Thermal Effectiveness Analysis of Lube Oil Cooler Fan with Capacity of 40.332 Kg/S with Pressure of 5 Bar

Angga Bahri Pratama; Abdul  Razak; Sahat Sahat; Nelson  Manurung; Berta Br  Ginting; Franklin Taruyun Hudeardo  Sinaga; Zumhari Zumhari

doi:10.37899/journallamultiapp.v7i3.841

Angga Bahri Pratama Program Studi Teknik Konversi Energi, Jurusan Teknik Mesin, Politeknik Negeri Medan, Jl. Almamater No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia
Abdul Razak Program Studi Teknik Konversi Energi, Jurusan Teknik Mesin, Politeknik Negeri Medan, Jl. Almamater No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia
Sahat Program Studi Teknik Mesin, Jurusan Teknik Mesin, Politeknik Negeri Medan, Jl. Almamater No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia
Nelson Manurung Program Studi Teknik Mesin, Jurusan Teknik Mesin, Politeknik Negeri Medan, Jl. Almamater No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia
Berta Br Ginting Program Studi Teknologi Rekayasa Manufaktur, Jurusan Teknik Mesin, Politeknik Negeri Medan, Jl. Almamater No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia
Franklin Taruyun Hudeardo Sinaga Program Studi Teknik Mesin, Jurusan Teknik Mesin, Politeknik Negeri Medan, Jl. Almamater No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia
Zumhari Program Studi Teknik Elektronika, Jurusan Teknik Elektro, Politeknik Negeri Medan, Jl. Almamater No.1, Padang Bulan, Kec. Medan Baru, Medan, Sumatera Utara 20155, Indonesia

DOI: https://doi.org/10.37899/journallamultiapp.v7i3.841

Keywords: Thermal Effectiveness, Lube Oil Cooler, Heat Exchanger, Gas Turbine, Cooling System

Abstract

The Lube Oil Cooler Fan is an essential component in the lubrication system of a gas turbine because it maintains lubricating oil temperature within a safe operating range. This study aims to analyze the thermal performance and effectiveness of the Lube Oil Cooler Fan on Gas Turbine GT 1.1 at PT XYZ. The study employed a descriptive quantitative approach using field observation data and heat transfer calculations. The analysis was conducted through the Log Mean Temperature Difference method and heat exchanger effectiveness approach by considering fluid temperature changes, mass flow rates, thermophysical properties, flow characteristics, convective heat transfer coefficients, overall heat transfer coefficient, heat transfer rate, and thermal effectiveness. The results show that the lubricating oil temperature decreased from 61°C to 49°C, while the cooling air temperature increased from 32°C to 53.5°C. The tube side heat transfer coefficient was 40.71 W/m²°C, the shell side heat transfer coefficient was 308 W/m²°C, and the overall heat transfer coefficient was 30.61 W/m²°C. The calculated heat transfer rate was 992.57 W or approximately 0.993 kW. The lubricating oil was identified as the minimum heat capacity fluid, with a heat capacity rate of 33.13 kW/°C. The thermal effectiveness of the Lube Oil Cooler Fan was 41.4%, indicating that the cooler was able to perform its cooling function, although its performance remained moderate. Routine monitoring, stable airflow control, and periodic cleaning are recommended to improve thermal performance.

References

Andriani, G., Pio, G., Salzano, E., Vianello, C., & Mocellin, P. (2025). Evaluating the thermal stability of chemicals and systems: A review. The Canadian Journal of Chemical Engineering, 103(1), 42-62.

Bahri Pratama, A., Qadry, A., Fan Saragi, JH, Putra Dairi Boangmanalu, E., & Taruyun Hudeardo Sinaga, F. (2023). Analysis Efficiency and Effectiveness of Heat Transfer Rate in Double Pipe Type Heat Exchanger with Direct Current . Mesil Journal ( Electro Civil Machines ) , 04 (02).

Banihabib, R., Lingstädt, T., Wersland, M., Kutne, P., & Assadi, M. (2024). Development and testing of a 100 kW fuel-flexible micro gas turbine running on 100% hydrogen. International Journal of Hydrogen Energy, 49, 92-111. https://doi.org/10.1016/j.ijhydene.2023.06.317

Barmavatu, P., Heeraman, J., Das, M. K., Mangalaraja, R. V., & Srinivasnaik, M. (2026). Synergistic integration of micro-channels and thermal storage systems for energy efficiency enhancement in heat transfer applications-a critical review. Journal of Thermal Analysis and Calorimetry, 1-23. https://doi.org/10.1007/s10973-025-15165-w

Bhattad, A., Atgur, V., Rao, B. N., Banapurmath, N. R., Manavendra, G., Sajjan, A. M., ... & Hussien, M. (2024). A simplified LMTD approach to assess the effectiveness of a chevron-type plate heat exchanger. Journal of Thermal Analysis and Calorimetry, 149(21), 12205-12217. https://doi.org/10.1007/s10973-024-13573-y

Egeten , HSF, Sappu , FP, & Maluegha , B. (2014). EFFECTIVENESS OF PLATE TYPE HEAT EXCHANGER P41 73TK AT LAHENDONG PLTP UNIT 2. Online Journal of Mechanical Engineering Poros , 3 (1).

