制冷技术2024，Vol.44Issue(1)：1-6,38,7.DOI:10.3969/j.issn.2095-4468.2024.01.101
热重力驱动的无泵有机朗肯循环系统的实验研究
Experimental Study on Thermal-gravity Driven Pumpless Organic Rankine Cycle System
缪若松 1朱涵玉 1张雪峰 1王紫璇 1王丽伟1
作者信息
- 1. 上海交通大学制冷与低温工程研究所,上海 200240
- 折叠
摘要
Abstract
In order to improve distributed energy efficiency,an experimental study on the pumpless Organic Rankine Cycle(ORC)driven by thermal-gravity is proposed.In this paper,the working principle and performance of multi-stage liquid pumping process are studied by combining simulation and experiment.An experimental system with two two-stage liquid pumping processes and preheating mode is built,and the system performance under different working conditions is analyzed.Results show that the liquid pumping processes have little influence on the pressure at the inlet of the expander,and meanwhile it can effectively increase the pressure of the fluid and realize the pressurized flowing process.The average power generation of the system is 194.5 W,the instantaneous thermal efficiency fluctuates between 2.2%-3.8%,and the average thermal efficiency and exergy efficiency are 3.0%and 11.8%,respectively.For the large-scale power generation system,considering that the large tank could realize the large flowrate for the liquid pumping process,the single stage liquid pumping process is adopted for the large-scale power generation system,and two tanks in parallel is utilized to ensure the continuous liquid supply.When the temperature of heating source and cooling source is 98.3℃and 21.5℃,the average power generation power reaches 8.8 kW,and the average thermal efficiency and exergy efficiency are 3.98%and 20.95%,separately.关键词
热重力/无泵/有机朗肯循环/发电量/热效率Key words
Thermal-gravity/Pumpless/Organic Rankine Cycle/Power generation/Thermal efficiency分类
信息技术与安全科学引用本文复制引用
缪若松,朱涵玉,张雪峰,王紫璇,王丽伟..热重力驱动的无泵有机朗肯循环系统的实验研究[J].制冷技术,2024,44(1):1-6,38,7.
