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Journal articles on the topic 'Heat Recovery Steam Generator'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 September 2023

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1

Vivek, P., and P. Vijaya kumar. "Heat Recovery Steam Generator by Using Cogeneration." International Journal of Engineering Research 3, no. 8 (August 1, 2014): 512–16. http://dx.doi.org/10.17950/ijer/v3s8/808.

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2

Walter, Heimo, and Wladimir Linzer. "Flow Stability of Heat Recovery Steam Generators." Journal of Engineering for Gas Turbines and Power 128, no. 4 (March 1, 2004): 840–48. http://dx.doi.org/10.1115/1.2179469.

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This paper presents the results of theoretical flow stability analyses of two different types of natural circulation heat recovery steam generators (HRSG)—a two-drum steam generator—and a HRSG with a horizontal tube bank. The investigation shows the influence of the boiler geometry on the flow stability of the steam generators. For the two-drum boiler, the steady-state instability, namely, a reversed flow, is analyzed. Initial results of the investigation for the HRSG with a horizontal tube bank are also presented. In this case, the dynamic flow instability of density wave oscillations is analyzed.

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3

Ong'iro, A., V. I. Ugursal, A. M. Al Taweel, and J. D. Walker. "Modeling of heat recovery steam generator performance." Applied Thermal Engineering 17, no. 5 (May 1997): 427–46. http://dx.doi.org/10.1016/s1359-4311(96)00052-x.

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4

Norouzi, Elnaz, Majid Amidpour, and Mashallah Rezakazemi. "Heat recovery steam generator: Constructal thermoeconomic optimization." Applied Thermal Engineering 148 (February 2019): 747–53. http://dx.doi.org/10.1016/j.applthermaleng.2018.11.094.

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5

Ravi, Kumar, Krishna Rama, and Rama Sita. "Thermodynamic analysis of heat recovery steam generator in combined cycle power plant." Thermal Science 11, no. 4 (2007): 143–56. http://dx.doi.org/10.2298/tsci0704143r.

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Combined cycle power plants play an important role in the present energy sector. The main challenge in designing a combined cycle power plant is proper utilization of gas turbine exhaust heat in the steam cycle in order to achieve optimum steam turbine output. Most of the combined cycle developers focused on the gas turbine output and neglected the role of the heat recovery steam generator which strongly affects the overall performance of the combined cycle power plant. The present paper is aimed at optimal utilization of the flue gas recovery heat with different heat recovery steam generator configurations of single pressure and dual pressure. The combined cycle efficiency with different heat recovery steam generator configurations have been analyzed parametrically by using first law and second law of thermodynamics. It is observed that in the dual cycle high pressure steam turbine pressure must be high and low pressure steam turbine pressure must be low for better heat recovery from heat recovery steam generator.

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6

Kaviri, Ganjeh, M. N. Mohd Jafar, and M. L. Tholudin. "Modeling and Optimization of Heat Recovery Heat Exchanger." Applied Mechanics and Materials 110-116 (October 2011): 2448–52. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2448.

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The Combined Cycle Power Plants (CCPPs) are attractive in power generation field due to their higher thermal efficiency than individual steam or gas turbine cycles. Therefore thermo optimal design of Heat Recovery Steam Generator (HRSG) in CCPPs is an important subject due to the increasing the fuel prices and decreasing the fossil fuel resources. In this paper the heat recovery steam generator (HRSG) with typical geometry and number of pressure levels used at CCPPs in Iran is modeled. Then the optimal design of HRSG operating parameters was performed by defining an objective function and applying Generic algorithm optimization method. The total cost per unit of produced steam exergy was defined as the objective function. The objective function included capital or investment cost, operational cost, and the corresponding cost of the exergy destruction was minimized while satisfying a group of constraints.

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7

Hessler, George F. "Issues in heat recovery steam generator system noise." Journal of the Acoustical Society of America 101, no. 5 (May 1997): 3038. http://dx.doi.org/10.1121/1.418601.

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8

NAKAMOTO, Masashi, Keiko SHIMIZU, Hiroshi FUKUDA, and Shiro HINO. "H∞Control for a Heat Recovery Steam Generator." Transactions of the Institute of Systems, Control and Information Engineers 7, no. 5 (1994): 176–84. http://dx.doi.org/10.5687/iscie.7.176.

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9

Sharma, Meeta, and Onkar Singh. "Parametric Evaluation of Heat Recovery Steam Generator (HRSG)." Heat Transfer-Asian Research 43, no. 8 (December 13, 2013): 691–705. http://dx.doi.org/10.1002/htj.21106.

