Performance Analysis of Direct Contact Spray Condensor at Geothermal Power Plant

Djoeli Satrijo; Ojo kurdi; Toni Prahasto; Bintang Gilang Muharram; Ian Yulianti

doi:https://doi.org/10.47001/ICJES/2025.405001

Authors

Djoeli Satrijo

Mechanical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Tembalang-Semarang 50275, Indonesia

Ojo kurdi

Mechanical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Tembalang-Semarang 50275, Indonesia

Toni Prahasto

Mechanical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Tembalang-Semarang 50275, Indonesia

Bintang Gilang Muharram

Mechanical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Sudharto, SH., Tembalang-Semarang 50275, Indonesia

Ian Yulianti

Physics Study Program, Universitas Negeri Semarang, Central Java, Indonesia

Abstract

Geothermal Power Plants utilize geothermal energy to generate electricity through steam turbines. A direct contact condenser is employed to convert exhaust steam from the turbine into water by means of condensation using sprayed cooling water. This report presents a thermal performance analysis of the direct contact condenser at Geothermal Power Plant, focusing on heat transfer effectiveness based on parameters such as the mass flow rates of steam, cooling water, and condensate. Calculations were performed to determine the condenser’s efficiency using daily operational data. The analysis revealed an average condenser efficiency of 78.51%, with a maximum of 84.04% and a minimum of 72.05%. Factors such as ambient temperature and cooling water flow rate significantly influence condenser performance. This evaluation is crucial for enhancing the overall efficiency of the power generation system at the Geothermal Power Plant.

Keywords

Condenser Direct Contact Condenser Geothermal Power Plant Efficiency

Citation of this Article

Djoeli Satrijo, Ojo kurdi, Toni Prahasto, Bintang Gilang Muharram, & Ian Yulianti. (2025). Performance Analysis of Direct Contact Spray Condensor at Geothermal Power Plant. International Current Journal of Engineering and Science - ICJES, 4(5), 1-6. Article DOI: https://doi.org/10.47001/ICJES/2025.405001

References

D. Ridho Zuchrillah, R. Handogo, T. Kimia, F. Teknologi Industri, and I. Surabaya, ‘PEMILIHAN TEKNOLOGI PROSES GEOTHERMAL SECARA TEKNIS PADA PEMBANGKIT LISTRIK TENAGA PANAS BUMI DI INDONESIA’, Dec. 2017.
D. K. S. Sarkar, Thermal Power Plant. Elsevier, 2015. doi: 10.1016/C2014-0-00536-9.
T. Zakaria and T. Suryaman, ‘ANALISA KERUSAKAN KONDENSOR UNIT 1-4 PLTU-XYZ BANTEN (AN ENGINEERING REPORT CASE STUDY)’, Aug. 2020. [Online]. Available: https://imambudiraharjo.wordpress.com/2009/03/06/teknologi-pembakaran-pada-pltu-
M. Qarinur, S. Ogata, N. Kinoshita, and H. Yasuhara, ‘Predictions of Rock Temperature Evolution at the Lahendong Geothermal Field by Coupled Numerical Model with Discrete Fracture Model Scheme’, Energies (Basel), vol. 13, p. 3282, Jun. 2020, doi: 10.3390/en13123282.
R. K. Kapooria, S. Kumar, and K. S. Kasana, ‘Technological investigations and efficiency analysis of a steam heat exchange condenser: conceptual design of a hybrid steam condenser’, Journal of Energy in Southern Africa, vol. 19, no. 3, pp. 35–45, Aug. 2008, doi: 10.17159/2413-3051/2008/v19i3a3327.
Rio Panji Wicaksono, ‘Perancangan jet condensor untuk kondensasi uap pan masak di Pabrik Gula’, Jurnal Pengelolaan Perkebunan (JPP), vol. 3, no. 2, pp. 75–81, Sep. 2022, doi: 10.54387/jpp.v3i2.19.
A.Samnani, ‘Screening Criteria Required for Conversion of Abandoned Oil and Gas Wells into Geothermal Wells’, Int J Res Appl Sci Eng Technol, vol. 7, pp. 1555–1559, Jun. 2019, doi: 10.22214/ijraset.2019.6263.
M. El Haj Assad, E. Banihani, and M. Khalil, ‘Performance of geothermal power plants (single, dual, and binary) to compensate for LHC‑CERN power consumption: comparative study’, Geothermal Energy, vol. 5, Sep. 2017, doi: 10.1186/s40517-017-0074-z.
A.Asof, N. Pasra, and T. Hidayat, ‘Kajian Gas Removal System dengan Memanfaatkan Second Ejector dan Men-Stanby-Kan Liquid Ring Vacuum Pump pada Sub Unit Darajat, UPJP Kamojang’, Power Plant, vol. 4, no. 1, pp. 21–26, 2016, doi: 10.33322/powerplant.v4i1.830.

