Abstract: The invention is a different scheme plant which changes radically the method of conception of all refrigeration systems, conditioning and heat pump. Sistema F.e.e. shocks all previous concepts regarding the disposal of process heat coming from any industrial production. Sistema F.e.e. is an integrated system in an artificial environment which recovers and utilizes each possible source of thermal energy, to the limit of utilizing the thermal energy which comes from scraps of production auxiliary to its own disposal. Sistema F.e.e. has been the beginning of the third great industrial revolution, which is the energetic revolution in respecting nature. Sistema F.e.e. is instead integrated to nature; our system is the point of beginning which marks the end of the oil and petroleum era.