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10

Altosole, Marco, Giovanni Benvenuto, Raphael Zaccone, and Ugo Campora. "Comparison of Saturated and Superheated Steam Plants for Waste-Heat Recovery of Dual-Fuel Marine Engines." Energies 13, no. 4 (February 22, 2020): 985. http://dx.doi.org/10.3390/en13040985.

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From the working data of a dual-fuel marine engine, in this paper, we optimized and compared two waste-heat-recovery single-pressure steam plants—the first characterized by a saturated-steam Rankine cycle, the other by a superheated-steam cycle–using suitably developed simulation models. The objective was to improve the recovered heat from the considered engine, running with both heavy fuel oil and natural gas. The comparison was carried out on the basis of energetic and exergetic considerations, concerning various aspects such as the thermodynamic performance of the heat-recovery steam generator and the efficiency of the Rankine cycle and of the combined dual-fuel-engine–waste-heat-recovery plant. Other important issues were also considered in the comparison, particularly the dimensions and weights of the steam generator as a whole and of its components (economizer, evaporator, superheater) in relation to the exchanged thermal powers. We present the comparison results for different engine working conditions and fuel typology (heavy fuel oil or natural gas).

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11

Dechamps, P. J. "Modelling the Transient Behaviour of Heat Recovery Steam Generators." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 209, no. 4 (November 1995): 265–73. http://dx.doi.org/10.1243/pime_proc_1995_209_005_01.

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This paper describes a method used to compute the transient performances of assisted circulation heat recovery steam generators. These heat recovery steam generators are composed of several heat exchangers, each of which is a bundle of tubes. The method presented here treats each heat exchanger in a similar way, replacing the bundle of tubes with an ‘equivalent’ linear heat exchanger. This equivalent linear heat exchanger is then discretized in as many slices as required by the accuracy. The mass and enthalpy equations on each of these control volumes are solved by a fully explicit numerical method, adapted for the special conditions encountered in this kind of problem, allowing a considerable reduction of the computation time compared to other methods. Some emphasis is put on the modifications required to solve the equations for the evaporators because they are two-phase heat exchangers. A model for the steam drums is also presented together with simple models for the main control loops used in such systems. An example is presented in which an existing dual pressure level heat recovery steam generator is started from a cold state. The numerical predictions are in good agreement with measurements.

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12

Gandy, D., G. Frederick, and K. Coleman. "Repair welding technologies for heat recovery steam generator tubing." Energy Materials 1, no. 2 (June 2006): 127–35. http://dx.doi.org/10.1179/174892306x99714.

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13

FUNATSU, Tetsuya, Masashi NAKAMOTO, and Masafumi FUKUDA. "An Optimum Design Method for Heat Recovery Steam Generator." Transactions of the Japan Society of Mechanical Engineers Series B 64, no. 627 (1998): 3846–52. http://dx.doi.org/10.1299/kikaib.64.3846.

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14

Ahmed, Awais, Khaled Khodary Esmaeil, Mohammad A. Irfan, and Fahad A. Al-Mufadi. "Design methodology of heat recovery steam generator in electric utility for waste heat recovery." International Journal of Low-Carbon Technologies 13, no. 4 (September 12, 2018): 369–79. http://dx.doi.org/10.1093/ijlct/cty045.

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15

Ahn, J., Y. S. Lee, and J. J. Kim. "STEAM DRUM DESIGN FOR A HRSG BASED ON CFD." Journal of computational fluids engineering 16, no. 1 (March 31, 2011): 67–72. http://dx.doi.org/10.6112/kscfe.2011.16.1.067.

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16

Lee, Boo-Youn. "Stress Analysis and Evaluation of Steam Separator of Heat Recovery Steam Generator (HRSG)." Korean Society of Manufacturing Process Engineers 17, no. 4 (August 30, 2018): 23–31. http://dx.doi.org/10.14775/ksmpe.2018.17.4.023.

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17

Vikhraman Muniandy, Mohd Sharizal Abdul Aziz, and Hadafi Fitri Mohd Latip. "Study on The Improvement of Heat Recovery Steam Generator Efficiency – A Review." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 94, no. 2 (May 24, 2022): 89–98. http://dx.doi.org/10.37934/arfmts.94.2.8998.

