In order to achieve the efficient cascade utilization of various ship's waste heat, improve the energy efficiency of ships and meet the strict requirements of the new international carbon emission regulations, this article proposes a of TEG-ORC (thermoelectric power generation/organic Rankine cycle) combined cycle, and designs the experimental system. Coupling characteristics of each bottom cycle are taken as the entry point in the combined cycle, using the method of system simulation, the influence of TEG/ORC bottom cycle ratio, evaporation pressure and flow rate of ORC working fluid flow on the key performance of system output power, system thermal efficiency, and waste heat utilization rate of main engine flue gas are studied. The results show that TEG-ORC combined cycle can overcome the limitations of TEG or ORC, maximize the recovery amount of waste heat, improve the stability and safety of ORC bottom cycle, simulation results show that when the bottom cycle ratio (Q_TEG/Q_ORC) is 0.52, the maximum output power and maximum thermal efficiency of the experimental system are 2933.7w and 24.68%, respectively. In this condition, the scale of TEG bottom cycle is 41 pieces, the ORC working fluid flow rate is 0.046 kg/s, and the ORC working medium evaporation pressure is 3 MPa.

中文翻译：

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基于TEG-ORC联合循环的船舶余热梯级利用新方法研究

为了实现各种船舶余热的高效梯级利用，提高船舶能效，满足国际新碳排放法规的严格要求，本文提出了一种TEG-ORC（热电发电/有机朗肯循环）联合循环，并设计了实验系统。以各底循环的耦合特性作为联合循环的切入点，采用系统仿真的方法，研究TEG/ORC底循环比、ORC工质流动的蒸发压力和流量对系统关键性能的影响研究了主机烟气的输出功率、系统热效率和余热利用率。结果表明TEG-ORC联合循环可以克服TEG或ORC的局限性，Q _TEG / Q _ORC )为0.52，实验系统的最大输出功率和最大热效率分别为2933.7w和24.68%。该工况下，TEG底循环规模为41个，ORC工质流速为0.046 kg/s，ORC工质蒸发压力为3 MPa。