Design and Build the Exhaust Gas Energy-Utilizing-Heat Exchanger for Diesel Engines
- Author Truong Thanh Hai
- Co-Author Le Van Vang
- DOI
- Country : Vietnam
- Subject : Transport
Keywords : : heating system, exhaust gas, diesel engine
Abstract
Vietnam shipbuilding industry is developing strongly. For ships with a large tonnage of 50 to 100,000 tons, moreover the main engine installed on board is a diesel engine with a large capacity of tens of thousands of horsepower. Emissions generated by the main engine have a large flow, pressure and temperature are still quite high at about 0.35Mpa and 400oC, bringing large energy sources to the outside. This energy source accounts for about 20 to 25% of the burning heat generated in the combustion chamber. If you make full use of this energy source, it will contribute to saving fuel and increasing the efficiency of the ship power system. In addition to bringing high economic benefits due to a significant reduction in input fuel costs, reducing costs for handling waste and reducing environmental pollution, boilers that utilize exhaust heat do not consume fuel. It also contributes to the supply of saturated steam for heavy oil heating, fresh water distillation, oil and water separation, blowing sea valves, serving the crew's activities and cooking. For some large and modern ships that have used superheated steam due to boiler to operate generators, serving air conditioner cooling, food preservation.
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