Operation of waste heat recovery systems

Keywords: Waste heat, Turbo charging, Fresh water, Exhaust gas boiler Waste heat recovery systems are commonly used because of with marine engine the amount of the heat carried away by the exhaust gases varies between 30 to 35 per cent and by the jacket coaling, water between 20 to 25 'per cent of the total heat energy supplied to the engine. Recovery of some of this heat loss to the extent 35 to 55 is possible by means of waste heat recovery systems. These systems have many kind of damages in the long run because of they are exposed- corrosion, dirty, mechanical difficulties, overheating, overpressure etc. Thats why performance of these systems decrease. In order to prevent to decline systems must be kept in good conditions and their inspection, testing, starting, closing, cleaning, maintenance and repair must be performed according to procedures on time. Thus the damages and the loss can be reduced to minimum. A few waste heat recovery systems which are commonly built up on board, as follows: 1. Turbocharging sytem 2. Fresh water plant which is heated by main engine jacket water, 3. Inert gas sytem with auxiliary boilers, 4. Steam generated system with Exhaust gas boilers. XI