Parameter optimization on low-temperature reheating organic Rankine cycle

WANG Zhi; YU Yida; HAN Zhonghe; DU Yan School of Energy

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Parameter optimization on low-temperature reheating organic Rankine cycle

Thermal Power Generation Vol. 42, Issue 5, Pages: 22-29(2013)

更新时间：2025-09-28

- Parameter optimization on low-temperature reheating organic Rankine cycle
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK123
- Published：2013
- 稿件说明：
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WANG Zhi, YU Yida, HAN Zhonghe, et al. Parameter optimization on low-temperature reheating organic Rankine cycle[J]. Thermal Power Generation, 2013, 42(5): 22-29.
DOI：

WANG Zhi, YU Yida, HAN Zhonghe, et al. Parameter optimization on low-temperature reheating organic Rankine cycle[J]. Thermal Power Generation, 2013, 42(5): 22-29. DOI：

摘要

以R601和R245ca作为循环工质

根据热力学第一定律和第二定律

研究了再热压力比对低温再热式有机朗肯循环(ORC)系统的影响。通过MATLAB和REF-PROP软件编程计算

以系统净功量为目标函数

确定系统的最佳再热压力比。分析结果表明

随着蒸发温度的升高

再热压力比逐渐减小

净功量逐渐增加

热效率逐渐升高

火用效率逐渐减小

净功量的增加幅度大于热效率。在实际应用中

应根据工质及蒸发温度确定最佳参数

从而确定再热式有机朗肯循环的最大净功量。

Abstract

By taking R601 and R245ca as the cycle working fluid

the influence of reheat pressure ratio on low-temperature reheating organic Rankine cycle(ORC) system was investigated

on the basis of the first and second law of thermodynamics.Combined with programming through MATLAB and BEFPROP

the system net work was taken as the objective function to determine the optimal reheat pressure ratio.The results showed that

with an increase in evaporation temperature

the reheat pressure ratio gradually reduced while the system net work increased;the heat efficiency rose but the exergy efficiency decreased.The increase range of system net work was higher than that of the heat efficiency and exergy efficiency.In practical application

the maximum net work of the reheating ORC system should be ascertained according to the working fluid and evaporation temperature.

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