The main reason for the relatively high efficiency of the ORC is
that the working fluid can be selected to suit the heat source
thermodynamically. Hence, a much studied subject and a nontrivial
task is the selection of the most suitable working fluid. Due
to the large number of potential fluid candidates, it is a relatively
laborious task to determine the maximum potential efficiency
when applying an ORC to utilise a given (waste) heat source. The
main reason is that finding the maximum potential of the ORC