Possibilities for Improving the Cooling Systems of IC Engines of Marine Power Plants

Abstract

Modern cooling systems for large ships are quite complex. As a rule, such systems are common (combined) for the main and auxiliaries engines. With the auxiliary engines running constantly, even when parked, this system design allows to keep it warm and ready for a quick start of the main engines at any time. Currently, various schemes of such systems are used, including those that are irrational from our point of view. At the same time, there are systems whose schemes are quite consistent with our idea of the rational forms of such structures. It is important to note, and it is saying about it in an article, that such schemes may have a number of significant differences, but at the same time they will comply with the rationality principle if certain rules for the formation of such systems are followed. These schemes will have close compactness. It is also important that there is the possibility of further improvement of such schemes based on certain rules. This improvement is possible due to the introduction of additional heat dissipaters and the organization of appropriate chains of heat sources and heat dissipaters. The article discusses various options for rational schemes of the cooling system for the same ship power plant, as well as the possibility of further improvement of this scheme. It is shown that an increase in the number of coolants of the internal circuit coolant from one to three can reduce the total mass of the heat exchanger cores by 18 %.

Determination of Rational Design Values for Gas-Air Coolers Components of Exhaust Gases of Marine Power Plants

“…Besides, an indirect cause of the development of the greenhouse effect is thermal pollution of the environment due to the relatively high temperature level and quantity of exhaust gases during the operation of sea transport vessel power plants. Moreover, the operation of vessels in different climatic zones of the world's oceans can cause a decrease in the efficiency of the cooling systems of the main and auxiliary engines, which can additionally increase the level of thermal emissions by up to 3% [5].…”