A OVERVIEW OF THE RANKIN CYCLE-BASED HEAT EXCHANGER USED IN INTERNAL COMBUSTION ENGINES TO ENHANCE ENGINE PERFORMANCE

Abstract

The majority of the heat produced by automobiles, primarily by diesel engines, is squandered in various ways. If this waste heat is collected, it can be applied in a variety of other ways. Recently, increased emphasis has been placed on the global issue of rapid economic growth, a relative energy scarcity, internal combustion engine exhaust waste heat, and environmental degradation. The remaining heat is released into the environment through exhaust gases and engine cooling systems, leading to an increase in entropy and significant environmental pollution, so it is necessary to convert waste heat into useful work. Of the total heat supplied to the engine in the form of fuel, approximately 30 to 40% is converted into useful mechanical work. At 4000 RPM, the exhaust gas temperature is at its highest. So a recovery system is created for a constant RPM of 4000. A shell and tube heat exchanger and a uniflow steam engine connected to the main engine make up the recovery system. By reducing the frictional power at the main engine's power stroke and idle stroke, the linked steam engine increases the efficiency of the main engine. Due to the additional recovery system, the system's initial cost is significant. But over time, the system turns out to be profitable.