Application of jacket cooling water system recovery for fuel heating on diesel engine to reduce emissions

Abstract The existence of a diesel engine is very necessary for life today. In development, the diesel engine is experienced many developments in all systems. In line with the development of the diesel engine can’t be separated from the impact of fuel use. This research was carried out to make a fuel heating system by utilizing jacket cooling water system recovery as a fuel heater and the method used in this research is an experimental method including making installation of a fuel heating system, testing on the diesel engine generator with specifications 4 strokes, 4 cylinders, 1500 rpm, 18 kVA using biodiesel (B20) fuel. The data were collected using a smoke opacity meter. The experiment was carried out by heating treatment of fuel starting from 30°C - 50°C at the interval of 5°C. Data analysis by describing experimental data. The result is showed that heating fuel can reduce the emission of the diesel engine.

Download Full-text

Optimization Design of FPSO Central Cooling Water System Based on Pipe Network Fluid Analysis

Volume 5A: Pipelines, Risers, and Subsea Systems ◽

10.1115/omae2019-95966 ◽

2019 ◽

Author(s):

Huan Zhang ◽

Hongtao Yuan ◽

Chao Wang ◽

Weiwen Kong ◽

Jiangguo Xu ◽

...

Keyword(s):

Water System ◽

Cooling Water ◽

Normal Operation ◽

Network System ◽

Pipe Network ◽

Economic Point ◽

Power Generator ◽

System Integrity ◽

Cooling Water System ◽

The Impact

Abstract Marine power generator plays important role to guarantee the normal operation of all subsystems of FPSO, in which cooling device are emphasized on its reliability and stability. As the main cooling system of FPSO power generator, the design of central cooling water system is very important. Traditional pipeline network system design is mainly based on the design manual and empirical formula, which single pipeline is designed for circulation of different media. Lacking the concept of system integrity, which results in the weak integrated design without rational consideration. In this paper, a FPSO central cooling water system is taken as the research object. Based on the initial design scheme, it is different from the empirical and singularity of traditional design, and the impact of the pipe network of cooling water system to that of other systems in the whole vessel is put into consideration on the comprehensive way. From the economic point of view, the study on the pipe network of flow balance is carried out, and the optimization scheme of the central cooling water pipe network system is proposed.

Download Full-text

Cascade temperature control for jacket cooling-water system of two-stroke low-speed marine main diesel engine

Journal of the Korean Society of Marine Engineering ◽

10.5916/jkosme.2018.42.6.457 ◽

2018 ◽

Vol 42 (6) ◽

pp. 457-462

Author(s):

Jong-Kap Ahn ◽

Myoung-Ok So

Keyword(s):

Diesel Engine ◽

Temperature Control ◽

Water System ◽

Cooling Water ◽

Low Speed ◽

Cooling Water System

Download Full-text

Study on the Interaction Between Safety-Related and Non Safety-Related Items in the Component Cooling Water System Room of the Qinshan Nuclear Power Plant in the Earthquake Condition

Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering ◽

10.1115/icone2020-16825 ◽

2020 ◽

Author(s):

Liang Zhang ◽

Gang Xu ◽

Yue Wang ◽

Li Chen ◽

Shao Chong Zhou

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Power Plants ◽

Water System ◽

Cooling Water ◽

Life Extension ◽

Main Body ◽

Cooling Water System ◽

The Impact

Abstract Safety-related items in nuclear power plants are now generally placed separately from the non-safety-related items, but it was not strictly required before. Therefore, it is very important to study whether the non-safety-related items will affect the safety-related items when they are dropped down in an earthquake situation, which determines the safety of a nuclear power plant and its future life extension applications. This research was based on the cooling water system room with the safety and non-safety related items installed together, as an example to study whether the non-safety-related items such as vent pipes and DN50 fire fighting pipes arranged above will damage the DN300 pipes and valves arranged below when earthquakes occur. For the experiments, the relative positions of objects in the room was reproduced by 1: 1. The pressure-holding performance of the pipe was used as a criterion for the damage. The research results of the experiments show that when the 10-meter-long DN50 pipe was dropped from the position of 8 meters height and the 8-meter-long vent dropped from position of 3.6 meters height, they do not affect the integrity of the DN300 valve and pipe below. After the experiment, pressure drop in two hours for the pipe is less than 0.1%. The main body of the valve does not fail neither. The numerical simulation study also shows that there is no failure phenomenon in the simulation as well. Compared with the test results, the impact acceleration and the vent deformation both have the same trend.

Download Full-text