TY - JOUR
TI - Reliability optimization design of intelligent mechanical structure for waste heat recovery
AU - Feng Xinyu
AU - Zhu Xijing
AU - Li Xiangmeng
JN - Thermal Science
PY - 2023
VL - 27
IS - 2
SP - 1083
EP - 1090
PT - Article
AB - In order to solve the problems of high energy consumption and serious waste  of heat energy in the cooling of traditional oil cooler in hydraulic system,  the author proposed the reliability optimization design of intelligent  mechanical structure for waste heat recovery. The author has built a waste  heat recovery test platform for hydraulic system, the influence of  electrical load, oil flow rate and working medium flow rate on system  operation and energy characteristics is studied. The experimental results  show that: under the same working condition, compared with the oil cooler of  the same specification, the maximum thermal efficiency of the proposed  organic Rankine cycle waste heat recovery system is increased to 2.56%. The  expander pressure ratio and system thermal efficiency increase with the  increase of electric load and oil flow rate. With the increase of the flow  rate of the working medium, the superheat of the working medium at the inlet  of the expander decreases significantly, while the heat exchange of the  evaporator and the output power of the expander increase. Under the test  condition, the maximum heat exchange of evaporator is 4.18 kW, and the  maximum output power of expander is 356 W. The energy saving effect of waste  heat recovery system of hydraulic system is obtained, and the influence law  of operation parameters on system performance is obtained.