modelPB2Air_Constant
PB2Air - constant alpha
Extends from TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.HeatTransfer.PackedBedToAir.HeatTransferBasePB2Air (Partial heat transfer model for packed Bed 2 Air heat transfer).
Information
1. Purpose of model
Constant Heat Transfer for verification purpose
2. Level of detail, physical effects considered, and physical insight
(Description)
3. Limits of validity
(Description)
4. Interfaces
(none)
5. Nomenclature
(no elements)
6. Governing Equations
(no equations)
7. Remarks for Usage
(none)
8. Validation
(no validation or testing necessary)
9. References
(none)
10. Version History
Model created by Michael von der Heyde (heyde@tuhh.de) for the FES research project, March 2021
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| String | gas (from HeatTransferBasePB2Air) | "true" | |
| Boolean | useHomotopy (from HeatTransferBasePB2Air) | ||
| SI.Length | lx_const | if inlet then geo.max_height[1]/2 else geo.max_height[iCom.N_cv]/2 | Constant Penetration length |
| Integer | N_cv_eff | integer(ceil(x_rel*iCom.N_cv)) | Number of effected cells |
| Integer | N_cv_den | integer(N_cv_eff*(N_cv_eff + 1)/2) | denumerator for partition function |
| Real[iCom.N_cv] | weight | if inlet then cat(1, {(N_cv_eff + 1 - i)/(N_cv_den) for i in 1:N_cv_eff}, {0 for i in N_cv_eff + 1:iCom.N_cv}) else cat(1, {0 for i in 1:iCom.N_cv - N_cv_eff}, {(i - (iCom.N_cv - N_cv_eff))/(N_cv_den) for i in iCom.N_cv - N_cv_eff + 1:iCom.N_cv}) | Weights for each cell |
| Internals | |||
| Boolean | inlet (from HeatTransferBasePB2Air) | true | |
| Heat Transfer | |||
| SI.CoefficientOfHeatTransfer | alpha_const | 10 | Constant heat transfer coefficient |
| Real | x_rel | min(0.25, lx_const/geo.length) | Penetration length of heat flux in relation to storage length, limited to 0.25 |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.Basics.Interfaces.HeatPort_a[iCom.N_cv] | heat (from HeatTransferBasePB2Air) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.Records.IComPackedBedControlVolume_L4 | iCom (from HeatTransferBasePB2Air) | ||
| TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.PackedBedGeometry.PackedBedGeometry_N_cv | geo (from HeatTransferBasePB2Air) | ||
| SI.MassFlowRate[iCom.N_cv + 1] | m_flow (from HeatTransferBasePB2Air) | Mass flow rate | |
| SI.Temperature[iCom.N_cv] | T_mean (from HeatTransferBasePB2Air) | ||
| SI.CoefficientOfHeatTransfer | alpha (from HeatTransferBasePB2Air) | Heat transfer coefficient |