METHOD FOR HEAT RECOVERY FROM INTERNAL COMBUSTION ENGINES FOR SUPPLEMENTARY POWER

摘要

Improved Method of Heat Recovery from Internal Combustion Engines for Supplementary Power Nearly two thirds of the fuel energy consumed in internal combustion engines is expelled as heat in the exhaust gases and coolant. The lower temperature portions of this heat can be upgraded by a heat pump cycle to produce steam which can then be superheated by the higher temperature portion of the exhaust gases. The current proposal for achieving this can be improved by superheating the boiler into two sections; directing the high temperature portion of the exhaust gases into the superheating boiler; and conducting the low temperature portion of the exhaust gases through a heat exchanger in the low temperature boiler; and conducting a controllable portion of the exhaust steam from a driven turbine through the second stage, instead of the first stage of the heat pump cycle.