低温发电有机朗肯循环系统性能实验研究

• 作 者: 潘利生 王怀信 郭东奇
• 机 构: 天津大学热能与制冷工程系,
• 出 处: 工程热物理学报
• 发表日期: 2013年10期
• 关键词: organic Rankine cycle (ORC) radial turbine nozzle evaporation pressure experimen

基于进口温度为90℃的热水型低温热源,以HFC245fa为工质,以单位热水质量流量对应的发电功率(比电功)最大化为目标函数,开展了以小型辐流式汽轮机为膨胀部件的低温发电有机朗肯循环实验系统性能优化研究。结果表明:在热源进口温度为90℃、冷凝温度为30℃的工况下,采用渐缩喷管时,蒸发压力为0.596 MPa(蒸发温度为69.16℃)时比电功达到最大值1.28 kJ/kg;采用缩放喷管时,蒸发压力为0.698 MPa(蒸发温度为75.16℃)时比电功达到最大值0.87 kJ/kg。

Based on the hot-water low temperature heat source with inlet temperature of 90 ℃ and HFC245fa as the working fluid, the objective function is to maximize the generated power (specific electromotive force) corresponding to the mass flow rate of unit hot water and carry out the expansion with small radial turbine Research on Performance Optimization of Organic Rankine Cycle Experimental System for Low Temperature Power Generation of Components. The results show that when the inlet temperature of the heat source is 90 ℃ and the condensing temperature is 30 ℃, the maximum specific electrical power is reached at the evaporating pressure of 0.596 MPa (evaporating temperature 69.16 ℃) with the tapering nozzle reaching 1.28 kJ / kg; when using a scaled nozzle, the maximum value of electric power is 0.87 kJ / kg when the evaporation pressure is 0.698 MPa (evaporation temperature is 75.16 ℃).