SPUNG.jl

"""

    function function SPUNG(components,
        refmodel=PropaneRef(),
        shapemodel=SRK(components),
        shaperef = SRK(refmodel.components))
    
## Description

SPUNG: _State Research Program for Utilization of Natural Gas_

[`ECS`](@ref) method. It uses [`SRK`](@ref) as the shape model and [`PropaneRef`](@ref) as the reference model.

## References

1. Wilhelmsen, Ø., Skaugen, G., Jørstad, O., & Li, H. (2012). Evaluation of SPUNG* and other equations of state for use in carbon capture and storage modelling. Energy Procedia, 23, 236–245. [doi:10.1016/j.egypro.2012.06.024](https://doi.org/10.1016/j.egypro.2012.06.024)
"""
function SPUNG(components,
    refmodel=PropaneRef(),
    shapemodel = SRK(components),
    shaperef = SRK(refmodel.components))
    model = ECS(shapemodel,shaperef,refmodel)
    return model
end

export SPUNG