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Thermodynamic Cycles

Software written in python that simulate thermodynamic processes.

Construct thermodynamic cycles, calculate state and processes variables such as temperature, entropy, work e.t.c., create several diagrams (T-s, h-s, P-v e.t.c.) and save all the above to .png and .csv files correspondingly.

Currently the following working fluids are supported:

  • Ideal gas,

  • Van der Walls gas and

  • Two Phase fluid.

The factory software design pattern is heavily used.

Ideal gas.

Implementation of the ideal gas formulations for Isobaric, Isochoric and Isentropical processes.The others types of processes are to be made.

Van der Walls gas.

Solving the Van der Walls equation numericaly using Newtons method. Works for Isobaric and Isothermal processes. The others types of processes are to be made.

Two Phase fluid.

Using @CoolProp library to calculate system variables. Works for Isobaric and Adiabatic processes. The others types of processes are to be made.

Future improvements are to comment the code and implement all types of processes for each working fluid.

Example results:

States values

States s [kJ/kgK] P [bar] T [K] $\theta\ [ ^\circ C ]$ x [--] h [kJ]
1 1.434 1.5 384.5 111.35 0.0 : Saturated Liquid 467.081
a 1.434 10.0 384.57 111.42 -0.146 : Subcooled Liquid 467.991
b 2.138 10.0 453.04 179.89 0.0 : Saturated Liquid 762.683
c 2.138 30.0 453.32 180.17 -0.136 : Subcooled Liquid 764.934
3 2.646 30.0 507.01 233.86 0.0 : Saturated Liquid 1008.371
4 6.186 30.0 507.01 233.86 1.0 : Saturated Steam 2803.265
5 6.585 30.0 583.21 310.06 1.121 : Superheated Steam 3019.653
6 6.638 10.0 462.31 189.16 1.012 : Superheated Steam 2801.372
7 7.162 10.0 583.21 310.06 1.147 : Superheated Steam 3073.203
8 7.297 1.5 398.31 125.16 1.013 : Superheated Steam 2722.105

Processes values

Process Type q [kJ/kg] wt [kJ/kg] w [kJ/kg]
1--a Adiabatic 0.00000e+00 -7.95507e-01 -8.73706e-04
a--b Isobaric 0.00000e+00 0.00000e+00 0.00000e+00
b--c Adiabatic 0.00000e+00 -2.25090e+00 -1.00000e-03
c--3 Isobaric 2.43438e+02 0.00000e+00 -1.00000e-03
3--4 Isobaric 1.79489e+03 0.00000e+00 -1.00000e-03
4--5 Isobaric 2.16388e+02 0.00000e+00 -1.00000e-03
5--6 Adiabatic 0.00000e+00 2.18281e+02 -1.00000e-03
6--7 Isobaric 2.37500e+02 0.00000e+00 -8.73706e-04
7--8 Adiabatic 0.00000e+00 3.06756e+02 -8.73706e-04
8--1 Isobaric -1.97023e+03 0.00000e+00 -8.73706e-04