.AixLib.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.Frosting.LiangAndZhuCalibrated

Information

This model calibrates the growth velocities from Liang et al., who base their work on the zones from Zhu et al., onto dynamic frost densities and a custom build heat pump at the Institute for Energy Efficient Buildings and Indoor Climate.

The calibration was performed and used for Römer et al. In addition to Liang et al., a time-delay after the last defrost is used before the frost starts to grow again. This was added based observed data from dynamic tests and is grounded in the fact that fins are warm after defrost, and, thus, don't directly accumulate frost.

For more information, see the base-model: AixLib.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.Frosting.BaseClasses.PartialVelocityBased .

References

Römer, Fabian and Fuchs, Nico and Fuchs, Nico and Müller, Dirk, Practical, Near-Optimal Design Rule Extraction for Heat Pumps in Single-Family Buildings (September 03, 2025). Available at SSRN: https://ssrn.com/abstract=5633891

J.H. Zhu, Y.Y. Sun, W. Wang, S.M. Deng, Y.J. Ge, and L.T. Li. Developing a new frosting map to guide defrosting control for air-source heat pump units. Applied Thermal Engineering, November 2015 doi:10.1016/j.applthermaleng.2015.06.076.

Liang, S., Wang, W., Sun, Y., Li, Z., Zhao, J., Lin, Y., and Deng, S. (2020). A novel characteristic index for frosting suppression based on the configuration and operation of air source heat pumps. International Journal of Refrigeration, 109, 161-171. https://doi.org/10.1016/j.ijrefrig.2019.10.009.

Revisions

• December 22, 2025 by Fabian Roemer:
  First implementation (see issue AixLib #1623)