[1] D. Ridho Zuchrillah, R. Handogo, T. Kimia, F. Teknologi Industri, and I. Surabaya, ‘PEMILIHAN TEKNOLOGI PROSES GEOTHERMAL SECARA TEKNIS PADA PEMBANGKIT LISTRIK TENAGA PANAS BUMI DI INDONESIA’, Dec. 2017.

[2] D. K. S. Sarkar, Thermal Power Plant. Elsevier, 2015. doi: 10.1016/C2014-0-00536-9.

[3] T. Zakaria and T. Suryaman, ‘ANALISA KERUSAKAN KONDENSOR UNIT 1-4 PLTU-XYZ BANTEN (AN ENGINEERING REPORT CASE STUDY)’, Aug. 2020. [Online]. Available: https://imambudiraharjo.wordpress.com/2009/03/06/teknologi-pembakaran-pada-pltu-

[4] M. Qarinur, S. Ogata, N. Kinoshita, and H. Yasuhara, ‘Predictions of Rock Temperature Evolution at the Lahendong Geothermal Field by Coupled Numerical Model with Discrete Fracture Model Scheme’, Energies (Basel), vol. 13, p. 3282, Jun. 2020, doi: 10.3390/en13123282.

[5] R. K. Kapooria, S. Kumar, and K. S. Kasana, ‘Technological investigations and efficiency analysis of a steam heat exchange condenser: conceptual design of a hybrid steam condenser’, Journal of Energy in Southern Africa, vol. 19, no. 3, pp. 35–45, Aug. 2008, doi: 10.17159/2413-3051/2008/v19i3a3327.

[6] Rio Panji Wicaksono, ‘Perancangan jet condensor untuk kondensasi uap pan masak di Pabrik Gula’, Jurnal Pengelolaan Perkebunan (JPP), vol. 3, no. 2, pp. 75–81, Sep. 2022, doi: 10.54387/jpp.v3i2.19.

[7] A.Samnani, ‘Screening Criteria Required for Conversion of Abandoned Oil and Gas Wells into Geothermal Wells’, Int J Res Appl Sci Eng Technol, vol. 7, pp. 1555–1559, Jun. 2019, doi: 10.22214/ijraset.2019.6263.

[8] M. El Haj Assad, E. Banihani, and M. Khalil, ‘Performance of geothermal power plants (single, dual, and binary) to compensate for LHC‑CERN power consumption: comparative study’, Geothermal Energy, vol. 5, Sep. 2017, doi: 10.1186/s40517-017-0074-z.

[9] A.Asof, N. Pasra, and T. Hidayat, ‘Kajian Gas Removal System dengan Memanfaatkan Second Ejector dan Men-Stanby-Kan Liquid Ring Vacuum Pump pada Sub Unit Darajat, UPJP Kamojang’, Power Plant, vol. 4, no. 1, pp. 21–26, 2016, doi: 10.33322/powerplant.v4i1.830.