Advanced Exergy and Advanced Exergy Economic Analysis of Double- stage Evaporation Double-regenerative Organic Rankine Cycle Based on Geothermal Energy

摘要: 双级蒸发有机朗肯循环(Organic rankine cycle,ORC)能有效提高热源利用效率,回热-ORC能有效利用膨胀机排出余热,结合两者优点,提出双级蒸发双回热有机朗肯循环系统(Double-stage evaporation and double recuperation Organic rankine cycle,DEDR-ORC)。常规㶲法侧重于独立组件的㶲损失,无法识别系统组件之间的相互作用对系统性能的实际影响,提出高级㶲和高级㶲经济法对DEDR-ORC进行分析。探讨DEDR-ORC的先进性、组件㶲损失和组件之间相互作用关系和组件的实际改进潜力。结果表明:DEDR-ORC的㶲效率和净输出功相对双级蒸发-ORC和回热-ORC最大提高了27.24%和4 436.97 kW,平准化电能成本降低了0.006 。常规㶲法得到膨胀机和冷凝器的㶲损失最大为755.15 kW和567.20 kW,高级㶲法得到膨胀机、冷凝器和蒸发器1总可避免㶲损失为553.28 kW、223 kW、103.20 kW,其组件改进潜力依据总可避免㶲损失大小排序,因此,膨胀机、冷凝器和蒸发器1改进潜力最大。高级㶲经济法得到膨胀机、蒸发器1、混合回热器的总可避免成本为71.16 $/h、1.14 $/h、0.94 $/h,均为正值,其余组件均为负值,其降低成本的改进潜力仅有膨胀机、蒸发器1和混合回热器,其余组件无改进潜力。研究结果可为ORC系统设计及优化提供理论支撑与技术参考。

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Publication Details

Journal
Journal of Mechanical Engineering
Published
2025-01-01
DOI
https://doi.org/10.3901/jme.2025.14.285
Primary Topic
Thermodynamic and Exergetic Analyses of Power and Cooling Systems
Type
article
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article

Advanced Exergy and Advanced Exergy Economic Analysis of Double- stage Evaporation Double-regenerative Organic Rankine Cycle Based on Geothermal Energy

Journal of Mechanical Engineering
Thermodynamic and Exergetic Analyses of Power and Cooling Systems
article

Advanced Exergy and Advanced Exergy Economic Analysis of Double- stage Evaporation Double-regenerative Organic Rankine Cycle Based on Geothermal Energy

article en

Abstract

摘要: 双级蒸发有机朗肯循环(Organic rankine cycle,ORC)能有效提高热源利用效率,回热-ORC能有效利用膨胀机排出余热,结合两者优点,提出双级蒸发双回热有机朗肯循环系统(Double-stage evaporation and double recuperation Organic rankine cycle,DEDR-ORC)。常规㶲法侧重于独立组件的㶲损失,无法识别系统组件之间的相互作用对系统性能的实际影响,提出高级㶲和高级㶲经济法对DEDR-ORC进行分析。探讨DEDR-ORC的先进性、组件㶲损失和组件之间相互作用关系和组件的实际改进潜力。结果表明:DEDR-ORC的㶲效率和净输出功相对双级蒸发-ORC和回热-ORC最大提高了27.24%和4 436.97 kW,平准化电能成本降低了0.006 。常规㶲法得到膨胀机和冷凝器的㶲损失最大为755.15 kW和567.20 kW,高级㶲法得到膨胀机、冷凝器和蒸发器1总可避免㶲损失为553.28 kW、223 kW、103.20 kW,其组件改进潜力依据总可避免㶲损失大小排序,因此,膨胀机、冷凝器和蒸发器1改进潜力最大。高级㶲经济法得到膨胀机、蒸发器1、混合回热器的总可避免成本为71.16 $/h、1.14 $/h、0.94 $/h,均为正值,其余组件均为负值,其降低成本的改进潜力仅有膨胀机、蒸发器1和混合回热器,其余组件无改进潜力。研究结果可为ORC系统设计及优化提供理论支撑与技术参考。

Journal of Mechanical EngineeringVol. 61(14)
Liaoning Technical University (CN)
Openalex Percentile: Top 58%
Thermodynamic and Exergetic Analyses of Power and Cooling Systems
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