Modeling Liquid Level in Receiver and Determining Total Mass of Heat Pump in TESPy

[FinnFiT]

Hi TESPy community,

Im new to TESPy and I have a few questions regarding the modeling capabilities of TESPy:

Modeling Liquid Level in Receiver: How can I accurately model the liquid level in a receiver using TESPy? It should vary depending on the total Mass of refrigerant, the current processvalues, the geometry of the receiver and the given massflow.

Determining Total Mass of Heat Pump: Is it possible to calculate the total mass of refrigerant in a heat pump within TESPy? If so, what steps or methods should be followed?

Assigning Geometry to Condenser: Can I assign specific geometrical properties to a condenser in TESPy? If yes, how can this be done?

Any guidance or examples would be greatly appreciated!

Thanks in advance for your help.

[fwitte]

Hi @FinnFiT,

thank you for reaching out.

Modeling Liquid Level in Receiver: How can I accurately model the liquid level in a receiver using TESPy? It should vary depending on the total Mass of refrigerant, the current processvalues, the geometry of the receiver and the given massflow.

In principle you can do this, do you have the governing equations for this? If yes, they can be implemented via the UserDefinedEquation class or in a respective new custom built component.

Determining Total Mass of Heat Pump: Is it possible to calculate the total mass of refrigerant in a heat pump within TESPy? If so, what steps or methods should be followed?

This would require knowledge of the geometries of the components involved, i.e. the heat exchangers, compressor, pipes, potentially flash tank. This is possible as post processing, but you'd have to implement it yourself. It is not part of the current core framework components.

Assigning Geometry to Condenser: Can I assign specific geometrical properties to a condenser in TESPy? If yes, how can this be done?

Same here, if you want to apply geometry to the component and use it to calculate the heat transfer internally, you need to integrate the governing equations and then it can be done. Do you have them ready to use? I'd like to invite you to next week's user meeting (the monthly online meeting Monday 17:00 CEST), then we can discuss this topic in more detail and I can give you a quick intro on how to implement your own components.

Best

Francesco

[FinnFiT]

Hi Fransesco,
Thank you for your reply. Sadly i won't be able to attend Today's monthly online meeting. Are there any other Meetings i could join for example next Week?

[fwitte]

Do you have time tomorrow morning? Or maybe next week on Monday afternoon? Please write me a mail: francesco.witte@dlr.de Thank you!