RESEARCH ON DIFFERENT BOTTOM CYCLE RATIOS AND SUPERHEAT CONDITION OUTPUT PERFORMANCE OF TEG-ORC COMBINED CYCLE FOR SHIP WASTE HEAT RECOVERY

Sun Deping; Li Yiran; Qiao Guangchao; Shi Feixiong; Feng Xing; Liu Changxin

doi:10.19912/j.0254-0096.tynxb.2023-1967

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (3) : 73-82. DOI: 10.19912/j.0254-0096.tynxb.2023-1967

RESEARCH ON DIFFERENT BOTTOM CYCLE RATIOS AND SUPERHEAT CONDITION OUTPUT PERFORMANCE OF TEG-ORC COMBINED CYCLE FOR SHIP WASTE HEAT RECOVERY

Sun Deping, Li Yiran, Qiao Guangchao, Shi Feixiong, Feng Xing, Liu Changxin

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Abstract

This paper selects R245fa as the ORC bottom cycle working fluid and compares the system performance in saturated steam and superheated steam states. The paper also studies the impact of changes in TEG/ORC bottom cycle ratio on system performance under specific superheat conditions. Experimental results indicate that in the TEG-ORC combined cycle, increasing the working fluid’s superheat can enhance system output power. In the working fluid’s superheated state, increasing the bottoming cycle ratio boosts the combined cycle system's output power,lowers generation costs,and elevates working fluid flow rate,collectively enhancing the performance of the combined cycle system.

Key words

vessels waste heat / cascade recovery / superheated steam states / TEG-ORC combined cycle / bottom cycle ratios

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Sun Deping, Li Yiran, Qiao Guangchao, Shi Feixiong, Feng Xing, Liu Changxin. RESEARCH ON DIFFERENT BOTTOM CYCLE RATIOS AND SUPERHEAT CONDITION OUTPUT PERFORMANCE OF TEG-ORC COMBINED CYCLE FOR SHIP WASTE HEAT RECOVERY[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 73-82 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1967

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