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A gas turbine engine (GTE) with a free power turbine driven by an electric generator is considered. The GTE has an automatic computerized control system (ACS). The fuel for the gas turbine engine is natural gas. The fuel dosage is managed by computer in the moment of ignition, during the start and the idle operation of gas turbine engine.

Under normal operating conditions, as a result of heat gains onboard ships from engine rooms and crew, the increase in humidity as well as due to the various releases of gases from onboard systems, room air deteriorates, requiring replacement and its processing through the HVAC (heat, ventilation and air conditioning) system. Another feature of the HVAC system for special ships is operating under heavy conditions such as CBRN tightness where operating parameters record extreme values in cooling engine rooms. In the paper, I will present contributions to the study of functional parameters in exploitation of the HVAC system on board special ships under different load operating conditions.