Fauziyyah , AD, & Nashira, A. (2025). ANALYSIS OF HEAT TRANSFER EFFICIENCY IN GAS COOLER IN OIL AND GAS SEPARATION FACILITY OF COMPANY X. RAPI National Symposium .

Gao, C., Huang, Z., Yu, A., Xiao, H., & Zhang, Z. (2026). Similarity theory-driven dimensionless parameter migration framework: Digital twin approach for cross-condition gas turbine performance monitoring. Applied Thermal Engineering, 129712. https://doi.org/10.1016/j.applthermaleng.2026.129712

Hatte, S., Stoddard, R., & Pitchumani, R. (2022). Generalized analysis of dynamic flow fouling on heat transfer surfaces. International Journal of Heat and Mass Transfer, 188, 122573.

Huang, T., Huang, X., Xiaoming, F., Ziye, L., & Zhang, Z. (2026). Research Progress on Thermophysical Properties and Convection Heat Transfer Enhancement of Molten Salts. Energies, 19(5), 1230. https://doi.org/10.3390/en19051230

Ilyunin, O., Bezsonov, O., Rudenko, S., Serdiuk, N., Udovenko, S., Kapustenko, P., ... & Arsenyeva, O. (2024). The neural network approach for estimation of heat transfer coefficient in heat exchangers considering the fouling formation dynamic. Thermal Science and Engineering Progress, 51, 102615. https://doi.org/10.1016/j.tsep.2024.102615

Irannezhad, N., Rossetto, L., & Diani, A. (2025). Optimization considerations in the design of shell and tube condensers implementing enhanced tubes: Experimental and theoretical analysis. Applied Thermal Engineering, 273, 126408.

Julius, O. I., Kwelle, S. H., & Johnson, N. (2025). Unlocking the Functional Mechanics of Gas Turbine Plants: Enhancing Reliability, Efficiency, and Environmental Sustainability. Jurnal Teknik Indonesia, 4(02), 56-121.

Khroufi, K., Mokhnache, K., & Djafer, A. (2025). How students can master the concept of heat exchangers. South Florida Journal of Development, 6(5), e5368-e5368. https://doi.org/10.46932/sfjdv6n5-089

Kindra, V. O., Rogalev, A. N., Kovalev, D. S., Ilin, I. V., & Levina, A. I. (2025). Research and development of high temperature gas-cooled reactor nuclear power plants for combined production of electricity, heat and hydrogen. International Journal of Hydrogen Energy, 148, 149968. https://doi.org/10.1016/j.ijhydene.2025.06.158

Kumar, D. V., Vijayaraghavan, S., & Thakur, P. (2022). Analytical and experimental investigation on heat transfer and flow parameters of Multichannel louvered fin cross flow heat exchanger using iterative LMTD and∊-NTU method. Materials Today: Proceedings, 52, 1240-1248. https://doi.org/10.1016/j.matpr.2021.11.045

Kumar, S., Rathore, K., Sahu, M. K., Sharma, M. P., Mishra, K. N., & Banerjee, D. (2025). Heat Exchanger Classifications and Their Areas of Application. In Advanced Applications in Heat Exchanger Technologies (pp. 30-63). CRC Press.

Lv, X., Hong, P., Wen, J., Ma, Y., Spataru, C., & Weng, Y. (2025). Highly efficient operation of an innovative SOFC powered all-electric ship system using quick approach for ammonia to hydrogen. Frontiers in Energy, 19(3), 365-381. https://doi.org/10.1007/s11708-025-0974-8

Mahay, N., & Yadav, R. K. (2025). Experimental study on hydro-thermal behavior of water, ethylene glycol-based Cu/Ni bi-metallic nanofluid in an air-finned cross-flow heat exchanger. Journal of Thermal Analysis and Calorimetry, 150(18), 14403-14421. https://doi.org/10.1007/s10973-025-14333-2

Marzouk, S. A., Abou Al-Sood, M. M., El-Said, E. M., Younes, M. M., & El-Fakharany, M. K. (2025). Comprehensive review of heat transfer enhancement through constructal theory. Journal of Thermal Analysis and Calorimetry, 150(22), 18089-18127. https://doi.org/10.1007/s10973-025-14630-w

Maulana, F., & Lesmana, IGE (2021). Analysis Improvement Effectiveness of Exchange Tool Calories Plate Type After Cleaning of Turbine Cooling Oil System . SEMNASTERA .

