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

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.

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High Precision Temperature Control and Analysis of RF Deionized Cooling Water System

Proceedings of the 2005 Particle Accelerator Conference ◽

10.1109/pac.2005.1590657 ◽

2006 ◽

Author(s):

Z.D. Tsaia ◽

J.C. Changa ◽

C.Y. Liua ◽

J.R. Chena

Keyword(s):

High Precision ◽

Temperature Control ◽

Water System ◽

Cooling Water ◽

Cooling Water System ◽

Precision Temperature ◽

Precision Temperature Control

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Study on Energy Efficient Operation of Air-Conditioning Cooling Water System

The Open Electrical & Electronic Engineering Journal ◽

10.2174/1874129001509010053 ◽

2015 ◽

Vol 9 (1) ◽

pp. 53-60 ◽

Cited By ~ 1

Author(s):

Wang Liang ◽

Yang Lu-lu ◽

Tian Ya-bin

Keyword(s):

Energy Consumption ◽

Temperature Control ◽

Cooling Tower ◽

Operation Mode ◽

Water System ◽

Cooling Water ◽

Outlet Temperature ◽

Control Logic ◽

Cooling Water System ◽

Load Rate

The control logic of frequency adjustment for pump and cooling tower fan has been presented in this paper, based on the operation mode of a chiller with one pump and one cooling tower. Optimum outlet water temperature control of cooing tower has been put forward through analysis and comparison among factors influencing it, based on measured data. A mathematical model of energy consumption has been established under different outdoor wet-bulb temperature and load rate conditions. The optimized controlling strategy has been obtained after the analysis on energy consumption under two different operational strategies with different number of cooling towers in service. In partial load condition, the best operation mode of cooling water system is the optimal water outlet temperature control system, which aims at the lowest comprehensive system energy consumption. Cooling water system can match the best temperature difference and determine the fan frequency according to optimum outlet temperature automatically. Variable frequency control should be applied to fans; meanwhile, routing maintenance and cleaning is also needed for an even distribution of water and effective use of heat exchange area.

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