An Experimental Study on Waste Heat Recovery of Hydraulic System by Organic Rankine Cycle Method

doi:10.7652/xjtuxb202112002

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An Experimental Study on Waste Heat Recovery of Hydraulic System by Organic Rankine Cycle Method

更新时间：2025-07-09

- An Experimental Study on Waste Heat Recovery of Hydraulic System by Organic Rankine Cycle Method
- Vol. 55, Issue 12, Pages: 9-15(2021)
- 作者机构：
  
  1. 太原理工大学新型传感器与智能控制教育部与山西省重点实验室,太原,030024
  2. 太原工业学院机械工程系,太原,030008
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202112002
  CLC： TK11
- Online First：10 December 2021，
  
  Published：2021
- 稿件说明：
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An Experimental Study on Waste Heat Recovery of Hydraulic System by Organic Rankine Cycle Method[J]. 2021, 55(12): 9-15.
DOI：

An Experimental Study on Waste Heat Recovery of Hydraulic System by Organic Rankine Cycle Method[J]. 2021, 55(12): 9-15. DOI： 10.7652/xjtuxb202112002.

摘要

针对液压系统传统油冷器冷却时能耗大、热能浪费严重的问题

提出基于有机朗肯循环的液压系统余热回收利用方案

改善系统综合能效。建立了液压系统余热回收试验平台

研究电负载、油液流量和工质流量等参数对系统运行和能量特性的影响规律。试验结果表明:在相同工况下

与同等规格油冷器相比

所提有机朗肯循环余热回收系统最大热效率提高到了2.56%; 膨胀机压力比和系统热效率随电负载和油液流量增加而增加; 随着工质流量增大

膨胀机入口工质过热度显著降低

而蒸发器换热量和膨胀机输出功率增大。在试验工况下

蒸发器最大换热量为4.18 kW

膨胀机最大输出功率为356 W。试验结果验证了液压系统余热回收系统的节能效果

得到了运行参数对系统性能的影响规律。

Abstract

A scheme of waste heat recovery and utilization of hydraulic system based on organic Rankine cycle is proposed to solve the problems of high energy consumption and serious waste of heat energy during cooling of traditional oil coolers in hydraulic system and to improve the comprehensive energy efficiency of the system. A test platform for waste heat recovery of the hydraulic system is built to study the influences of electric load

oil flow rate

and flow rate of the working fluid on the system operation and energy characteristics. Experimental results show that

compared with the oil cooler of the same specification

the system' maximum thermal efficiency of the proposed scheme increases to 2.56% under the same working conditions. The pressure ratio of the expander and the thermal efficiency of the system increase with the increase of electric load and oil flow rate. With the increase of the flow rate of the working fluid

the superheat of the working fluid at the inlet of the expander decreases significantly

while the heat flow rate in the evaporator and the output power of the expander increase. Under the testing condition

the maximum heat flow rate in the evaporator is 4.18 kW

and the maximum output power of the expander is 356 W. The test results verify the energy saving effect of the waste heat recovery system of the hydraulic system

and reveal the influence laws of operating parameters on the system performance.

关键词

Keywords

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