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首页> 外文期刊>Energy Conversion & Management >Experimental investigation on binary ammonia-water and ternary ammonia-water-lithium bromide mixture-based absorption refrigeration systems for fishing ships
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Experimental investigation on binary ammonia-water and ternary ammonia-water-lithium bromide mixture-based absorption refrigeration systems for fishing ships

机译：基于二元氨水和三元氨水溴化锂混合物的渔船吸收式制冷系统的实验研究

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摘要

Heat recovery of marine engine exhaust gas is an effective way of improving the onboard fuel economy and environmental compliance of fishing ships. Among such heat recovery techniques, the absorption refrigeration cycle shows potential as it can convert the exhaust thermal energy into refrigeration output and meet the onboard refrigeration requirement. However, the severe operating conditions on the shipboard poses a great challenge for its application. This paper presents an experimental investigation of an absorption refrigeration system for the heat recovery of marine engine exhaust gas. To overcome the adverse effect of the severe onboard condition on the rectification process of the absorption refrigeration system, a ternary ammonia-water-lithium bromide mixture is selected as the working fluid. A prototype of the absorption system is designed and an experimental investigation is conducted. Then, the performances of both the ternary ammonia-water-lithium bromide-based system and binary ammonia-water-based system are compared. The results show that the rectifier heat exchange area can be reduced by approximately 16% under the experimental working condition. Furthermore, the ternary system operates at a relatively lower pressure, with a refrigeration temperature of less than -15.0 degrees C, which is higher compared to the temperature of less than - 23.6 degrees C associated with the binary system. Nevertheless, the ternary system achieves a remarkably higher cooling capacity. Moreover, by using the ternary ammonia-water-lithium bromide mixture, the heat loss of the prototype is reduced while the coefficient of performance and electric coefficient of performance are increased, indicating that the ternary system has a higher energy conversion efficiency.
机译：船用发动机废气的热回收是改善船上燃料经济性和渔船环境合规性的有效方法。在这种热回收技术中，吸收式制冷循环具有潜力，因为它可以将废热能转化为制冷输出并满足机载制冷要求。然而，船上严酷的操作条件对其应用提出了巨大的挑战。本文提出了一种用于船用发动机废气热回收的吸收式制冷系统的实验研究。为了克服严重的机载条件对吸收式制冷系统的精馏过程的不利影响，选择三元氨水溴化锂混合物作为工作流体。设计了吸收系统的原型并进行了实验研究。然后，比较了三元氨水溴化锂基体系和二元氨水溴化体系的性能。结果表明，在实验工作条件下，整流器的换热面积可减少约16％。此外，三元系统在相对较低的压力下操作，其制冷温度小于-15.0摄氏度，与与二元系统相关的小于-23.6摄氏度的温度相比更高。然而，三元系统实现了明显更高的冷却能力。而且，通过使用三元氨-水-溴化锂的混合物，减少了原型的热损失，同时提高了性能系数和电性能系数，表明三元系统具有更高的能量转换效率。

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