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Boilers are widely used in industries to produce steam. In some sectors, the steam generated is utilized directly in the production line for heating. Certain industries use steam to produce electricity. Fire tube boilers are limited to generating steam for processing; meanwhile, water tube boilers are widely used in electricity generation besides steam generation for processing lines. Subcritical boilers, supercritical boilers, and Heat Recovery Steam Generator (HRSG) are types of boilers commonly used to produce high capacity steam. This review article focuses on the optimization of HRSG operational efficiency. Industry players are keen on the improvement of operational efficiency since these directly influence the operating cost. Steam pressure, steam output, heat transfer efficiency and temperature distributions are key areas comprehensively reviewed in this article. Generally, improvement studies on boilers are not feasible to conduct during operation. Therefore, the scaled-down model used in the experiment or the boilers CFD models are simulated to understand the characteristics of the boilers. This review article is expected to overview HRSG boiler efficiency improvements and factors influencing boiler operational parameters.

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18

Weir, C. D. "Estimating the Performance of Gas Turbine Heat-Recovery Boilers Off-Design." Proceedings of the Institution of Mechanical Engineers, Part A: Power and Process Engineering 202, no. 4 (November 1988): 269–77. http://dx.doi.org/10.1243/pime_proc_1988_202_037_02.

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In installations where a gas turbine is coupled to a steam prime mover through an exhaust heat steam generator, the need may arise to estimate the behaviour of the latter away from its specified design conditions. For example, the performance of the steam generator when the gas turbine is operating away from its design conditions may be of fundamental importance in relation to the economics of a proposed coupled installation. In particular, it determines inter alia the extent to which supplementary firing may be required. A question closely related to that of the off-design performance of a given exhaust heat steam generator is that of evaluating the comparative merits as regards thermal performance of designs differing in the layout and configuration of the heat-transfer surfaces when tendered for the same specified duty. (The need for such assessments frequently arises in the examination of competitive tenders.) The paper discusses briefly procedures allowing the influences of the interrelated heat balances of the heat-transfer surfaces, of the heat-transfer surface geometry and of the steam and gas physical properties to be analysed separately and integrated into a computational procedure permitting their combined effect on performance to be determined with sufficient accuracy.

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19

Ameri, Mohammad, and Farnaz Jazini Dorcheh. "The CFD Modeling of Heat Recovery Steam Generator Inlet Duct." International Journal of Energy Engineering 3, no. 3 (June 5, 2013): 74–79. http://dx.doi.org/10.5963/ijee0303003.

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20

Reddy, B. V., G. Ramkiran, K. Ashok Kumar, and P. K. Nag. "Second law analysis of a waste heat recovery steam generator." International Journal of Heat and Mass Transfer 45, no. 9 (April 2002): 1807–14. http://dx.doi.org/10.1016/s0017-9310(01)00293-9.

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21

Alobaid, Falah, Stefan Pfeiffer, Bernd Epple, Chil-Yeong Seon, and Hyun-Gee Kim. "Fast start-up analyses for Benson heat recovery steam generator." Energy 46, no. 1 (October 2012): 295–309. http://dx.doi.org/10.1016/j.energy.2012.08.020.

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22

Sharma, Meeta, and Onkar Singh. "Exergy Based Parametric Analysis of a Heat Recovery Steam Generator." Heat Transfer-Asian Research 45, no. 1 (July 2, 2014): 1–14. http://dx.doi.org/10.1002/htj.21148.

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23

Seo, Sang-Il. "A Two-phase FAC Study on Heat Recovery Steam Generator." Journal of Power System Engineering 26, no. 5 (October 31, 2022): 64–71. http://dx.doi.org/10.9726/kspse.2022.26.5.064.

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24

Vannoni, Alberto, Alessandro Sorce, Sven Bosser, and Torsten Buddenberg. "Heat recovery from Combined Cycle Power Plants for Heat Pumps." E3S Web of Conferences 113 (2019): 01011. http://dx.doi.org/10.1051/e3sconf/201911301011.

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Fossil fuel power plants, as combined cycle plants (CCGT), will increasingly have to shift their role from providing base-load power to providing fluctuating back-up power to control and stabilize the grid, but they also have to be able to run at the highest possible efficiency. Combined Heat and Power generation could be a smart solution to overcome the flexibility required to a modern power plant, this work investigates different layout possibilities allowing to increase the overall efficiency through the heat recover from the hot flue gasses after the heat recovery steam generator (HRSG) of a CCGT. The flue gas (FG) cooling aims to recover not only the sensible heat but also the latent heat by condensing the water content. One possible solution couples a heat pump to the flue gas condenser in order to increase the temperature at which the recovered heat is supplied, moreover the evaluated layout has to comply with the requirement of a minimum temperature before entering the stack.

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25

Langston, Lee S. "Cogeneration: Gas Turbine Multitasking." Mechanical Engineering 134, no. 08 (August 1, 2012): 50. http://dx.doi.org/10.1115/1.2012-aug-4.

