.TransiEnt.Storage.Gas.UndergroundGasStoragePressureLossHeatTransfer_L2

Information

1. Purpose of model

This model represents an underground compressed gas storage.

2. Level of detail, physical effects considered, and physical insight

This model combines the models UndergroundGasStorageHeatTransfer_L2 and UndergroundGasStoragePressureLoss_L2. So it considers pressure losses in the pipes and heat transfer to the storage walls. The documentation is given in those two models.

For the heat transfer the following constant ground temperatures are assumed: For the storage and the incoming pipe T_material, and for the outcoming pipe simCenter.T_ground.

3. Limits of validity

The model is only valid for negligible pressure losses and negligible changes of the heat transfer coefficient (other heat transfer models can be used). For high pressures there are errors due to errors in the gas models.

4. Interfaces

gasPortIn: Real gas output

gasPortOut: Real gas input

p_storage: signal output of the gas pressure

5. Nomenclature

(no elements)

6. Governing Equations

(no remarks)

7. Remarks for Usage

(no remarks)

8. Validation

Model taken from Tietze and Stolten [1].

9. References

[1] Tietze, Vanessa, and Detlef Stolten. Comparison of hydrogen and methane storage by means of a thermodynamic analysis. International Journal of Hydrogen Energy 40.35 (2015): 11530-11537.

10. Version History

Model created by Carsten Bode (c.bode@tuhh.de) in Oct 2016

Model revised by Carsten Bode (c.bode@tuhh.de) in Apr 2018 (changes due to ClaRa changes: exchanged wall model, added wall model for top and bottom)

Contents

Name	Description
Material	Material surrounding the storage