Design of a natural circulation circuit for 85 MW steam boiler

Pleshanov, A Konstantin; Khlyst, G Ekaterina; Zaichenko, M. N.; Sterkhov, K. V.

doi:10.2298/tsci161005320p

Cited by 16 publications

(5 citation statements)

References 8 publications

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“…The flow rate is assumed to be uniform in one-ended inclined pipe, and eq. ( 4) can be written: (4) The properties of Mobiltherm605 heat transfer oil used in the experiments were available and limited to a few temperature values in the product catalog [17]. The properties of the oil for the…”

Section: Mass Flow and Energy Calculationsmentioning

confidence: 99%

“…There are many various studies in the literature on natural flow in the pipe [3,[4][5][6][7][8]. For instance, Li et al [3] describe a numerical and theoretical study on a horizontal single-ended evacuated tube.…”

Section: Introductionmentioning

confidence: 99%

“…The results showed that the secondary flow had a significant influence on the natural circulation flow rate and the temperature distribution within the tube. Pleshanov et al [4] describe the research and design of a fluidized bed steam boiler natural circulation circuit. There are two variants of research results of the designed circulation circuit.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical model of natural circulation flow and heat transfer within one-ended inclined pipe

Bayhan

Arslan

2022

Therm sci

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The most commonplace natural flow inside one-ended inclined pipes today is water heating systems. In this study, a model was created for the estimation of the pipe outlet temperature of the fluid with the energy balance for the inside of the tank, flow rate calculation of natural circulation, and other thermal calculations in a one-ended inclined pipe. In addition, this model has been compared with the Li model in the literature, and it is easier and more successful. 100, 200, 400, 600, and 800 W thermal power was applied to a one-ended inclined pipe, and the temperature values were recorded in 5-minute periods in the experiments that lasted a total of 6 hours. As the average of the experiments, the estimation results for the current model and the Li model are as follows: The average percent relative error rates are 6.02 and 15.1 and the coefficient of determination (R2) are 0.9865 and 0.9683, respectively.

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Section: Mass Flow and Energy Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Theoretical model of natural circulation flow and heat transfer within one-ended inclined pipe

Bayhan

Arslan

2022

Therm sci

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“…The rated power of the unit is 400 MW, and the generator capacity is 470 MVA. The figure shows the connection relationship between the CCPP component developed in this paper and the generator [7].…”

Section: Simulation Testmentioning

confidence: 99%

Data modelling and simulation control of steam heat circulation system in coal-fired power plant

Zhang

2021

THERM SCI

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To make up for the lack of domestic research on the dynamic model of the unit in a gas-steam combined cycle power plant, the thesis researched and established a real-time digital simulation model of the combined cycle power plant unit. Firstly, the theory found a non-real-time digital simulation model in MATLAB/SIMULINK environment. Then the paper converts it into C language code and uses the C Builder tool to encapsulate it into a simulation model that can run in real-time. Finally, the thesis conducted a simulation test on the model on real-time digital simulation and compared it with the field test results. The simulation results show that the combined cycle power plant unit model we have established can meet the real-time simulation requirements of the power system in terms of computational efficiency and model accuracy.

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“…This figure captures the variation in dryness fraction among the tubes due to poor flow distribution. It is difficult to measure the flow and dryness fraction of these tubes to validate the model [16,17]. A novel method of validation strategy is used.…”

Section: Model Validationmentioning

confidence: 99%

Steady State Two-Phase Flow Analysis of Natural Circulation in Hybrid Boiler

Elgandelwar¹,

Jha²,

Lele³

2020

IJHT

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In this present works, a generalized approach for the two-phase flow analysis of a natural circulation in hybrid boiler. The model uses the combination of node and loop equations and the Newton Raphson technique for the solution of the set of equations. Loop equations have been developed for each evaporator tube with the unique driving force and pressure drop of the concerned loop. Node equations are mainly developed for common risers and downcomers. A unique connectivity matrix has been used to correlate each branch flow with loop and node equations. The model is validated by a unique indirect method by comparing the actual water level and calculated water level. Experiments have been performed with uniform diameter of tubes in 53 channels circulating loop to find the volume of steam. The model shows good agreement with experimental investigations with a maximum of 3.57% absolute error. The model can be used for the design, analysis, and optimization of the natural circulation network.

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Design of a natural circulation circuit for 85 MW steam boiler

Cited by 16 publications

References 8 publications

Theoretical model of natural circulation flow and heat transfer within one-ended inclined pipe

Theoretical model of natural circulation flow and heat transfer within one-ended inclined pipe

Data modelling and simulation control of steam heat circulation system in coal-fired power plant

Steady State Two-Phase Flow Analysis of Natural Circulation in Hybrid Boiler

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