A comprehensive waste heat recovery system for marine low-speed diesel engines
A diesel engine, low-speed technology, applied in the direction of mechanical equipment, engine components, combustion engines, etc., can solve the problems of limiting cylinder jacket water and waste heat recovery and utilization of air coolers, and achieve comprehensive utilization, expansion of available waste heat, and expansion of waste heat utilization range effect
Active Publication Date: 2015-10-28
HARBIN ENG UNIV
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Problems solved by technology
In addition, the ultra-low temperature exhaust waste heat boiler water heater and the organic working medium steam turbine generator set are arranged in an independent circuit, which also limits the recovery and utilization of cylinder jacket water and air cooler waste heat
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[0033] Below in conjunction with accompanying drawing and embodiment, the ship low-speed diesel engine waste heat comprehensive recovery system of the present invention is further described:
[0034] The purpose of the invention is to improve the energy utilization efficiency of the marine low-speed diesel engine power system. In order to achieve this purpose, the guiding ideology of the overall scheme of the present invention is put forward by fully considering the utilization of the energy of the exhaust gas of the ship's low-speed diesel engine below 170°C, and comprehensively improving the waste heat utilization potential of the ship's main diesel engine.
[0035] The ship low-speed diesel engine waste heat utilization system of the present invention is mainly composed of the following parts: a combined waste heat boiler system for recovering ship low-speed diesel engine exhaust waste heat, a power turbine power generation system for using split exhaust energy to do work, a s...
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The invention provides a comprehensive waste heat recovery system of a ship low-speed diesel engine. The comprehensive waste heat recovery system comprises a combined waste heat boiler system, a power turbine power generation system, a steam turbine power generation system, high-temperature cooling water utilization and heat exchange equipment and an organic working medium steam turbine power generation system. Waste heat energy of exhaust of the ship low-speed diesel engine is effectively recycled through a combined waste heat boiler. Waste heat of ship low-speed diesel engine cylinder jacket cooling waste and pressurized air air-cooling heat exchanger cooling water are effectively recycled through a cylinder jacket heat exchanger and a three-section type air-cooling heat exchanger. Exhaust pressure energy is recycled through a power turbine, and hot water energy of the boiler and an air-cooling heat exchanger is recycled through a low-temperature steam turbine. The energy is converted into electric energy, so that waste heat of the ship main engine is comprehensively recycled, heat efficiency of the diesel engine is remarkably improved, and the EEDI energy consumption index of a ship is decreased.
Description
technical field [0001] The invention relates to a waste heat utilization system, in particular to a waste heat recovery system of a marine low-speed diesel engine. Background technique [0002] The energy issue has become a top priority issue in economic development. Ships are means of transportation with huge energy consumption. On the one hand, high energy consumption increases the operating cost of ships, and on the other hand, it also brings serious environmental problems to the operation of ships. How to effectively reduce ship energy consumption is a realistic and important issue. The International Maritime Organization (IMO) has adopted EEDI (Energy Efficiency Design Index, New Ship Energy Efficiency Design Index) as an index to evaluate the energy consumption of ship design. The low energy utilization efficiency of ships will not only face high fuel costs, but also face Additional fines are imposed to compensate for damage to the environment. As the main power of ...
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IPC IPC(8): F02G5/02
CPCY02T10/166Y02T10/12
Inventor 张文平张新玉李文辉周松冯永明张鹏明平剑国杰
Owner HARBIN ENG UNIV