ThermoCycleGlides.jl

Documentation of ThermoCycleGlides.jl.

The goal of this package is to provide a non-linear solver for Heat Pump and Organic Rankine Cycle systems. It solves for pressures at the evaporator and the condensor for given pinch-point temperatures and provides a framework for plotting the solution. As of now the package is robust for subcritical cycle parameters. For thermodynamic properties, Clapeyron.jl is used as backend.

For details of modeling see: Carnot batteries for heat and power coupling: Energy, Exergy, Economic and Environmental (4E) analysis - Laterre, Antoine, which describes modeling for pure fluids. This package extends the method for mixtures.

The nonlinear solver chosen is Newton-Raphson with box bounds which is inspired by the implementation in NLboxsolve.jl.

This package only supports steady-state applications.

There are 4 systems provided:

1. Organic Rankine Cycle : ORC
2. Organic Rankine Cycle with internal heat exchanger : ORCEconomizer
3. Heat Pump : HeatPump
4. Heat Pump with internal heat exchanger : HeatPumpRecuperator

The implemented version of these systems consist of the following components:

1. Compressor : Modelling with isentropic efficiency
2. Expander : Modelling with isentropic efficiency
3. Valve : Modeled as isenthalpic process
4. Evaporator : Volumes of equal change in enthalpy.
5. Condenser : Volumes of equal change in enthalpy.
6. Heat Exchangers (no phase change) : using $\epsilon$ as effectiveness of heat exchanger.