Fluid temperature control installation for rotorcraft, associating a system for cooling a power plant with a system for heating a cabin

A fluid temperature control installation for an aircraft, said installation comprising at least one cooling system for cooling at least one member for cooling, and at least one temperature control system for controlling the temperature of the air of a cabin of the aircraft;

• the cooling system comprising a closed circuit for circulating a fluid for cooling between the member for cooling and at least one heat exchanger fitted with an airflow generator member, the heat exchanger being interposed on the closed circuit by means of an internal circuit for the fluid for cooling, and including a heat exchange structure through which there is passed a stream of cooling air generated by the airflow generator member;
• and
• the air temperature control system comprising regulator means for regulating a stream of heating air admitted to the cabin, and an open circuit conveying a plurality of air streams, the open circuit having a first air circuit for conveying a source air stream generated by a compressor to at least one temperature control device, and a second air circuit for conveying to the cabin said stream of heating air from the temperature control of the source air stream;
• wherein:
• said airflow generator member is a bladeless ventilator generating the cooling air stream from an activation air stream;
• and wherein
• the cooling system and the temperature control system include a group of members in common, comprising at least:
• a) said compressor generating a source air stream at moderate pressure and temperature, the compressor being an accessory compressor provided with an air inlet and driven by a drive member;
• b) said heat exchanger forming co-operating means for cooling the fluid for cooling and for heating the source air stream coming from the accessory compressor, the heating of the source air stream producing a hot air stream by taking heat contributing to cooling the heat exchange structure;
• and
• c) a distributor valve for distributing said source air stream selectively to the bladeless ventilator by forming the activation air stream and/or to the cabin by forming said heating air stream coming from the hot air stream.