Naidu, S. S., Korapati, P., Trisha, N., Vedadri, G., & Jahnavi, G. (2024, April). Turbine Lube Oil Monitoring and Analysis Using IOT. In 2024 International Conference on Expert Clouds and Applications (ICOECA) (pp. 463-470). IEEE. https://doi.org/10.1109/ICOECA62351.2024.00087

Nishat, A. R., Dev, A., Biswas, A., & Aich, A. (2026). Compact Spiral Plate Heat Exchanger: A Comparison with Conventional Alternatives on Scaling and Fouling Mitigation. ASHRAE Transactions, 132, 37-46. https://doi.org/10.63044/w26dev01

Osintsev, K. V., Pshenisnov, N. A., & Pshenisnov, A. I. (2024). Analysis of operation of the oil-supply system of steam turbine before and after maintenance. Thermal Engineering, 71(9), 726-733. https://doi.org/10.1134/S0040601524700319

Pratrityo , R., Sukandi, A., & Belyamin , D. (2025). Analysis Lube Oil Cooler Damage Based on Efficiency Using the FMEA Method on Compressors at PT. Kilang Pertamina Internasional Refinery Unit III Plaju . Proceedings A of the National Seminar on Mechanical Engineering. Jakarta State Polytechnic , 405–411. http://prosiding.pnj.ac.id

Rantaujaya , A., Gusri Akhyar Ibrahim, and, Mechanical Engineering , J., Engineering, F., Lampung, U., & Lampung, B. (2025). TESTING AND PERFORMANCE ANALYSIS OF CROSS-FLOW HEAT EXCHANGER (SHELL AND TUBE) IN COFFEE DRYING MACHINE OF TULEN COFFEE FACTORY. FEMA JOURNAL OF MECHANICAL ENGINEERING | , 3 (2). https://doi.org/10.23960/fema.v3i2.8238

Rizal, M. (2017). ANALYSIS OF THE IMPACT OF DECREASE IN LUBE OIL COOLER PERFORMANCE ON TURBINES AT THE BELAWAN PLTU .

Roy, A., Kumar, S., Das, K., Kumar, A., Ebihara, A., Wang, C. T., & Katiyar, V. (2026). Next‐Generation Per and Poly‐Fluoroalkyl‐Free Graphene Oxide Modified Cellulose Ether Charge Separator for Antibiotic Micropollutant Removal and Energy Recovery in Hospital Wastewater‐Fed Microbial Fuel Cell. Journal of Polymer Science. https://doi.org/10.1002/pola.70044

Samie, B., Azad, M. T., Salehi, G., & Lari, K. (2025). Energy, exergy, and exergoeconomic evaluations of a combined cycle with three configurations for heat recovery steam generator. Journal of Thermal Analysis and Calorimetry, 150(7), 5495-5515. https://doi.org/10.1007/s10973-025-14134-7

Shinde, S., Kumkar, D., Kumbhar, A., Kumbhar, S., Madewar, R., Kumbhar, S., & Kadam, A. (2026, March). Long-term performance and reliability of heat exchangers. In AIP Conference Proceedings (Vol. 3369, No. 1, p. 040025). AIP Publishing LLC. https://doi.org/10.1063/5.0320691

Siagian , S. (2016). ANALYSIS OF THE EFFECTIVENESS OF SHELL AND TUBE TYPICAL HEAT EXCHANGER DEVICE RESULTING FROM STUDENT PLANNING ON A LABORATORY SCALE (Vol. 12).

Syarief , A., & Mahesa, R. (2021). ANALYSIS OF TURBINE OIL COOLER PERFORMANCE IN PLTU ASAM ASAM UNIT 1. TEKNIK INFO , 22 (1), 79–98.

Tanougast, A., & Hriczó, K. (2025). Advancements in Heat Exchangers for Improved Engine Cooling: A Comprehensive Literature Review. Periodica Polytechnica Transportation Engineering, 53(4), 431-439. https://doi.org/10.3311/PPtr.37123

Tol, H. İ. (2025). Development of a UA-Independent Effectiveness–Thermal Length Modelling for Heat Exchanger Performance Prediction. International Journal of Energy Horizon (IJEH), 1(2), 80-89.

Vieira, A. J. M., Silva, Y. D., & Frutuoso, L. F. A. (2025, October). Heat Exchangers Performance Monitoring and Intervention Planning Supported by Real-Time Calculations. In Offshore Technology Conference Brasil (p. D031S036R009). OTC.

Wang, J., Deng, X., Jia, D., Lei, J., & Xie, G. (2023). Numerical investigation on effects of rib shapes on oscillating flow and heat transfer in heat exchanger channels. Thermal Science and Engineering Progress, 42, 101919.

Wibowo, AK, & Dwiyantoro , BA (2014). Numerical Study Improved Cooling Performance on a Lube Oil Cooler Gas Turbine In Series and Parallel with Variation Capacity Lube Oil Flow . POMITS ENGINEERING JOURNAL , 3 (2), 169–173.

Yusmaini, N. A., Suzaimi, N. D., Abuhabib, A., Almanassra, I. W., Bagastyo, A. Y., Adnan, F. H., ... & Hamzah, S. (2026). Electrocoagulation strategies for oily wastewater treatment: a review on process efficiency and optimization. International Journal of Environmental Science and Technology, 23(3), 227. https://doi.org/10.1007/s13762-025-06847-x

Zhang, S., Gu, W., Zhang, X. P., Lu, H., Lu, S., Ding, S., ... & Zhao, S. (2023). Steady-state security region of integrated energy system considering thermal dynamics. IEEE Transactions on Power Systems, 39(2), 4138-4153. https://doi.org/10.1109/TPWRS.2023.3296080