Heat Exchanger Simulation for Ballast Water Management Based on Ship Size and Engine Capacity

The potential source of pollution in the sea comes from ballast water. It can potentially pollute if it comes from other areas, so it can carry invasive microorganisms. These microorganisms can become invasive to local organisms and can damage the balance of the ecosystem in an area. The objective of this paper is to analyze ballast water treatment by using a simulation using heat recovery from ship engines based on the size and type of ship. The method of this research is to design a heat exchanger that can be used on ships, where it will heat up ballast water with the aim of killing the microorganisms in it. In designing the heat exchanger, the Tubular Exchanger Manufacturers Association (TEMA) is used. The results obtained have been a 10000 dwt tanker with an average temperature of ballast water outlet of 56.8 °C, a 10000 TEUs container ship with an average temperature of ballast water outlet of 84 °C, and a 10000 dwt general cargo ship with an average temperature of ballast water outlet of 67.3 °C. With temperatures above 60 °C, it is enough to kill microorganisms optimally.