Justification of efficiency of plain shaped heat exchange surfaces to increase the compactness of power plants
Keywords:power plant, compactness, heat exchanger, thermohydraulic efficiency, shaped surface, RSM turbulence model
AbstractSubstantiation of using non-circular plain shaped surfaces to increase the compactness of power plants is presented. The criterion of thermohydraulic compactness is justified, which takes into account the layout and arrangement of heat transfer elements and their thermohydraulic efficiency. To simulate heat movement and transfer processes in elements of power plants, the computational fluid dynamics method is used. Verification is carried out with available literature data, the discrepancy of results does not exceed 2.4 %. For single elliptical and plane-oval shapes, there is a local maximum of efficiency, achieved at the axis ratio of 2.5 for elliptical and 2.75 for plane-oval. Studies of the change of the heat transfer coefficient in the tube bank rows are carried out. For the elliptical tube bank, heat transfer is stabilized from the fifth row. Heat transfer surfaces of circular, elliptical and plane-oval tubes with different combinations of geometric characteristics are considered. It is found that on the basis of elliptical tubes it is possible to reduce the volume of the heat transfer surface and increase the compactness of the entire power plant by 18.3 % compared to circular tubes and 2.4 % compared to flat-oval ones. Dimensionless indices of mass, volume, functional efficiency and service life of the heat exchanger are substantiated, allowing them to be compared as part of various power plants. It is advisable to continue studies of the features of heat transfer processes in close, with the relative longitudinal and transverse pitch ratio less than 1.5, banks of elliptical tubes with an axis ratio of 2.5
Reliable gas turbines. Available at: new.siemens.com/global/en/products/energy/power-generation/gas-turbines
Waste Heat Recovery System (WHRS) for Reduction of Fuel Consumption, Emissions and EEDI. MAN Diesel & Turbo. Available at: https://mandieselturbo.com/docs/librariesprovider6/technical-papers/waste-heat-recovery-system.pdf
Arkhipov, G. A., Borovikova, I. A., Danilovsky, A. G. (2019). Composition and location of maritime equipment transport ships. Morskie intellektualnye tekhnologii, 2 (44), 136–142.
Pysmennyi, Ye. M., Kondratiuk, V. A., Terekh, O. M., Rudenko, O. I., Baraniuk, O. V. (2015). Analysis of experimental data on aerodynamic drag of flat-oval tube bundles. Eastern-European Journal of Enterprise Technologies, 6 (8 (78)), 19. doi: http://doi.org/10.15587/1729-4061.2015.55529
Cherednichenko, O., Serbin, S., Dzida, M. (2019). Investigation of the Combustion Processes in the Gas Turbine Module of an FPSO Operating on Associated Gas Conversion Products. Polish Maritime Research, 26 (4), 149–156. doi: http://doi.org/10.2478/pomr-2019-0077
Wong, H. Y. (1977). Handbook of Essential Formulae and Data on Heat Transfer for Engineers. Longman: Technology & Engineering, 236.
Pis’mennyi, E. N. (2012). Ways for improving the tubular heaters used in gas turbine units. Thermal Engineering, 59 (6), 485–490. doi: http://doi.org/10.1134/s0040601512060080
Sajadi, A. R., Yamani Douzi Sorkhabi, S., Ashtiani, D., Kowsari, F. (2014). Experimental and numerical study on heat transfer and flow resistance of oil flow in alternating elliptical axis tubes. International Journal of Heat and Mass Transfer, 77, 124–130. doi: http://doi.org/10.1016/j.ijheatmasstransfer.2014.05.014
Shahane, A., Ghodake, L., Kashid, D. T., Ghodake, D. S. (2019). Enhancement of Heat Transfer Coefficient through Forced Convection Apparatus by Using Circular and Elliptical Pipe. International Journal of New Technology and Research, 5 (4), 38–43. doi: http://doi.org/10.31871/ijntr.5.4.22
Lopata, S., Oclon, P., Stelmach, T., Markowski, P. (2019). Heat transfer coefficient in elliptical tube at the constant heat flux. Thermal Science, 23 (4), 1323–1332. doi: http://doi.org/10.2298/tsci19s4323l
Hasan, A. (2005). Thermal-hydraulic performance of oval tubes in a cross-flow of air. Heat and Mass Transfer, 41 (8), 724–733. doi: http://doi.org/10.1007/s00231-004-0612-7
Khan, W. A., Culham, J. R., Yovanovich, M. M. (2005). Fluid Flow Around and Heat Transfer From Elliptical Cylinders: Analytical Approach. Journal of Thermophysics and Heat Transfer, 19 (2), 178–185. doi: http://doi.org/10.2514/1.10456
Khalatov, A. A. (2005). Heat Transfer and Fluid Mechanics over Surface Indentation (Dimples). Kyiv: National Academy of Science of Ukraine. Institute of Engineering Thermophisics.
