.AixLib.Obsolete.YearIndependent.FastHVAC.Components.Storage.BaseClasses.HeatTransferQbuoyTimer

Information

Overview

Model for heat transfer between buffer storage layers. Models conductance of water. Buoyancy and conduction are considered individually. Similar to HeatTransferQbuoy but extended by a fixed time period in which a check is performerd if a buoyancy layers exists.

Sources

Equations and parameters for calculating the buoyancy heatflow are empirically and derived by CFD simulations. The buoyancy is split up into three parts: Freebuoy, Botmix, Topmix.

• Freebuoy: Desribes the heatflow which is transfered directly by the upflowing mass to the overlying layers.
• Botmix and Topmix: Describes the heat that is transfered due to the mixing of the layers above and below the buoyancy layer that is induced by the upflowing mass

Model was developed by Christian Grozescu in his master thesis Extension of Thermal Storage Models for Energy System Simulations, 2017

Revisions

• October 19, 2017  David Jansen:
  Added informations and commentations to source code and changed names according to AixLib regulations
• March , 2017  Christian Grozescu :
  Developed model