A Novel Energy Saving and Power Production System Performance Analysis in Marine Power Plant Using Waste Heat

Durmuşoǧlu, Yalçın; Satır, Tanzer; Deniz, Cengiz; Kılıç, Alper

doi:10.1109/icmla.2009.34

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…In order to optimize energy management, attempts to reconfigure the control of the power system onboard have been made in [1]- [2], while a waste heat recovery system has been proposed in [3]. In addition, ships nowadays adopt the slow steaming practice and operate Main Engine (M/E) at lower speeds, leading to varying flow requirements for machinery associated with water cooling and air ventilation systems due to the need for derated capacities [4].…”

Section: Introductionmentioning

confidence: 99%

A data-driven process control topology for energy efficiency optimization of fan operation in E/R ventilation system of marine vessels

Giannoutsos

Manias

2014

2014 IEEE Industry Application Society Annual Meeting

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The capacity of engine room (E/R) ventilation fans installed in marine vessels is defined during design stage based on maximum air flow required by Main Engine (M/E), Diesel Generators (D/Gs) and Boilers. However, the actual vessel's operating profile at reduced M/E power and speed does not justify the use of full capacities. In this paper, a data-driven process control topology is proposed to adjust the speed of E/R ventilation fan motors according to the variation of combustion air flow requirements in order to optimize energy efficiency during ship's sea-going and cargo operation periods. The controller dynamics are established through parameter monitoring, regardless of the model of the controlled plant. For the tanker vessel under investigation, a case study initially defines the plant operational constraints and its power saving potential. The proposed variable frequency process control topology is then applied as a retrofit installation to the existing 18.5kW E/R fan motor starters. Onboard experimental results show significant improvement in vessel's power balance, D/G fuel consumption and level of emission factors (CO 2 , SO 2 , NO x ), validating the performance of the proposed control topology, which is implemented using commercial Programmable Logic Controllers (PLCs) and Variable Speed Drive (VFD) units.

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Section: Introductionmentioning

confidence: 99%

A data-driven process control topology for energy efficiency optimization of fan operation in E/R ventilation system of marine vessels

Giannoutsos

Manias

2014

2014 IEEE Industry Application Society Annual Meeting

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“…The marine industry's solution provider Wärtsilä with Turboden of Italy jointly developed the Wärtsilä marine engine combined cycle (ECC) based on ORC technology. Adopted in a cogeneration power plant of a ship, this solution saves 17.1% of the total energy [58].…”

mentioning

confidence: 99%

Use of LNG Cold Potential in the Cogeneration Cycle of Ship Power Plants

Wang

Lebedevas

Rapalis

et al. 2020

JMSE

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This paper presents the results of a numerical study on the parameters that affect the efficiency of the cogeneration cycle of a ship’s power plant. The efficiency was assessed based on the excess power (Ngen.) of a free turbine, operated with the inflow of gaseous nitrogen, which was used to generate electricity. A mathematical model and simulation of the regenerative cycle were created and adjusted to operate with a dual-fuel (diesel-liquid natural gas (LNG)) six-cylinder four-stroke engine, where the energy of the exhaust gas was converted into mechanical work of the regenerative cycle turbine. The most significant factors for Ngen. were identified by parametrical analysis of the cogeneration cycle: in the presence of an ‘external’ unlimited cold potential of the LNG, Ngen. determines an exhaust gas temperature Teg of power plant; the pressure of the turbo unit and nitrogen flow are directly proportional to Ngen. When selecting the technological units for cycle realization, it is rational to use high flow and average πT pressure (~3.0–3.5 units) turbo unit with a high adiabatic efficiency turbine. The effect of the selected heat exchangers with an efficiency of 0.9–1.0 on Ngen. did not exceed 10%. With LNG for ‘internal’ use in a ship as a fuel, the lowest possible temperature of N2 is necessary, because each 10 K increment in N2 entering the compressor decreases Ngen. by 5–8 kW, i.e., 5–6%.

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“…This technology includes a boiler, a work-producing expansion device, a condenser and a pump like as the components of steam power plant. There are several advantages in using an ORC to recover low-grade waste heat, including economical utilization of energy resources, smaller systems and reduced emissions of CO, CO2, NOx and other atmospheric pollutants [4].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Environmental Analysis of Low-Grade Waste Heat Recovery System for a Ship Power Plant

Deniz¹

2015

IJES

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Shipping is a growing sector in the global economy and its contributions to global greenhouse gas (GHG) emissions are expected to increase. Energy efficiency has always been an important factor to minimize GHG emissions. Waste heat recovery (WHR) systems can be used for both improving energy efficiency and reducing energy consumption and GHG emissions. Organic Rankine Cycles (ORC) systems are the most widely used technology for low temperature heat recovery from exhaust gases in the industrial applications. But this system is not widely used in ship applications. In this study thermodynamic performance criteria of ORC system for a container ship are developed and thermodynamic, environmental and economic effects of the system are analyzed. It can be achieved additionally 2% reduction for the ship fuel consumption by utilizing the ORC system.

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A Novel Energy Saving and Power Production System Performance Analysis in Marine Power Plant Using Waste Heat

Cited by 8 publications

References 5 publications

A data-driven process control topology for energy efficiency optimization of fan operation in E/R ventilation system of marine vessels

A data-driven process control topology for energy efficiency optimization of fan operation in E/R ventilation system of marine vessels

Use of LNG Cold Potential in the Cogeneration Cycle of Ship Power Plants

Thermodynamic and Environmental Analysis of Low-Grade Waste Heat Recovery System for a Ship Power Plant

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