amirhossein-naeejnezhad/refrigeration-cycle-model

How amirhossein-naeejnezhad/refrigeration-cycle-model works

This repository models an R32 vapor-compression refrigeration cycle for data-center cooling. The principal workflow starts with a condenser-water inlet-temperature sweep, designs fixed heat-exchanger conductances, iteratively solves each operating point, reconstructs thermodynamic states and performance, then presents plots and exports tabular results. The map-based compressor model and CoolProp cycle reconstruction form the core physics; LMTD matching couples that physics to the air- and water-side heat exchangers. Source excerpts show the main control flow and core calculations; unsampled notebook behavior is not inferred.

Main entry points: main.py Study runner · thermodynamics.py Cycle reconstruction · utils.py Numeric helpers · heat_exchanger.py HX design

Components 14

Model setup

Model parameters src/config.py
Numeric helpers src/utils.py

Cycle physics

HX design src/heat_exchanger.py
LMTD matching src/heat_exchanger.py
Cycle reconstruction src/thermodynamics.py
Compressor map src/compressor.py

Operating study

Study runner src/main.py
Operating solver src/solver.py

Analysis and results

Tables and CSV src/main.py
Performance plots src/plots_others.py
Pressure-ratio study src/plots_others.py
Cycle diagrams src/plots_ph_ts.py

Other components

Engineer
CoolProp

Connections 18

Engineer → Study runner: runs
Study runner → Model parameters: reads settings src/main.py
Study runner → HX design: designs conductance src/main.py
HX design → Cycle reconstruction: evaluates nominal cycle src/heat_exchanger.py
Study runner → Operating solver: solves sweep src/main.py
Operating solver → Cycle reconstruction: evaluates cycle src/solver.py
Operating solver → LMTD matching: updates temperatures src/solver.py
Cycle reconstruction → Compressor map: evaluates map src/thermodynamics.py
Cycle reconstruction → CoolProp: queries properties src/thermodynamics.py
Study runner → Numeric helpers: converts units src/main.py
HX design → Numeric helpers: calculates LMTD src/heat_exchanger.py
LMTD matching → Numeric helpers: calculates LMTD src/heat_exchanger.py
Study runner → Tables and CSV: builds and exports src/main.py
Study runner → Performance plots: plots results src/main.py
Study runner → Cycle diagrams: plots states src/main.py
Study runner → Pressure-ratio study: runs extrapolation src/main.py
Performance plots → Numeric helpers: uses plot helper src/plots_others.py
Cycle diagrams → CoolProp: queries properties src/plots_ph_ts.py

Drawn by GitDiagram on November 10, 2026 from the repository's file tree, README and source files. Read as Markdown ·