.Buildings.Fluid.Storage.Ice.BaseClasses.QStar

Information

This block calculates the normalized heat transfer rate q* between the chilled water and the ice in the thermal storage tank using

q^* Δt = C₁ + C₂x + C₃ x² + [C₄ + C₅x + C₆ x²]ΔT_lmtd^*

where Δt is the time step of the data samples used for the curve fitting, C_1-6 are the curve fit coefficients, x is the fraction of charging, also known as the state-of-charge, and T_lmtd^* is the normalized LMTD calculated using Buildings.Fluid.Storage.Ice.BaseClasses.calculateLMTDStar.

Revisions

• January 26, 2022, by Michael Wetter:
  Refactored model to new architecture.
• December 8, 2021, by Yangyang Fu:
  First implementation.