Development and validation of a new turbocharger simulation methodology for marine two stroke diesel engine modelling and diagnostic applications

Sakellaridis, Nikolaos; Raptotasios, Spyridon I.; Antonopoulos, Antonis; Mavropoulos, G. C.; Hountalas, D. T.

doi:10.1016/j.energy.2015.08.049

Cited by 34 publications

(12 citation statements)

References 33 publications

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“…9 Change in the condensate pump energy and exergy efficiencies during the increase in the pump load tained by this analysis (according to real measured operating parameters) with the producer specified overall pump efficiency from Table 2. For a faster calculation of the producer overall efficiency, the developed 6 th degree polynomial has been used -equation (1). The expectation of the authors has been that those two efficiencies will differ in the range from 2 to 4 %, because efficiency of any steam system component during exploitation is usually lower when compared to the producer specifications [51].…”

Section: Results Of the Energy And Exergy Analysis For The Condensatementioning

confidence: 99%

“…Diesel engines have a dominant role in marine propulsion if the entire world fleet is taken into account. Nowadays, a typical ship main engine room consists of one two-stroke slow speed diesel engine for the propulsion [1] and [2], while several four-stroke middle speed or fast speed diesel engines are used for electricity production [3]. The correct configuration of the propulsion system installed in the main engine room of each individual ship depends on a number of factors.…”

Section: Introductionmentioning

confidence: 99%

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Energy and Exergy Analysis of the Condensate Pump During Internal Leakage from the Marine Steam Propulsion System

2018

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A B S T R A C TAn energy and exergy analysis of the condensate pump from the marine steam propulsion system during the condensate leakage between pump stages is presented in this paper. Measurements from the steam propulsion system during exploitation were necessary for collecting all the data for the condensate pump analysis. Due to condensate leakage inside the pump casing, the producer specified condensate pressures at the pump outlet could not be obtained during the exploitation. Low condensate pressure at the pump inlet and condensate temperature slightly above the atmospheric significantly influences the pump exergy analysis. Increase in pump load resulted in an increase of pump energy and exergy losses and efficiencies. In the observed load range during the leakage, pump energy losses are between 19.88 kW and 24.78 kW, while pump energy efficiencies are between 11.12 % and 41.54 %. Pump exergy losses are slightly higher, while exergy efficiencies are slightly lower when compared to energy losses and efficiencies. During normal operation, without leakage, the pump energy efficiencies are from 5 % to 20 % higher in comparison with pump operation when the leakage occurs.

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Section: Results Of the Energy And Exergy Analysis For The Condensatementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy and Exergy Analysis of the Condensate Pump During Internal Leakage from the Marine Steam Propulsion System

2018

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“…Wang et al[10] developed a theoretical model for a marine centrifugal compressor based on thermodynamic laws. In [11], a marine turbocharger model based on the average line method was proposed, the highlight of which was that the model could be tuned with a relatively small amount of measured data.By analyzing the above-mentioned researches, it can be found that most modeling methodologies of marine compressors for both the mass flow rate and isentropic efficiency fall into the curve fitting method category. This is due to the fact that relative to their lookup table counterparts, stronger physical fundamentals can be embedded into the models developed with this method.…”

mentioning

confidence: 99%

“…[10] developed a theoretical model for a marine centrifugal compressor based on thermodynamic laws. In [11], a marine turbocharger model based on the average line method was proposed, the highlight of which was that the model could be tuned with a relatively small amount of measured data.…”

mentioning

confidence: 99%

“…Aiming at this problem, some researchers have attempted to develop theoretical models to predict the working characteristics of compressors without the help of performance maps. These theoretical models can be divided into 3-D, 2-D, and 1-D models in order of decreasing complexity [2,11,[30][31][32]. Due to the large computational requirements, the 3-D and 2-D theoretical models are not suitable for control-and diagnostic-oriented dynamic simulations.…”

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confidence: 99%

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Applicable and Comparative Research of Compressor Mass Flow Rate and Isentropic Efficiency Empirical Models to Marine Large-Scale Compressor

Shen

Zhang

et al. 2019

Energies

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A compressor is an indispensable component of marine large two-stroke diesel engines. For this type of engine, the compressor mass flow rate and isentropic efficiency empirical models are preferred for both the working cycle dynamic simulation research and the design and testing of control and diagnostics algorithms due to their compact and simple structures, and satisfactory prediction accuracy. Due to absence of comprehensive applicable and comparative research on compressor mass flow rate and isentropic efficiency empirical models for large-scale marine compressors in the literature, two marine compressors with different size, flow rate range, and speed range were selected as research objects in this paper, and a relevant study was conducted to compare and analyze the prediction ability of several classical models, and some recently proposed compressor mass flow rate and isentropic efficiency empirical models. The range of this comparative study includes the prediction accuracy in the design operating area and the extrapolation ability in off-design operating areas. Based on the obtained research results, several guidelines are summarized, which can be followed when developing compressor mathematical models, especially for marine applications. In addition, several research interests are discussed and presented, which can be further studied in the future.

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Efficiency, safety, and reliability analysis of turbocharging in a large container vessel

Anantharaman

Islam

Garaniya

et al. 2022

Process Safety Progress

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Commercial shipping is currently dominated by mega container vessels. The shipping industry has seen a 10‐fold increase in the size of containers over the last four decades. These vessels are propelled by large marine diesel engines, hereafter referred to as the main engine. The performance of the main engine is determined by its subsystems. An important part of the main engine is the turbocharging system, which contributes to its safety, efficiency, and reliability. In this study, the effectiveness and reliability of the turbocharging system are evaluated. The Australian Maritime College has a Kongsberg Engine Simulator that can produce a variety of malfunctions on a running engine's turbocharging system. Analyzing the results obtained from the simulator determines the efficiency of the turbochargers. The study will provide recommendations for improving the safety of the turbocharging system for better performance to be achieved by the turbochargers, leading to an improvement in the main engine's performance. Last, the reliability of the turbocharging system is evaluated quantitatively using a fault tree analysis and reliability block diagrams. This will enable an optimum maintenance strategy to be established to ensure the safe operation of the vessel.

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Development and validation of a new turbocharger simulation methodology for marine two stroke diesel engine modelling and diagnostic applications

Cited by 34 publications

References 33 publications

Energy and Exergy Analysis of the Condensate Pump During Internal Leakage from the Marine Steam Propulsion System

Energy and Exergy Analysis of the Condensate Pump During Internal Leakage from the Marine Steam Propulsion System

Applicable and Comparative Research of Compressor Mass Flow Rate and Isentropic Efficiency Empirical Models to Marine Large-Scale Compressor

Efficiency, safety, and reliability analysis of turbocharging in a large container vessel

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