two platforms prove to be similarly capable in predicting the performance of the heat pump, with deviations in accumulated capacities and power consumption being within 20% of measured values. Some differences are caused by fact that the Dymola model uses REFPROP-based curve fits for evaluation of fluid properties, while EcoSimPro uses a lookup table for faster evaluation and avoids zero mass flow cases by providing a small artificial mass flow rate in off-cycles. Implications of these assumptions and improvements on simulation speed are discussed.

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Pages: 10

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Details

  • Original title: Comparison of two object-oriented modeling environments for the dynamic simulations of a residential heat pump.
  • Record ID : 30024644
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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