.BuildingSystems.Technologies.ThermalStorages.FluidStorage

Information

This is a model for a thermal fluid storage

Typical use and important parameters

nEle number of layers, enumeration starts at bottom (bottom layer is no. 1)

Options

The thermal fluid storage model has several fluidports. 2 at the bottom and 2 at the top. It is possible to have different configurations:

• Switch on fluidports connected to each of the intermediate fluid layers.
• 2 optional and freely placeable internal heat exchangers (identified as "1" and "2").
• Specify the layer at which the HX are connected.
• Set PerfectlyIsolated to true to switch off the heat losses to the environment, i.e. the thermal fluid storage is perfectly isolated.
  Note that if PerfectlyIsolated is set to false and no boundary condition is connected to the heatPort, the external heat flow rate will also be 0. However, because all layers are connected to the external heat port, a non-physical internal heat flow transfer between volumes takes place.

Notes

The thermal fluid storage uses a model to increase heat exchange betweeen layers accounting for buoyancy effect, see BuoyancyModels

Assumption and limitations

Up to date the model does not take into account the mixing caused by in and outflows and there is no model for a stratified inlet.

Contents

Revisions

• August 18, 2018, by Christoph Nytsch-Geusen:
  Adapted to possible different media for the storage content and the two internal heat exchangers.
• May 23, 2015 by Carles Ribas Tugores:
  First implementation.