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This article describes the functioning of the gas turbine cogeneration power plant at the University of Connecticut (UConn) in Storrs. This 25-MW power plant serves the 18,000 students’ campus. It has been in operation since 2006 and is expected to save the University $180M in energy costs over its 40-year design life. The heart of the UConn cogeneration plant consists of three 7-MW Solar Taurus gas turbines burning natural gas, with fuel oil as a backup. These drive water-cooled generators to produce up to 20–24 MW of electrical power distributed throughout the campus. Gas turbine exhaust heat is used to generate up to 200,000 pounds per hour of steam in heat recovery steam generators (HRSGs). The HRSGs provide high-pressure steam to power a 4.6-MW steam turbine generator set for more electrical power and low-pressure steam for campus heating. The waste heat from the steam turbine contained in low-pressure turbine exhaust steam is combined with the HRSG low-pressure steam output for campus heating.

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26

Strusnik, Dusan, Igor Kustrin, and Jurij Avsec. "Off-design flow analysis of cogeneration steam turbine with real process data." Thermal Science 26, no. 5 Part B (2022): 4107–17. http://dx.doi.org/10.2298/tsci2205107s.

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This paper presents the concept of reconstruction of the existing coal-fired combined heat and power plant to comply with new European environmental policies. The existing coal-fired boiler will be replaced by two new dual pressure heat recovery steam generators, which will utilize the exhaust gas heat from two new gas turbines. The steam from the heat recovery steam generators will be fed to the existing steam turbine. After the reconstruction, the nominal turbine inlet steam mass-flow of 40 kg/s will be reduced to 30 kg/s. During periods of low heat demand, only one gas turbine and one heat recovery steam generator will be in operation and the live steam mass-flow may drop even to 12 kg/s. Prior to the reconstruction, dedicated tests of the existing steam turbine were carried out using the steam from the existing coal-fired boiler. The goal of the test was to verify the viability of operation with such an extremely low mass-flow. The results of tests show that such operation is possible but inefficient from a power generation point of view. Besides this, the turbine control algorithm needs to be accommodated to this extreme operating regime and additional measures like displacement of the extraction points and steam cooling will be required to control the temperature of the steam extractions. The novelty of this paper is using real pre-reconstruction process data for the assessment of feasibility and efficiency of the post-reconstruction operation of a combined heat and power turbine.

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27

Kim, Dong-Seop, Bong-Ryeol Lee, Seung-Tak No, Heung-Tae Sin, and Yong-Jun Jeon. "Thermal Design Analysis of Triple-Pressure Heat Recovery Steam Generator and Steam Turbine Systems." Transactions of the Korean Society of Mechanical Engineers B 26, no. 3 (March 1, 2002): 507–14. http://dx.doi.org/10.3795/ksme-b.2002.26.3.507.

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28

Singh, Onkar, Gaitry Arora, and Vinod Kumar Sharma. "Energy-Exergy Analysis of Solarized Triple Combined Cycle Having Intercooling, Reheating and Waste Heat Utilization." Tecnica Italiana-Italian Journal of Engineering Science 65, no. 1 (March 31, 2021): 93–104. http://dx.doi.org/10.18280/ti-ijes.650114.

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Heliostat-based solar thermal power system consisting of a combination of the Brayton cycle, Rankine cycle, and organic Rankine cycle is a potential option for harnessing solar energy for power generation. Among different options for improving the performance of solarized triple combined cycle the option of introducing intercooling and reheating in the gas turbine cycle and utilizing the waste heat for augmenting the power output needs investigation. Present study considers a solarized triple combined cycle with intercooling and reheating in gas turbines while using the heat rejected in intercooling in heat recovery vapour generator and heat recovery steam generator separately in two different arrangements. A comparison of two distinct cycle arrangements has been carried out based on Ist law and IInd law of thermodynamics with the help of thermodynamic parameters. Results show that triple combined cycle having intercooling heat used in heat recovery vapour generator offers maximum energy efficiency of 63.54% at 8 CPR & 300K ambient temperature and maximum exergetic efficiency of 38.37% at 14 CPR & 300 K. While the use of intercooling heat in heat recovery steam generator offers maximum energy and exergetic efficiency of 64.15% and 39.72% respectively at 16 CPR & 300 K ambient temperature.

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29

Jesionek, Krzysztof, Andrzej Chrzczonowski, Paweł Ziółkowski, and Janusz Badur. "Power enhancement of the Brayton cycle by steam utilization." Archives of Thermodynamics 33, no. 3 (September 1, 2012): 36–47. http://dx.doi.org/10.2478/v10173-012-0016-x.

