Thermodynamic performance analysis of double pressure organic Rankine cycle driven by geotherm

被引：0
作者：
Liu X. [1 ]
Niu J. [1 ]
Wang J. [1 ]
Su L. [1 ]
Dong L. [1 ]
机构：
[1] Low and Medium Grade Energy of Ministry of Education, School of Mechanical Engineering, Tianjin University, Tianjin
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 09期
关键词：
Geothermal energy; Organic Rankine cycle; Ratio of high-pressure cycle heat; Running time; Thermodynamic performance;
D O I：
10.19912/j.0254-0096.tynxb.2021-0116
中图分类号：
学科分类号：
摘要：
According the requirement of system injection in geothermal utilization, the temperature of the heat source at the exit of the system is specified and 5 kinds of organic working medium with different critical temperatures are selected for thermodynamic calculation. The heat distribution and the performance of DPORC with running time were studied, and the results indicated that the maximum value of the thermodynamic parameters of the system and the minimum value of the flow of organic working medium were obtained at the same k(Ratio of heat provided by the heat source to the high- pressure cycle to heat provided by the heat source to DPORC)value. The net output power of system with R600 and R245fa as working fluid is larger. Compared with R601, the net output power of system with R245fa as fluid can increase by 168.06 kW(5.55%), while thermal efficiency and exergy efficiency can increase by 0.70% and 2.86% respectively. Compared with single- pressure organic(SPORC), DPORC can reduce the decrease of net output power with variable running time effectively. After 40 a of operation, R601 has the lowest net output power reduction(428.11 kW, 14.14%), while R600 has the highest net output power reduction(526.75 kW, 16.55%). © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
引用
收藏
页码：437 / 443
页数：6
相关论文
共 18 条
  • [1] LI J, GE Z, DUAN Y Y, Et al., Design and performance analyses for a novel organic Rankine cycle with supercritical-subcritical heat absorption process coupling, Applied energy, 235, pp. 1400-1414, (2019)
  • [2] ANDERSON A, REZAIE B., Geothermal technology: trends and potential role in a sustainable future, Applied energy, 248, pp. 18-34, (2019)
  • [3] ZHANG L X, PANG M Y, HAN J, Et al., Geothermal power in China: development and performance evaluation, Renewable and sustainable energy reviews, 116, (2019)
  • [4] YANG F B, CHO H J, ZHANG H G, Et al., Thermoeconomic multi-objective optimization of a dual loop organic Rankine cycle(ORC)for CNG engine waste heat recovery, Applied energy, 205, pp. 1100-1118, (2017)
  • [5] LUO X L, YI Z T, ZHANG B J, Et al., Mathematical modelling and optimization of the liquid separation condenser used in organic Rankine cycle, Applied energy, 185, pp. 1309-1323, (2017)
  • [6] BRAIMAKIS K, KARELLAS S., Exergetic optimization of double stage Organic Rankine Cycle(ORC), Energy, 149, pp. 296-313, (2018)
  • [7] LECOMPTE S, HUISSEUNE H, BROEK M V D, Et al., Review of organic Rankine cycle(ORC)architectures for waste heat recovery, Renewable and sustainable energy reviews, 47, pp. 448-461, (2015)
  • [8] LI J, GE Z, DUAN Y Y, Et al., Parametric optimization and thermodynamic performance comparison of singlepressure and dual-pressure evaporation organic Rankine cycles, Applied energy, 217, pp. 409-421, (2018)
  • [9] WANG M T, CHEN Y G, LIU Q Y, Et al., Thermodynamic and thermo-economic analysis of dual-pressure and single pressure evaporation organic Rankine cycles, Energy conversion management, 177, pp. 718-736, (2018)
  • [10] ZHAI H X, AN Q S, SHI L, Et al., Categorization and analysis of heat sources for organic Rankine cycle systems, Renewable and sustainable energy reviews, 64, pp. 790-805, (2016)
12