Patent ID: 9016063
Filing Date: 2015-04-28
Classification: F01K

Abstract:
1. An ORC system (Organic Rankine Cycle) for the conversion of thermal energy into electric energy, comprising: a heating source that supplies a hot source fluid, a primary circuit in which flows the hot source fluid coming from said heating source, a heat exchange group for an exchange of heat between the hot source fluid and a work fluid circulating in a relative working fluid circuit by means of a first pump, where said heat exchange group comprises in succession a first primary preheater and a first primary evaporator respectively for preheating and evaporating of the work fluid, a first expander fed in input by the work fluid exiting from said heat exchange group and connected to a first electric generator, and a first condenser connected on the one hand directly or indirectly to an output of the work fluid from said first expander and on the other hand to an input of said first pump, a first auxiliary evaporator to evaporate one part of the work fluid through a heat exchanger with the hot source fluid coming from an output of said first primary evaporator, a first means for diverting said part of the flow of the work fluid from an outlet of said first primary preheater towards the first auxiliary evaporator, and a first compressor configured to receive the work fluid from said first auxiliary evaporator, and to increase a pressure up to a level corresponding to a preset pressure level for the induction of the work fluid into said first expander.