| 摘要: |
| 本文以R11、R123、R245fa、R600及R600a作为有机朗肯循环工质，在低温余热热源温度一定时，分别在蒸发温度为85~145 ℃，冷凝温度为25~45 ℃工况下对系统进行热力性能研究，对比的性能参数包括：循环比功、比净功、系统热效率及系统?损失。结合有机工质的环保性、热物性及系统热经济性对工质进行综合评价，发现R600的?效率最高，不可逆损失最少，故选取R600作为工质最佳；蒸发温度为110~140 ℃，冷凝温度为25 ℃时，系统性能达到最优。 |
| 关键词: 有机朗肯循环 有机工质 性能参数 蒸发温度 冷凝温度 |
| DOI： |
| 投稿时间：2019-01-04 修订日期：2019-04-01
|
| 基金项目: |
|
| Effects of Working Fluids on Thermal Performance of Organic Rankine Cycle System |
|
Liu Qingqing, Tao Leren, Huang Lihao
|
| (School of Energy and Power Engineering, University of Shanghai for Science and Technology) |
| Abstract: |
| In the organic Rankine cycle system, the influence of different working fluids on the thermal performance of the system has always been an important direction of research. R11, R123, R245fa, R600 and R600a are used as organic Rankine cycle's working fluids in this paper, when the temperature of the low temperature waste heat source is constant, the system thermal performance was studied under the conditions of evaporation temperature of 85-145 ℃ and condensation temperature of 25-45 ℃. The comparative performance parameters include: cycle specific work, specific net work, system thermal efficiency, and system exergy loss. The working fluids were comprehensive evaluated in combination with environmental protection, thermal properties and system thermal economy of organic working fluids, the results showed that R600 had the highest efficiency and the least irreversible loss, so the refrigerant R600 is selected as the best working fluid. The optimal system performance reaches when the evaporation temperature is 110-140 ℃ and the condensation temperature is 25 ℃. |
| Key words: organic Rankine cycle organic working fluids performance parameters evaporation temperature condensation temperature |
