The utilization of waste energy sources and their treatment are very important in marine science due to their numerous benefits such as energy saving and feasible fuel conservation. Hence, this paper proposes three different configurations of waste heat recovery systems for the successful recovery of waste heat sources in diesel engines to obtain the highest level of power generation from the ship engines. The results of this study indicate that the new organic Rankine cycle system with the utilization of jacket cooling water presents better thermodynamic efficiencies and lower unit power cost in comparison with two other systems. Among the evaluated refrigerants, the R600 shows better thermoeconomic characteristics among other refrigerants. Several analyses show that the utilization of water jacket cooling beside the exhaust gases of the engine resulted in the fuel conservation of 209486 gallons per year of operation, which is about 23.3% higher than the base system without jacket cooling exchanger. Furthermore, it is observed that increasing the engine loading improves the net power output and also the payback period of the systems. This method might provide researchers with information to assess the benefit and the cost of each configuration modification and determine the direction of further improvement.

废物能源的利用及其处理在海洋科学中非常重要，因为它们具有许多优点，例如节省能源和节省燃料。因此，本文提出了三种不同的废热回收系统配置，以成功回收柴油机中的废热源，从而从船舶发动机中获得最高的发电量。这项研究的结果表明，与其他两个系统相比，利用夹套冷却水的新型有机朗肯循环系统具有更好的热力学效率和更低的单位电力成本。在评估的制冷剂中，R600具有比其他制冷剂更好的热经济特性。多项分析表明，在发动机废气旁使用水套冷却系统可每年节省209486加仑燃油，比不使用水套冷却热交换器的基础系统高约23.3％。此外，可以观察到，增加发动机负载可以改善净功率输出，还可以改善系统的投资回收期。该方法可能为研究人员提供信息，以评估每种配置修改的收益和成本，并确定进一步改进的方向。可以看出，增加发动机负荷可以改善净功率输出，还可以改善系统的投资回收期。该方法可能为研究人员提供信息，以评估每种配置修改的收益和成本，并确定进一步改进的方向。可以看出，增加发动机负荷可以改善净功率输出，还可以改善系统的投资回收期。这种方法可能为研究人员提供信息，以评估每种配置修改的收益和成本，并确定进一步改进的方向。