A combined-cycle power plant includes: a gas turbine assembly (2), having an air intake (18) for suction of an inlet airflow (Q I ); auxiliary devices (10); a closed cooling circuit (11) for cooling the auxiliary devices (10); and an inlet air heating devi...

A cogeneration system including a pre-heater (50) to pre-heat outdoor air blown toward the outdoor heat exchanger (45) during a heating operation of a heat pump type air conditioner (40), an auxiliary evaporator (60) to evaporate a refrigerant emerging fro...