The effects of the seawater-intake temperature on the performance of the refrigeration system which exists on a cargo vessel were introduced in this study. The performance of the real refrigeration system was analysed by using both conventional and advanced exergy analyses and exergoeconomic evaluation. First, a parametric study with different seawater-intake temperatures was carried out by applying conventional exergy and advanced exergy analyses to the refrigeration system considered to identify the pinch point components and processes with high irreversibilities. Then, advanced exergy analyses were applied to overcome technological and physical limitations to increase the knowledge about the refrigeration system. The exergetic efficiency of the refrigeration system was calculated based on varying seawater-intake temperature which enters the condenser while other operating parameters are kept constant. Seawater-intake temperatures were selected in terms of regional seawater temperatures which are assumed to be in the vessel route. As a result of the study, it was determined that the hot entry of the seawater into the condenser causes a reduction in the exergetic efficiency of the refrigeration system. The gap between real system exergetic efficiency and the unavoidable cycle exergetic efficiency increased as the pinch point temperature differences increased in the condenser by approximately 16%. Some of the exergy destruction in the refrigeration system components was unavoidable and constrained by technological and physical limitations. Based on the findings in this study, it has been shown that the greatest improvement in the exergetic efficiency of the cooling system can be achieved by improving the condenser and compressor.

这项研究介绍了进水温度对货船上制冷系统性能的影响。实际制冷系统的性能通过使用常规和高级火用分析以及能效经济评估进行了分析。首先，通过对制冷系统应用常规的火用和先进的火用分析来进行具有不同海水进水温度的参数研究，以识别夹点点和不可逆性高的过程。然后，进行了高级火用分析以克服技术和物理限制，以增加有关制冷系统的知识。制冷系统的有效效率是根据进入冷凝器的海水进水温度变化而计算的，而其他运行参数则保持不变。根据区域海水温度选择了进海水温度，假设该区域位于船只路线内。研究的结果是，确定海水的热进入冷凝器会导致制冷系统的充分利用效率降低。实际系统能效与不可避免的循环能效之间的差距随着冷凝器中的收缩点温度差增加约16％而增加。制冷系统组件中的一些火用破坏是不可避免的，并受到技术和物理限制的限制。