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Abstract The paper presents thermodynamic analysis of the gas-steam unit of the 65 MWe combined heat and power station. Numerical analyses of the station was performed for the nominal operation conditions determining the Brayton and combined cycle. Furthermore, steam utilization for the gas turbine propulsion in the Cheng cycle was analysed. In the considered modernization, steam generated in the heat recovery steam generator unit is directed into the gas turbine combustion chamber, resulting in the Brayton cycle power increase. Computational flow mechanics codes were used in the analysis of the thermodynamic and operational parameters of the unit.

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30

Putro, R. Sony Endardo, Arif Hariyadi, and Suwarno Suwarno. "Failure Analysis of Bend Tube Preheater on Heat Recovery Steam Generator." International Journal of Mechanical Engineering and Sciences 1, no. 1 (March 31, 2017): 37. http://dx.doi.org/10.12962/j25807471.v1i1.2222.

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31

Ren, Facai, and Xiaoying Tang. "Cracking failure analysis of convection tube of heat recovery steam generator." IOP Conference Series: Materials Science and Engineering 631 (November 7, 2019): 022087. http://dx.doi.org/10.1088/1757-899x/631/2/022087.

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32

Du, Wenjing, Jinbo Li, and Baoqiang Yuan. "Dynamic characteristics analysis of a once-through heat recovery steam generator." Applied Thermal Engineering 173 (June 2020): 115155. http://dx.doi.org/10.1016/j.applthermaleng.2020.115155.

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33

Cao, Xiao-ling, Zheng-ren Pi, Shao-jian Jiang, Wei-hong Yang, and B. Wlodzimerz. "Dynamic simulation of drum level sloshing of heat recovery steam generator." Journal of Central South University 20, no. 2 (February 2013): 413–23. http://dx.doi.org/10.1007/s11771-013-1502-2.

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34

Ighodaro, O. O., and M. Osikhuemhe. "Thermo-economic analysis of a heat recovery steam generator combined cycle." Nigerian Journal of Technology 38, no. 2 (April 17, 2019): 342. http://dx.doi.org/10.4314/njt.v38i2.10.

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35

Chaibakhsh, Ali. "Modelling and long-term simulation of a heat recovery steam generator." Mathematical and Computer Modelling of Dynamical Systems 19, no. 2 (April 2013): 91–114. http://dx.doi.org/10.1080/13873954.2012.698623.

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36

Katla, Daria, Łukasz Bartela, and Anna Skorek-Osikowska. "Evaluation of electricity generation subsystem of Power-to-Gas-to-Power unit using gas expander and heat recovery steam generator." E3S Web of Conferences 137 (2019): 01017. http://dx.doi.org/10.1051/e3sconf/201913701017.

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In the last years, the European energy policy has required to increase the share of renewable energy sources in the national energy systems. It is important to diversify the energy system not to bring about a global crisis resulting from the fundamental lack of electricity. Unfortunately renewable sources are unstable and generate several problems during integration with the power grid. The solution is to store additional energy produced from renewable sources. In this way, energy can be used when there is a need. The paper discusses the study of the Power-to-Gas-to-Power installation using electrolysis and methanation processes at the energy storage stage and gas expanders during energy discharges. In addition, a part of the Heat Recovery Steam Generation installation has been implemented. The purpose of the work was to determine the impact of a given Heat Recovery Steam Generation installation on the efficiency of the entire installation and flue gas temperature at the outlet from Heat Recovery Steam Generator.

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37

Kim, T. S., and S. T. Ro. "The effect of gas turbine coolant modulation on the part load performance of combined cycle plants. Part 2: Combined cycle plant." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 211, no. 6 (September 1, 1997): 453–59. http://dx.doi.org/10.1243/0957650981537348.

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For combined cycle plants that consist of heavy-duty gas turbine and single-pressure heat recovery steam generator, the effect of gas turbine coolant modulation on plant performance is analysed. Two distinct schemes for gas turbine load control are adopted (the fuel-only control and the variable compressor geometry control), based on the gas turbine calculation in Part 1 of this series of papers. Models for heat recovery steam generator and steam turbine are combined with the gas turbine models of Part 1 to result in a complete analysis routine for combined cycles. The purpose of gas turbine coolant modulation is to minimize coolant consumption by maintaining the turbine blade temperatures as high as possible. It is found that the coolant modulation leads to reduction in heat recovery capacity, which decreases steam cycle power. However, since the benefit of coolant modulation for the gas turbine cycle is large enough, the combine cycle efficiency is improved.

