CONSIDERATION OF HEAT RECOVERY FOR A DIESEL TWO-STROKE ENGINE
Abstract
From the analysis of the heat balance diagram, it appears that the increase in the effective efficiency is possible by reducing the two categories of heat losses. Constructive and functional measures to provide these recoveries are directed mainly towards reducing the heat flows taken over by the cooling fluid and the exhaust gas. This is determined by the high share of these heat flows against the residual heat. The simplest and cheapest system consists of an exhaust gas turbine or steam turbine, the so-called power turbine, installed on a bypass of the gas exhaust or steam from the boiler, and connected in turn with an electric generator to provide electrical power on board the ship. Modern slow diesel engines have high thermal efficiencies, which can be improved through integration with other power systems. The most efficient way for a two-stroke engine-powered ship is to use its engine's waste heat.
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