Patent ID: 8783032
Filing Date: 2014-07-22
Classification: F01K,F02G,Y02T

Abstract:
1. A method for recovering heat dissipated by an internal combustion engine ( 2 ) in a recovery circuit including a pump unit ( 3 ), a heat exchanger ( 4 ), an expansion device ( 5 ), a condenser ( 6 ) and a first control unit ( 7 ) for controlling the pump unit ( 3 ) and first temperature and pressure sensors ( 7 . 1 , 7 . 2 ) connected to the first control unit ( 7 ) for sensing the temperature and pressure of the working fluid leaving the heat exchanger ( 4 ) and a second control unit ( 8 ) for controlling a lower process pressure (p u ) as well as a second pressure sensor ( 8 . 1 ) for sensing the lower process pressure, said method comprising the following steps: compressing a liquid working medium (A) from a the lower process pressure (p vaporizing the working medium (A) in the heat exchanger ( expanding the working medium (A) approximately to the lower process pressure (p condensing the working medium (A) in the condenser ( transferring the working medium (A) to the pump unit ( adjusting the upper process pressure (p adjusting the lower process pressure (p