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38

Ren, Meng Meng, Shu Zhong Wang, Li Li Qian, and Yan Hui Li. "High-Pressure Direct-Fired Steam-Gas Generator (HDSG) for Heavy Oil Recovery." Applied Mechanics and Materials 577 (July 2014): 523–26. http://dx.doi.org/10.4028/www.scientific.net/amm.577.523.

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High-pressure direct-fired steam-gas generator (HDSG) is to produce multiplex thermal fluid (contains water, CO2, N2 etc.) through efficient direct-contact heat transfer, which would utilize the flue gas heat and reduce the gas emission caused by ordinary boiler. Furthermore, the multiplex thermal fluid can promote the heavy oil recovery by both steam flooding and miscible flooding. This paper introduced three kinds of HDSG: pressurized submerged combustion vaporization (PSCV), multiplex thermal fluid generator and supercritical hydrothermal combustor, which are different in work pressure and method of mixing water and flue gas. Then, we discussed the economic efficiency of HDSG used for heavy oil recovery and concluded that although the pressurization of fuel and oxygen would cost as much as the energy saved by utilizing the flue gas heat, using HDSG for heavy oil recovery has other incalculable benefits such as miscible flooding, waste water treatment and reduction of heat loss through injection well. Finally, we indicated that supercritical hydrothermal combustor will be the trendy of HDSG and pointed out the future research should be carried out on the heat and mass transfer characteristic of the combustion field when water presents and the combustion stability and completeness when pressure increases.

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39

Feng, Hong Cui, Wei Zhong, Yan Ling Wu, and Shui Guang Tong. "The Effects of Parameters on HRSG Thermodynamic Performance." Advanced Materials Research 774-776 (September 2013): 383–92. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.383.

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Changes of inlet temperature, mass flow rate and composition of flue gas, or of water/steam pressure and temperature in heat recovery steam generator (HRSG), all will modify the amount of waste heat recovered from flue gas; this brings forward a desire for the optimization of the design of HRSG. For single pressure HRSGs with given structures and specified values of inlet temperature, mass flow rate and composition of flue gas, the steam mass flow rate and gas outlet temperature of the HRSG are analyzed as functions of several parameters. This analysis is based on the laws of thermodynamics, incorporated into the energy balance equations for the heat exchangers. Those parameters are superheated steam pressure and temperature, feedwater temperature and pinch point temperature difference. It was shown that the gas outlet temperature could be lowered by selecting appropriate water/steam parameters and pinch point temperature difference. While operating with the suggested parameters, the HRSG can generate more high-quality steam, a fact of great significance for waste heat recovery from wider ranges of sources for better energy conservation.

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40

SAARI, JUSSI, JUHA KAIKKO, EKATERINA SERMYAGINA, MARCELO HAMAGUCHI, MARCELO CARDOSO, ESA VAKKILAINEN, and MARKUS HAIDER. "Recovery boiler back-end heat recovery." March 2023 22, no. 3 (April 1, 2023): 174–83. http://dx.doi.org/10.32964/tj22.3.174.

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Sustainability and efficient use of resources are becoming increasingly important aspects in the operation of all industries. Recently, some biomass-fired boilers have been equipped with increasingly complex condensing back-end heat recovery solutions, sometimes also using heat pumps to upgrade the low-grade heat. In kraft recovery boilers, however, scrubbers are still mainly for gas cleaning, with only simple heat recovery solutions. In this paper, we use process simulation software to study the potential to improve the power generation and energy efficiency by applying condensing back-end heat recovery on a recovery boiler. Different configurations are considered, including heat pumps. Potential streams to serve as heat sinks are considered and evaluated. Lowering the recovery boiler flue gas temperature to approximately 65°C significantly decreases the flue gas losses. The heat can be recovered as hot water, which is used to partially replace low-pressure (LP) steam, making more steam available for the condensing steam turbine portion for increased power generation. The results indicate that in a simple condensing plant, some 1%–4% additional electricity could be generated. In a Nordic mill that provides district heating, even more additional electricity generation, up to 6%, could be achieved. Provided the availability of sufficient low-temperature heat sinks to use the recovered heat, as well as sufficient condensing turbine swallowing capacity to utilize the LP steam, the use of scrubbing and possibly upgrading the heat using heat pumps appears potentially useful.

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41

Lê, Hồng Nguyên, Thị Tuyết Mai Đặng, Thị Bích Phương Đặng, and Thị Ánh Trinh Lưu. "Recovering heat of flue gas from heat recovery steam generator system at Nhon Trach 1 and Nhon Trach 2 gas power plants by organic Rankine cycle to produce power." Petrovietnam Journal 5 (July 4, 2022): 38–42. http://dx.doi.org/10.47800/pvj.2022.05-05.

