Experimental study on Organic Rankine Cycle for waste heat recovery from low-temperature flue gas
Experimental study on Organic Rankine Cycle for waste heat recovery from low-temperature flue gas
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DOI：
10.1016/j.energy.2013.03.047
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发表时间：
2013-06
期刊：
影响因子：
9
通讯作者：
Naijun Zhou;Xiao-yuan Wang;Zhuo Chen;Zhi-qi Wang
中科院分区：
文献类型：
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作者：
Naijun Zhou;Xiao-yuan Wang;Zhuo Chen;Zhi-qi Wang
搭建了基于有机朗肯循环（ORC）的低温烟气余热回收实验系统。该系统选用R123作为工质，采用涡旋膨胀机做功，翅片管换热器作为蒸发器。采用液化石油气（LPG）炉产生的低温烟气作为热源模拟工业烟气，温度可控制在90~220℃范围内。研究了系统的输出性能与蒸发压力、热源温度以及工质过热度的关系。结果表明，在热源一定温度下，随着蒸发压力的增大，循环效率、膨胀机输出功率和放热效率增大，而热回收效率减小。工质过热度对系统输出参数影响较小。在本实验条件下，膨胀机的最大输出功率为645 W，循环效率和热回收效率分别为8.5%和22%。
An experimental system for heat recovery from low-temperature flue gas based on Organic Rankine Cycle (ORC) was constructed. In the system, R123 was selected as working fluid, a scroll expander was used to produce work, and fin tubes heat exchanger was designed as evaporator. Low-temperature flue gas produced by an liquefied petroleum gas (LPG) stove was used as the heat source to simulate industrial flue gas, and its temperature can be controlled in the range of 90–220 °C. Relationships between output performance of the system and the evaporating pressure, temperature of the heat source as well as the superheat degree of the working fluid were investigated. The results show that the cycle efficiency, the output power of the expander and its exergetic efficiency increase whilst the heat recovery efficiency decreases with the increment of the evaporating pressure at a certain temperature of the heat source. The influence of the superheat degree of the working fluid on the system output parameters is slight. Under the present experimental conditions, the maximum output power of the expander is 645 W, and the cycle efficiency and the heat recovery efficiency are 8.5% and 22%, respectively.