Nowadays, shipping industry faces challenges of energy efficiency and reducing of fuel consumption. Moreover, Waste Heat Recovery Systems (WHRS) regarding energy efficiency have a larger focus to utilise the heat energy lost from all thermal processes from ship engines. WHRS is one of the best methods to reduce fuel consumption and implicitly emissions. Refrigeration system, which can be evaluated as one of these systems, has a high energy efficiency potential on ships. In this study, exergoeconomic and air emission analyses of a case study ship named M/V Ince Ilgaz have been performed by comparing Vapour Compression Refrigeration System (VCRS) and VCRS with WHRS on exergy destruction and Second Law Efficiency in case of variable sea water temperature with 15 different refrigerants. Furthermore, a novel proposed WHRS is used for preheating of an accommodation water which leads reducing of exergy destruction about 9.31–10.60% while using R134A refrigerant. The fuel consumption due to refrigerant compressor has a 36% increase with the 10°C increment of sea water temperature. The increase of CO2, SO2, NO x and Particular Matter (PM) emissions is found about 183.40, 3.10, 4.65 and 0.47 tonnes, by the increase of sea water temperature from 20°C to 30°C for the fleet of 15 ships, respectively. In conclusion, using waste heat recovery on refrigeration system could directly reduce fuel consumption and air emissions.

中文翻译：

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带余热回收系统的船用制冷的热能经济和空气排放分析：案例研究

如今，航运业面临着能源效率和降低燃料消耗的挑战。此外，关于能源效率的废热回收系统 (WHRS) 更注重利用船舶发动机所有热过程中损失的热能。WHRS 是减少燃料消耗和隐性排放的最佳方法之一。可作为这些系统之一的制冷系统在船舶上具有很高的能效潜力。在这项研究中，通过比较蒸汽压缩制冷系统 (VCRS) 和 VCRS 与 WHRS 在可变海水温度下的火用破坏和第二定律效率，对名为 M/V Ince Ilgaz 的案例研究船进行了火用经济和空气排放分析使用 15 种不同的制冷剂。此外，一种新提出的 WHRS 用于预热住宿水，使用 R134A 制冷剂时，可将火用破坏减少约 9.31-10.60%。海水温度每升高10°C，制冷压缩机造成的油耗增加36%。由于 15 艘船的船队海水温度从 20°C 增加到 30°C，发现 CO2、SO2、NO x 和特殊物质 (PM) 排放量增加约 183.40、3.10、4.65 和 0.47 吨，分别。总之，在制冷系统中使用余热回收可以直接减少燃料消耗和空气排放。由于 15 艘船的船队海水温度从 20°C 增加到 30°C，发现 CO2、SO2、NO x 和特殊物质 (PM) 排放量增加约 183.40、3.10、4.65 和 0.47 吨，分别。总之，在制冷系统中使用余热回收可以直接减少燃料消耗和空气排放。由于 15 艘船的船队海水温度从 20°C 增加到 30°C，发现 CO2、SO2、NO x 和特殊物质 (PM) 排放量增加约 183.40、3.10、4.65 和 0.47 吨，分别。总之，在制冷系统中使用余热回收可以直接减少燃料消耗和空气排放。