International Research Journal of Innovations in Engineering and Technology - IRJIET International Open Access, Monthly, Peer Reviewed, Reputed Journal ISSN (online): 2581-3048

Impact Factor (2025): 6.9

DOI Prefix: 10.47001/IRJIET

Analysis Energy and Exergy Residual Heat Utilization with additional Preheater in Organic Rankine Cycle

Abstract

On this paper, ORC thermal efficiency increased 22.54%, ORC utilization increased 22.79%, and ORC Exergetic efficiency increased 22.78% from the HMB design. Author has analysis to change the specification of Feed Pump, and additional Preheater, result analysis, when increasing n-pentane flow rate and saturation temperature, the heat (Q) flowing into the reinjection well decreased from 52502.9 kW to 23488.17 kW, and exergy destruction decreased from 28536 kW to 20427 kW where this exergy injected into the reinjection well, means that some energy and exergy has been utilized before being flowed into the reinjection system. On the Turbine, increase in Gross Power (WTurbine) 25.40% with gross power modification 17418 kW from Gross Power 13890 kW and increase net power 15102 kW and 12050 kW. In the ACHE, increase heat (Q) 27.10% from 76030 kW to 96633 kW which need to cool n-pentane, increase in heat (Q) followed by increasing in power Fan motor 14.66% where the air flow rate increases from 218798 ACFM to 294442 ACFM which need to cooled n-pentane. The power of the Feed pump increases 31.69% to 1600 kW from 1215 kW, this is because change in impeller diameter causes an increase in flowrate, pressure and motor power need to rotate the pump. On the Recuperator there is decrease in work (Q) 47.93%, this is because heating n-pentane to reach saturation temperature assisted by the presence of an additional preheater.

Country : Indonesia

1 Iwan Gunawan2 Berkah Fajar3 Udi Harmoko

  1. Magister Energy, Sekolah Pascasarjana, Universitas Diponegoro, Semarang, Indonesia
  2. Magister Energy, Sekolah Pascasarjana, Universitas Diponegoro, Semarang, Indonesia
  3. Magister Energy, Sekolah Pascasarjana, Universitas Diponegoro, Semarang, Indonesia

IRJIET, Volume 8, Issue 9, September 2024 pp. 183-193

doi.org/10.47001/IRJIET/2024.809023

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References

  1. Bonalumi, D., Bombarda, P., & Invernizzi, C. (2017). Potential performance of environmental friendly application of ORC and Flash technology in geothermal power plants. Energy Procedia, 129, 621–628. https://doi.org/10.1016/j.egypro.2017.09.114
  2. Ahmadi, A., El Haj Assad, M., Jamali, D. H., Kumar, R., Li, Z. X., Salameh, T., Al-Shabi, M., &Ehyaei, M. A. (2020). Applications of geothermal organic Rankine Cycle for electricity production. Journal of Cleaner Production, 274. https://doi.org/10.1016/j.jclepro.2020.122950
  3. Guo, T., Wang, H. X., & Zhang, S. J. (2011). Fluids and parameters optimization for a novel cogeneration system driven by low-temperature geothermal sources. Energy, 36(5), 2639–2649. https://doi.org/10.1016/j.energy.2011.02.005
  4. Van Erdeweghe, S., Van Bael, J., Laenen, B., & D’haeseleer, W. (2017). “Preheat-parallel” configuration for low-temperature geothermally-fed CHP plants. Energy Conversion and Management, 142, 117–126. https://doi.org/10.1016/j.enconman.2017.03.022
  5. Sun, Q., Wang, Y., Cheng, Z., Wang, J., Zhao, P., & Dai, Y. (2020). Thermodynamic and economic optimization of a double-pressure organic Rankine cycle driven by low-temperature heat source. Renewable Energy, 147, 2822–2832. https://doi.org/10.1016/j.renene.2018.11.093.
  6. Jiang, L., Lu, H. T., Wang, L. W., Gao, P., Zhu, F. Q., Wang, R. Z., & Roskilly, A. P. (2017). Investigation on a small-scale pumpless Organic Rankine Cycle (ORC) system driven by the low temperature heat source. Applied Energy, 195, 478–486. https://doi.org/10.1016/j.apenergy.2017.03.082.
  7. He, Z., Zhang, Y., Dong, S., Ma, H., Yu, X., Zhang, Y., Ma, X., Deng, N., & Sheng, Y. (2017). Thermodynamic analysis of a low-temperature organic Rankine cycle power plant operating at off-design conditions. Applied Thermal Engineering, 113, 937–951. https://doi.org/10.1016/j.applthermaleng.2016.11.006
  8. Zhang, M. G., Zhao, L. J., & Xiong, Z. (2017). Performance evaluation of organic Rankine cycle systems utilizing low grade energy at different temperature. Energy, 127, 397–407. https://doi.org/10.1016/j.energy.2017.03.125
  9. Quoilin, S., Broek, M. Van Den, Declaye, S., Dewallef, P., &Lemort, V. (2013). Techno-economic survey of organic rankine cycle (ORC) systems. In Renewable and Sustainable Energy Reviews (Vol. 22, pp. 168–186). https://doi.org/10.1016/j.rser.2013.01.028.
  10. Grassiani, M. (2000). Siliceous Scaling Aspects Of Geothermal Power Generation Using Binary Cycle Heat Recovery.
  11. Franco, A., & Villani, M. (2009). Optimal design of binary cycle power plants for water-dominated, medium-temperature geothermal fields. Geothermics, 38(4), 379–391. https://doi.org/10.1016/j.geothermics.2009.08.001.

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