Modeling Carnot Batteries (Thermal Energy Storage), a Python package.
This is a project aiming to model thermal energy storages using heat pumps for charging, organic Rankine cycles (ORC) for discharging and different kinds of storages. For this, it is planned to use detailed fluid models (as implemented e.g. in REFPROP, CoolProp, or TREND ) and setting up systems which can either be steady state or (later) also unsteady. For the moment a Refprop license is needed. Since this project just starts, do not expect too much.
If Trend is installed and shall be used, in the configuration file carbatpy.cb_config.py the dictionary _TREND has to be set from {“USE_TREND”:False, “TREND_DLL”:””, ‘TREND_PATH’:””} to True and the two paths must be set as system variables. (The Trend part is only ready for thermodynamic data, no transport data!)
It is aimed to have heat exchangers, machines and storages as compounds, which can be combined to different charging and dicharging configurations. For these, the energy balance, mass balance and further relations will be applied/solved. Later on also thermo-economic calculations are planned.
For the beginning, the solution of the spatially resolved heat exchanger profiles, a boundary value problem, and its irreversibility will be implemented. An optimization will follow. The main part of carbatpy are the subpackages in models
The main part of carbatpy are the subpackages in models:
- cb_fluids
Evaluate fluid mixture properties using REFPROP and TREND.
- components
Evaluate the change of state of a fluid when passing different devices like machines (turbines, compressors), heat exchangers, throttles, etc.; see comp.py.
- coupled
Evaluate the coupled devices leading to thermodynamic cycles and Carnot batteries.
Burak Atakan, University of Duisburg-Essen, Germany
You can contact us at: batakan [a t ]uni-duisburg.de or atakan.thermodynamik.duisburg [ a t] gmail.com
Free software: MIT license
Documentation: https://carbatpy-010.readthedocs.io/en/latest/
Features
Can actually calculate steady state heat pumps, ORCs and Carnot-batteries with two storage tank pairs.
Only thermodynamics (at the moment): no heat exchanger calculations, only minimum approach temperatures used.
Fluid properties from Refprop (NIST)
Fluid properties from TREND (RU Bochum, Prof. Roland Span) for thermodynamic property calculations.
Optimizing pressure levels for high second law efficiencies.
Cost estimation with correlations from the literature
Include detailled machine models from SPP 2403
Reading the cycle configuration(s) and parameters from a yaml-file.
Include heat exchanger calculations (solvving the ODE with local properties)
Calculating efficiencies and costs of Carnot batteries in quasi steady-state
- TODO
Evaluate time dependent cycle dependence
Credits
This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template.
The machine models from the Chair of Turbomachinery at University of Duisburg- Essen are used, authored by S. Folkers and Prof. D. Brillert.
1 maintainer
Metadata
1 maintainer
Release files for carbatpy 0.5.6
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
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| carbatpy-0.5.6.tar.gz | 3.2 MB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| carbatpy-0.5.6-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 6.4 MB
Release files / carbatpy-0.5.6.tar.gz
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Release files / carbatpy-0.5.6-py3-none-any.whl
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