为提高渔船柴油机余热利用率，研究了渔船缸套冷却水作为驱动热源的硝酸锂-氨吸收式制冷系统的制冰性能。通过热力学模型仿真，分析了发生温度、蒸发温度和冷凝温度等因素对系统性能的影响。研究表明，硝酸锂-氨吸收式制冷系统在发生温度为75℃至85℃的范围内能够稳定运行，COP最高可达约0.5。发生温度较高时系统能够在较宽的蒸发温度范围内维持较高的COP，显示出较强的适应性和可靠性。此外，㶲效率的计算结果表明，高温热源能够更有效驱动系统实现低蒸发温度，冷凝温度的升高会导致ECOP显著衰减。综合分析表明，硝酸锂-氨吸收式制冷系统适用于渔船的海上作业的制冰需求，能够高效利用渔船的余热进行制冷，具有较好的能源利用潜力和节能减排效果。

To improve the utilization efficiency of waste heat from fishing boat diesel engines, the ice-making performance of a lithium nitrate-ammonia absorption refrigeration system driven by the cooling water of the fishing boat's cylinder liner was studied. Through thermodynamic model simulation, the effects of factors such as generation temperature, evaporation temperature, and condensation temperature on system performance were analyzed. The research indicates that the lithium nitrate-ammonia absorption refrigeration system can operate stably within the generation temperature range of 75°C to 85°C, with the Coefficient of Performance (COP) reaching up to approximately 0.5. When the generation temperature is higher, the system can maintain a higher COP over a wider evaporation temperature range, demonstrating strong adaptability and reliability. In addition, the calculation results of the energy efficiency coefficient (ECOP) show that high-temperature heat sources can more effectively drive the system to achieve low evaporation temperatures, while an increase in condensation temperature significantly reduces the ECOP. Overall, the lithium nitrate-ammonia absorption refrigeration system is suitable for the ice-making needs of fishing boats during offshore operations, efficiently utilizing the waste heat from the fishing boat for refrigeration, and offering good energy utilization potential as well as energy-saving and emission-reducing effects.