In this paper a thermodynamic assessment and a preliminary cost evaluation are given for an evaporativegas turbine (EvGT) cycle packed humidi.er. Both background theory and simulation results are included.Two di.erent approaches were used for the humidi.er system modelling: the full integration of the massenergybalance and mass transfer equations (called SAT model), and an atmospheric cooling tower-basedmodel (called CT model). Both approaches were used to perform component thermodynamic analyses andto determine the humidi.er packing design.Within these approaches, two simulation cases are discussed: a test case, with experimental results fromthe pilot-plant of the University of Lund, and a case study of the saturators for the optimised HAT (humidair turbine) cycles of a plant with a 50 MW power output. The two cases presented consider two di.erentoperating conditions for the saturator: the .rst being a ”non-optimised” saturator, and the later the”optimal” con.guration with reduced exergetic losses. For the case study, the saturator design and costevaluation are also included.All simulation results were performed with the in-house SAT (SATurator simulation tool) code.
