Conceptual Design and Performance Analysis of an Exhaust Gas Waste Heat Recovery System for a 10000TEU Container Ship
Концептуальное проектирование и анализ эффективности системы утилизации сбросного тепла выхлопных газов для контейнеровоза вместимостью 10 000 TEU
2012-01-01
SCID: 54.1/3fw32nq5
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10000TEU container shipcombined turbinesexergy efficiencyexhaust gas waste heat recoverythermodynamic analysis
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Abstract (AI)
Conceptual Design and Performance Analysis of an Exhaust Gas Waste Heat Recovery System for a 10000TEU Container ShipAccording to operation characteristics of the main engine 9K98ME-C7, a combined turbines-exhaust gas waste heat recovery system is proposed to recover waste heat and increase system energy efficiency. Thermodynamic models based on the first thermodynamic law and the second thermodynamic law are formulated. The superheated steam yield, the total electric power yield, the first thermodynamic law efficiency, the exergy efficiency at different exhaust gas boiler working pressure, and the variation of the exergy efficiency under different feed water temperature and different steam turbine back pressure are analyzed. Thermodynamic results indicate that the most appropriate exhaust gas boiler pressure is 0.8MPa for studied main engine and the total thermal efficiency with combined turbines arrangement has climbed up to 53.8% from 48.5%.
Key Findings
1
A combined turbines–exhaust gas waste heat recovery system was conceptually designed for a 10,000-TEU container ship powered by a 9K98ME-C7 main engine.
2
First- and second-law thermodynamic models were developed to evaluate steam production, electric power generation, thermal efficiency, and exergy efficiency.
3
System performance was assessed under varying feedwater temperatures and steam turbine back pressures through exergy-efficiency analysis.
4
The combined-turbines configuration increased total thermal efficiency from 48.5% to 53.8%.
5
The optimal exhaust gas boiler working pressure for the studied main engine was identified as 0.8 MPa.
Research Object
the combined turbines–exhaust gas waste heat recovery system for the 10000TEU container ship’s 9K98ME-C7 main engine
Research Subject
the system’s thermodynamic performance and energy-efficiency response to exhaust-gas boiler pressure, feedwater temperature, and steam-turbine back pressure
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2012-01-01
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