Merge pull request #515 from oemof/features/movingboundary-condensing…

…-heat-exchanger Implement a moving boundary heat exchanger for improved part load modeling
oemof · Mar 1, 2025 · 805d3f7 · 805d3f7
2 parents 36c4b7c + aa7cfad
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diff --git a/docs/references.bib b/docs/references.bib
@@ -420,3 +420,14 @@ @inproceedings{Fritz2024
   author = {Fritz, Malte and Freißmann, Jonas and Tuschy, Ilja},
   title = {Open-Source Web Dashboard zur Simulation, Analyse und Bewertung von Wärmepumpen}
 }
+
+@article{bell2015,
+  title = {A generalized moving-boundary algorithm to predict the heat transfer rate of counterflow heat exchangers for any phase configuration},
+  journal = {Applied Thermal Engineering},
+  volume = {79},
+  pages = {192-201},
+  year = {2015},
+  issn = {1359-4311},
+  doi = {https://doi.org/10.1016/j.applthermaleng.2014.12.028},
+  author = {Ian H. Bell and Sylvain Quoilin and Emeline Georges and James E. Braun and Eckhard A. Groll and W. Travis Horton and Vincent Lemort},
+}
diff --git a/docs/whats_new/v0-7-9.rst b/docs/whats_new/v0-7-9.rst
@@ -12,6 +12,16 @@ New Features
   :py:class:`tespy.components.turbomachinery.steam_turbine.SteamTurbine`. To
   use the feature check the documentation of the component class
   (`PR #602 <https://github.com/oemof/tespy/pull/602>`__).
+- Implement a new component class
+  :py:class:`tespy.components.heat_exchangers.movingboundary.MovingBoundaryHeatExchanger`,
+  which allows to make specification of internal pinch temperature difference
+  in case of heat exchanger internal phase changes on the hot or the cold side
+  of the component. It splits the heat exchange automatically in sections,
+  where in each section the phase of the hot and the cold fluid does not change.
+  These sections are utilized to find the minimum pinch internally, and allow
+  to assing heat transfer coefficients `UA` for all individual sections as well
+  as the total sum
+  (`PR #515 <https://github.com/oemof/tespy/pull/515>`__).
 
 Bug Fixes
 #########

diff --git a/src/tespy/components/__init__.py b/src/tespy/components/__init__.py
@@ -10,6 +10,7 @@
 from .heat_exchangers.base import HeatExchanger  # noqa: F401
 from .heat_exchangers.condenser import Condenser  # noqa: F401
 from .heat_exchangers.desuperheater import Desuperheater  # noqa: F401
+from .heat_exchangers.movingboundary import MovingBoundaryHeatExchanger  # noqa: F401
 from .heat_exchangers.parabolic_trough import ParabolicTrough  # noqa: F401
 from .heat_exchangers.simple import HeatExchangerSimple  # noqa: F401
 from .heat_exchangers.simple import SimpleHeatExchanger  # noqa: F401