Kuznetsov, V. V. (2020). Mnogourovnevaia otsenka effektivnosti protsessov perenosa teploty v elementakh energeticheskikh ustanovok. Problemy regionalnoi energetiki, 3 (47), 28–38.
Bystrov, Iu. A., Isaev, S. A., Kudriavtsev, N. A., Leontev, A. I. (2005). Chislennoe modelirovanie vikhrevoi intensifikatsii teploobmena v paketakh trub. Saint Petersburg: Sudostroenie, 398.
Patankar, S. (1980). Numerical Heat Transfer and Fluid Flou. Hemisphere Publishing Corporation, New York, 152. doi: http://doi.org/10.1201/9781482234213
Bronshtein, I. N., Semendiaev, K. A. (1986). Spravochnik po matematike dlia inzhenerov i uchaschikhsia vtuzov. Moskva: Fiz.-mat. Lit., 544.
Kuznetsov, V. V., Solomoniuk, D. N. (2008). Proektirovanie teploobmennykh apparatov dlia GTU slozhnykh tsiklov. Vіsnik NTU „KHPІ”, 35, 78–88.
Gukhman, A. A. (2010). Primenenie teorii podobiia k issledovaniiu protsessov teplo-massoobmena: Protsessy perenosa v dvizhuscheisia srede. LKI, 330.
Kutateladze, S. S. (1990). Teploperedacha i gidrodinamicheskoe soprotivlenie. Moscow: Energoatomizdat, 367.
Martynenko, O. G. (1987). Spravochnik po teploobmennikam. Vol. 2. Moscow: Energoatomizdat, 352.
Product & Specification (Marine division): Catalog. Available at: http://www.kangrim.com/_kang/Catalog.pdf
Exhaust Gas Heat Exchanger. Available at:https://www.kelvion.com/products/product/exhaust-gas-heat-exchanger/
Waste heat boiler. Available at: https://www.viessmann.ae/en/industry/waste-heat-boilers.html
Waste heat recovery heater. Available at: https://www.alfalaval.com/products/heat-transfer/heaters/waste-heat-recovery-heater/
DNV GL. Rules For Classification. Ships. Part 4 Systems and components. Chapter 7 Pressure equipment. Available at: https://rules.dnvgl.com/docs/pdf/DNVGL/RU-SHIP/2015-10/DNVGL-RU-SHIP-Pt4Ch7.pdf
ISO 16528-1:2007. Boilers and pressure vessels. Part 1: Performance requirements. Available at: https://www.iso.org/standard/41079.html
DIN EN 13445-3:2018-12. Unfired pressure vessels – Part 3: Design. German version EN 13445-3:2014. Available at: https://standards.iteh.ai/catalog/standards/cen/80b1e81a-4621-4fa3-937e-26b1003246b4/en-13445-3-2014
How to Cite
Copyright (c) 2020 Валерий Валериевич Кузнецов
This work is licensed under a Creative Commons Attribution 4.0 International License.
Our journal abides by the Creative Commons CC BY copyright rights and permissions for open access journals.
Authors, who are published in this journal, agree to the following conditions:
1. The authors reserve the right to authorship of the work and pass the first publication right of this work to the journal under the terms of a Creative Commons CC BY , which allows others to freely distribute the published research with the obligatory reference to the authors of the original work and the first publication of the work in this journal.
2. The authors have the right to conclude separate supplement agreements that relate to non-exclusive work distribution in the form in which it has been published by the journal (for example, to upload the work to the online storage of the journal or publish it as part of a monograph), provided that the reference to the first publication of the work in this journal is included.