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Flue gas from gas turbines at Nhon Trach 1 and Nhon Trach 2 gas power plant are in the temperature range of 100 - 113oC after heat has been recovered at the heat recovery steam generator. These heat flows are not recovered by conventional methods since they are not effective. Meanwhile, the organic Rankine cycle (ORC) uses organic fluids with low boiling point, that is why it can recover heat from low-temperature flue gas streams. Results of the ORC investigation reveal that with R245fa as a fluid, the Nhon Trach 1’s capacity will increase by 2.0 MW, and the Nhon Trach 2’s capacity will see an increase of 3.6 MW with R113 as a fluid.

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MARUSHIMA, Shinya, Shigehisa SUGITA, and Syozo NAKAMURA. "A Method for Analyzing Sensitivity of Recoverable Heat in a Heat Recovery Steam Generator." Transactions of the Japan Society of Mechanical Engineers Series B 62, no. 593 (1996): 333–39. http://dx.doi.org/10.1299/kikaib.62.333.

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Hegde, N., I. Han, T. W. Lee, and R. P. Roy. "Flow and Heat Transfer in Heat Recovery Steam Generators." Journal of Energy Resources Technology 129, no. 3 (March 24, 2007): 232–42. http://dx.doi.org/10.1115/1.2751505.

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Computational simulations of flow and heat transfer in heat recovery steam generators (HRSGs) of vertical- and horizontal-tube designs are reported. The main objective of the work was to obtain simple modifications of their internal configuration that render the flow of combustion gas more spatially uniform. The computational method was validated by comparing some of the simulation results for a scaled-down laboratory model with experimental measurements in the same. Simulations were then carried out for two plant HRSGs—without and with the proposed modifications. The results show significantly more uniform combustion gas flow in the modified configurations. Heat transfer calculations were performed for one superheater section of the vertical-tube HRSG to determine the effect of the configuration modification on heat transfer from the combustion gas to the steam flowing in the superheater tubes.

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Kang, Dae Hoon, Sun-Ik Na, and Min Soo Kim. "Recent Researches on Steam Generation Heat Pump System." International Journal of Air-Conditioning and Refrigeration 25, no. 04 (December 2017): 1730005. http://dx.doi.org/10.1142/s2010132517300051.

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This paper reviews the latest researches on steam generation heat pump (SGHP) to cover diverse technologies to enhance the performance depending on its applications. High temperature heat pump that can produce steam was reviewed first, and SGHP which recovers waste heat from low grade heat source (evaporator) was outlined. Conventional waste heat recovery from many industrial sites was reviewed, and SGHP to produce higher temperature steam by re-compression after heat sink (condenser) was discussed.

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SUGANDI, BUDI, FAUZUN ATABIQ, and RIFKA ADELIA ASTI. "Pengaruh Beban Gas Turbine Generator terhadap Efisiensi Heat Recovery Steam Generator pada Pembangkit Listrik Tenaga Gas Uap (PLTGU)." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 11, no. 3 (July 25, 2023): 639. http://dx.doi.org/10.26760/elkomika.v11i3.639.

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ABSTRAKPembangkit Listrik Tenaga Gas Uap (PLTGU) merupakan kombinasi Pembangkit Listrik Tenaga Gas (PLTG) dan Pembangkit Listrik Tenaga Uap (PLTU). Kombinasi ini menggunakan sistem combine cycle power plant. Untuk meningkatkan efisiensi pembangkit, PLTGU memanfaatkan panas gas buang turbin untuk memanaskanair pada pipa-pipa Heat Recovery Steam Generator (HRSG) menjadi uap yang digunakan untuk menggerakkan bilah-bilah turbin uap dan memutar generator guna menghasilkan energi listrik. Artikel ini membahas pengaruh beban terhadap efisiensi HRSG. Pengamatan dilakukan selama 24 jam selama beberapa hari. Hasil penelitian menunjukkan bahwa efisiensi rata-rata HRSG selama periode tersebut adalah 65% dengan beban rata-rata 28184 kW. Efisiensi tertinggi HRSG dicapai pada saat beban 25957 kW yaitu 75.14%. sedangkan efisiensi terendah saat beban 30127 kW yaitu 56.77%. Koefisien korelasi diperoleh sebesar –0.7 yang berarti pengaruh beban terhadap efisiensi kuat dan berbanding terbalik. Nilai R Square menunjukkan pengaruh pembebanan terhadap efisiensi HRSG yaitu 48.23 %.Kata kunci: PLTGU, efisiensi HRSG, koefisien korelasi, combine cycle power plant ABSTRACTSteam Gas Power Plant (PLTGU) is a combination of Gas Power Plant (PLTG) and Steam Power Plant (PLTU). This combination is called combine cycle power plant. To increase generator efficiency, PLTGU utilizes heat from turbine exhaust gas to heat water in the Heat Recovery Steam Generator (HRSG) tubing into steam, which is used to drive the steam turbine blades and rotate the generator to produce electricity. This research analyzes effect of load on efficiency of HRSG. The results showed that the average HRSG efficiency during that period was 65 % with an average load of 28184 kW. The highest HRSG efficiency is 75.14% when the load is 25957 kW while the lowest is 56.77% when the load 30127 kW. The correlation is obtained -0.7 that showed the effect of load to the efficiency is strong and inversely proportional. The R Square showed effect of load on HRSG efficiency is 48.23%.Keywords: PLTGU, efficiency of HRSG, correlation coefficient, combine cycle power plant

