• Muhammad Agung Bramantya Universitas Gadjah Mada



Modelling, Simulation, Fin Efficiency, Staggered


Power plants are part of industrial facilities used to produce and generate electricity from various power sources; one of those is PLTGU (Pembangkit Listrik Tenaga Gas dan Uap or Gas and Steam Power Plant). PLTGU is a combined cycle between PLTG and PLTU. It is necessary to achieve a high-capacity target for the PLTGU to increase the generator's efficiency. One way to increase the efficiency of gas and steam power plants is by optimizing heat transfer in the Heat Recovery Steam Generator (HRSG). HRSG has several modules such as superheater, evaporator, economizer, and preheater. One that plays an essential role in absorbed high-temperature steam from the gas turbine is the superheater. The function of the superheater is to utilize the heat from the flue gas to reheat the fluid needed for the steam turbine. In this research, improvements of superheater were made with several fin variations at HRSG PLTGU. Variable of superheater refer to data on the layout of the HRSG PLTGU. Autodesk Inventor is used to modeling flue gas domain, tube, and fin. Additional of the fin has the purpose of optimizing heat transfer distribution in steam through a tube, such as an outlet temperature and efficiency of steam in tube superheater. The use of CFD (Computational Fluid Dynamic) with ANSYS Fluent could use to determine the temperature distribution of the superheater. The most optimal efficiency and outlet temperature of variation fin is the annular fin variation compared to the rectangular and straight fin variations.

Author Biography

Muhammad Agung Bramantya, Universitas Gadjah Mada

Department of Mechanical and Industrial Engineering


Editorial, Databoks, konsumsi-listrik-nasional-terus-meningkat. Diakses: Maret 2021.

Chen, B., Guo, Q., Chen, Y. and Sun, H. "An economic dispatch model for combined heat and power systems considering the characteristics of Heat Recovery Steam Generators.", International Journal of Electrical Power & Energy Systems, 118, p.105775, 2020.

Taler, D., Trojan, M., Dzierwa, P., Kaczmarski, K. and Taler, J., "Numerical simulation of convective superheaters in steam boilers.", International Journal of Thermal Sciences, 129, pp.320-333, 2018.

Suparmin, P., “Analisis Pengaruh Penurunan Temperatur LMTD Terhadap Unjuk Kerja HRSG pada PLTGU.”, Jurnal PowerPlant, 6(2), pp.74-85, 2018.

Hennessey, S.P., Superheaters and reheaters in Heat Recovery Steam Generator Technology, Woodhead Publishing, pp. 95-113, 2017.

Thulukkanam, K., Heat exchanger design handbook, CRC Press, 2013.

Khan, M.S., Zou, R. and Yu, A., "Computational simulation of air-side heat transfer and pressure drop performance in Staggered mannered twisted oval tube bundle operating in crossflow.", International Journal of Thermal Sciences, 161, p.106748, 2021.

Wei, L., Zhu, G. and Jin, Z., "Numerical simulation of heat transfer in finned tube of heat recovery unit using fluid-solid coupled method.", Advances in Mechanical Engineering, 7(1), p.127815, 2015.

Chen, Han-Taw, et al., "Numerical study of mixed convection heat transfer for vertical annular finned tube heat exchanger with experimental data and different tube diameters.", International Journal of Heat and Mass Transfer, 118: 931-947, 2018.

Sertkaya, A.A. and Sari, S., "Experimental Investigation of Heat Transfer Depending on Inclination Angle of Unfinned, Axial Finned and Radial Finned Heat exchangers.", International Journal of Heat and Mass Transfer, 165, p.120704, 2021.

Dehnavi, F., A. Eslami, and F. Ashrafizadeh., "A case study on failure of superheater tubes in an industrial power plant.", Engineering Failure Analysis 80: 368-377, 2017.

Morales-Fuentes, A. and Loredo-Sáenz, Y.A., "Identifying the geometry parameters and fin-type that lead to enhanced performance in tube-and-fin geometries.", Applied Thermal Engineering, 131, pp.793-805, 2018

F. A. Ramadhan, “Improvement Performa Efisiensi Superheater dengan Penambahan Fin melalui Pengoptimalan Transfer Kalor pada Heat Recovery Steam Generator PLTGU”, Skripsi, Universitas Gadjah Mada, 2021

Incropera, F. P., Dewitt, D. P., Bergman, T. L., & Lavine, A. S., Fundamentals of heat and mass transfer, Vol. 6, New York, Wiley, 1996.

Cengel, Yunus A.; Klein, Sanford; Beckman, William., Heat transfer: a practical approach, Boston, WBC McGraw-Hill, 1998.

Bula, Muhamad, Slamet Wahyudi, and Nurkholis Hamidi., "Pengaruh Diameter Inner-Helical Fin Terhadap Characteristic of Performance Counter Flow Heat Exchanger." Rekayasa Mesin 1.3: 100-106, 2012.

Bhale, Pradhyumn, et al. "Airside performance of H-type finned tube banks with surface modifications.", Energies, 12.4, pp. 584, 2019:

Zhang, J.N., Cheng, M., Ding, Y.D., Fu, Q. and Chen, Z.Y., "Influence of geometric parameters on the gas-side heat transfer and pressure drop characteristics of three-dimensional finned tube.", International Journal of Heat and Mass Transfer, 133, pp.192-202, 2019.