scholarly journals Cooling Cyclic Air of Marine Engine with Water-Fuel Emulsion Combustion by Exhaust Heat Recovery Chiller

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 248
Author(s):  
Victoria Kornienko ◽  
Roman Radchenko ◽  
Mykola Radchenko ◽  
Andrii Radchenko ◽  
Anatoliy Pavlenko ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Fuel Efficiency ◽  
Temperature Drop ◽  
Exhaust Gas ◽  
Heat Utilization ◽  
Exhaust Heat ◽  
Marine Diesel ◽  
Refrigeration Capacity ◽  
Exhaust Heat Recovery

The fuel efficiency of marine diesel engine as any combustion engine falls with raising the temperature of air at the suction of its turbocharger. Therefore, cooling the engine turbocharger intake air by recovering exhaust gas heat to refrigeration capacity is a very perspective trend in enhancing the fuel efficiency of marine diesel engines. The application of water-fuel emulsion (WFE) combustion enables the reduction of a low-temperature corrosion, and, as a result, provides deeper exhaust gas heat utilization in the exhaust gas boiler (EGB) to the much lower temperature of 90–110 °C during WFE instead of 150–170 °C when combusting conventional fuel oil. This leads to the increment of the heat extracted from exhaust gas that is converted to refrigeration capacity by exhaust heat recovery chiller for cooling engine turbocharger sucked air accordingly. We experimentally investigated the corrosion processes on the condensation surfaces of EGB during WFE combustion to approve their intensity suppression and the possibility of deeper exhaust gas heat utilization. The fuel efficiency of cooling intake air at the suction of engine turbocharger with WFE combustion by exhaust heat recovery chiller was estimated along the voyage line Mariupol–Amsterdam–Mariupol. The values of available refrigeration capacity of exhaust heat recovery chiller, engine turbocharger sacked air temperature drop, and corresponding reduction in specific fuel consumption of the main low-speed diesel engine at varying actual climatic conditions on the voyage line were evaluated.

scholarly journals Series of Exhaust Heat Recovery System for Marine Diesel Engine -2nd Report: Evaluation of Steam Circulation Usage Types

2010 ◽  
Vol 45 (6) ◽  
pp. 913-918
Author(s):  
Masaki Adachi ◽  
Katsuhide Hiraoka ◽  
Hiroyuki Murata ◽  
Fujio Inasaka ◽  
Kazuyoshi Harumi ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Marine Diesel Engine ◽  
Exhaust Heat ◽  
Recovery System ◽  
Heat Recovery System ◽  
Marine Diesel ◽  
Exhaust Heat Recovery

scholarly journals Cooling intake air of marine engine with water-fuel emulsion combustion by ejector chiller

2021 ◽  
Vol 323 ◽  
pp. 00031
Author(s):  
Roman Radchenko ◽  
Victoria Kornienko ◽  
Mykola Radchenko ◽  
Dariusz Mikielewicz ◽  
Artem Andreev ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Air Temperature ◽  
Fuel Efficiency ◽  
Temperature Drop ◽  
Climatic Conditions ◽  
Fuel Oil ◽  
Exhaust Gas ◽  
Refrigeration Capacity ◽  
Cooling Air

The fuel efficiency of cooling air at the inlet of marine low speed diesel engine with water-fuel emulsion combustion by ejector chiller utilizing the heat of exhaust gas along the route line Mariupol– Amsterdam–Mariupol was estimated. The values of available refrigeration capacity of ejector chiller, engine intake air temperature drop and corresponding decrease in specific fuel consumption of the main diesel engine at varying climatic conditions along the route line were evaluated. Their values for water-fuel emulsion were compared with conventional fuel oil combustion.

scholarly journals Series of Exhaust Heat Recovery System for Marine Diesel Engine -1st Report: Evaluation of Steam One-through Usage Types

2010 ◽  
Vol 45 (4) ◽  
pp. 572-577
Author(s):  
Masaki Adachi ◽  
Katsuhide Hiraoka ◽  
Hiroyuki Murata ◽  
Fujio Inasaka ◽  
Kazuyoshi Harumi ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Marine Diesel Engine ◽  
Exhaust Heat ◽  
Recovery System ◽  
Heat Recovery System ◽  
Marine Diesel ◽  
Exhaust Heat Recovery

Optimization of Supercritical CO2 Brayton Cycle for Simple Cycle Gas Turbines Exhaust Heat Recovery Using Genetic Algorithm

2018 ◽  
Vol 140 (7) ◽  
Author(s):  
Akshay Khadse ◽  
Lauren Blanchette ◽  
Jayanta Kapat ◽  
Subith Vasu ◽  
Jahed Hossain ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Supercritical Co2 ◽  
Heat Recovery ◽  
Brayton Cycle ◽  
Exhaust Gas ◽  
Exhaust Heat ◽  
Exhaust Heat Recovery

For the application of waste heat recovery (WHR), supercritical CO2 (S-CO2) Brayton power cycles offer significant suitable advantages such as compactness, low capital cost, and applicability to a broad range of heat source temperatures. The current study is focused on thermodynamic modeling and optimization of recuperated (RC) and recuperated recompression (RRC) configurations of S-CO2 Brayton cycles for exhaust heat recovery from a next generation heavy duty simple cycle gas turbine using genetic algorithm (GA). This nongradient based algorithm yields a simultaneous optimization of key S-CO2 Brayton cycle decision variables such as turbine inlet temperature, pinch point temperature difference, compressor pressure ratio, and mass flow rate of CO2. The main goal of the optimization is to maximize power out of the exhaust stream which makes it single objective optimization. The optimization is based on thermodynamic analysis with suitable practical assumptions which can be varied according to the need of user. The optimal cycle design points are presented for both RC and RRC configurations and comparison of net power output is established for WHR. For the chosen exhaust gas mass flow rate, RRC cycle yields more power output than RC cycle. The main conclusion drawn from the current study is that the choice of best cycle for WHR actually depends heavily on mass flow rate of the exhaust gas. Further, the economic analysis of the more power producing RRC cycle is performed and cost comparison between the optimized RRC cycle and steam Rankine bottoming cycle is presented.

HCCI of wet ethanol on dedicated cylinder of a diesel engine using exhaust heat recovery

2018 ◽  
Author(s):  
Mario Martins ◽  
Augusto Perin ◽  
Geovane Prante ◽  
Douglas Pinto ◽  
Macklini Dalla Nora ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Exhaust Heat ◽  
Exhaust Heat Recovery
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