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Safira, Mayang, Melda Latif, Zaini Zaini, Aulia Aulia, Mumuh Muharam, and Waweru Njeri. "Analysis of Exhaust Gas Heat Utilization in Waste Heat Recovery Power Generator at Indarung V Factory PT Semen Padang." Andalas Journal of Electrical and Electronic Engineering Technology 3, no. 1 (May 15, 2023): 23–29. http://dx.doi.org/10.25077/ajeeet.v3i1.34.

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Increasing energy efficiency in the cement production process at PT Semen Padang is carried out by reusing exhaust gas to produce electricity using Waste heat recovery power generation (WHRPG) with a capacity of 8.5 MW. WHRPG is a technology for utilizing exhaust gas heat as a source of heat energy to heat feed water into steam by using a suspension preheater (SP) boiler and air quenching cooler (AQC) boiler. This study aims to calculate the power potential of the steam heat influenced by the steam temperature and the mass flow rate of the steam produced by the boiler, to calculate the efficiency of the boiler using the direct method by comparing the boiler output heat against the boiler input heat, to calculate the turbine efficiency based on the difference between the steam enthalpy enter the turbine against the steam enthalpy out of the turbine and the isotropic enthalpy of the steam out of the turbine and to calculate the power generated by WHRPG at PT Semen Padang. The results obtained in this study are the total potential power of steam heat is 19.778 MW, the boiler AQC efficiency is 70.30%, the boiler SP efficiency is 94.04% and the turbine efficiency is 78.64%. The electricity generated by PT Semen Padang's WHRPG is 3.70 MW.

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Maghsoudi, Mehrabani, Abdollah Mehrpanahi, Vahid Rouhani, and Naser Nikbakht. "Study of the effect of using duct burner on the functional parameters of the two repowered cycles through exergy analysis." Thermal Science 21, no. 6 Part B (2017): 3011–23. http://dx.doi.org/10.2298/tsci151207310m.

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Steam power plants have been extensively used in Iran for a long time, yet no specific step has been taken for promoting their performance. In this regard, full repowering is considered as a way to enhance the performance of steam power plants. Furthermore, because of the continental condition of Iran, duct burners can be used as a common strategy to compensate for power generation shortage caused by environmental conditions. In this study, the effect of using a duct burner on the full repowering of Be?sat Steam Cycle representing both single-and dual-pressure cycles was investigated based on exergy analysis. The results showed that by using the duct burner, due to the increase in the heat recovery steam generator inlet gas temperature, the general thermal efficiency of the combined cycle and the exergy efficiency of the combined cycle and heat recovery steam generator decreased. However, the results revealed an increase in the stack temperature and resulting exergy losses, steam flow and power generation.

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MERT, Suha Orçun, Zehra ÖZÇELİK, and Ceyda KÖK. "Modelling, Sensitivity and Exergy Analysis of Triple-Pressure Heat Recovery Steam Generator." MANAS Journal of Engineering 8, no. 2 (December 21, 2020): 106–14. http://dx.doi.org/10.51354/mjen.793611.

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Nag, P. K., and S. De. "Design and operation of a heat recovery steam generator with minimum irreversibility." Applied Thermal Engineering 17, no. 4 (April 1997): 385–91. http://dx.doi.org/10.1016/s1359-4311(96)00033-6.

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Mehrgoo, Morteza, and Majid Amidpour. "Constructal design and optimization of a dual pressure heat recovery steam generator." Energy 124 (April 2017): 87–99. http://dx.doi.org/10.1016/j.energy.2017.02.046.

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