Mathematical modeling and control of thermal plant in the district heating system of Korea

Choi, Soon-Young; Yoo, Kee-Youn; Lee, Jeongbin; Shin, Chee Burm; Park, Myung-June

doi:10.1016/j.applthermaleng.2010.05.014

Cited by 21 publications

(6 citation statements)

References 16 publications

(17 reference statements)

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“…Respectively, the steady-state model was used to study the impact of important system parameters, and the dynamic model based on energy balance was used for the efficiency analysis of the system. Unlike the above studies, Choi et al considered the thermal power plant as the core component of the district heating system, and the validation of the model was verified by the case study [9]. Based on modeling, researchers who have a special interest in the field of MSDHS optimization could focus on the single-objective optimization of the system.…”

Section: A Backgroundmentioning

confidence: 99%

Load Distribution Optimization of Multi-Source District Heating System Based on Fuzzy Analytic Hierarchy Process

et al. 2020

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Section: A Backgroundmentioning

confidence: 99%

Load Distribution Optimization of Multi-Source District Heating System Based on Fuzzy Analytic Hierarchy Process

et al. 2020

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“…The metamodel is used as an analytical and explanatory tool for interpreting the relationship between production costs and profits from sales of heat and electricity. In [8], it is assumed that optimal operating conditions will be achieved by adjusting the temperature in steam boilers by using the predictive model with the help of Simulink and MATLAB software packages. In [9], the program algorithm for stabilization and optimal control of boilers with the use of calculations and determination of optimal load values for each boiler included in operation is given.…”

Section: Related Workmentioning

confidence: 99%

Steam Boiler Control System Using Tensor Analysis Methods

Sidletskyi¹

2019

IJC

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Approaches to the control of steam boilers are analyzed in the article. It is recommended to use the method of tensor analysis for identification of the current state of the heat-energy process for conducting regulating action. It is suggested that the vectors of the input and output variables of the technological process with a tensor are to be connected, which for orthonormal systems adopts a diagonal form that facilitates the calculation of regulating actions. This article presents the results of simulation when traditional methods of calculating the coefficients of the regulator are used and the calculation of the regulating action using a tensor model. The use of such a technique allows conducting the necessary regulating actions taking into account the operation of the individual apparatus. So, its operation is coordinated as a structural unit in the technological line in case of occurrence of deviations and transients.

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“…Generally, pipelines in DH distribution systems use a thermally insulated coating to minimize heat loss during transfer. As shown in Figure 1, the coating consists of two layers: an inner layer of polyurethane foam (PUR) to reduce heat loss, and an outer layer of high-density polyethylene (HDPE) to protect the PUR [3]. The coatings effectively mitigate corrosion by blocking the outer environment, which contains corrosive elements such as water, oxygen, and chloride ions, when the coating is maintained perfectly.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Cathodic Protection Design for Pre-Insulated Pipeline in District Heating System Using Computational Simulation

Hong

Kim

2019

Materials

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Cathodic protection (CP) has been used as a primary method in the control of corrosion, therefore it is regarded as the most effective way for protecting buried pipelines. However, it is difficult to apply CP to a pipeline for district heating distribution systems, because the pipeline has thermally insulated coatings which could disturb the CP. Theoretical calculation and field tests alone are not enough for a reliable CP design, and therefore additional CP design methods such as computational analysis should be used. In this study, the CP design for pre-insulated pipelines is tested considering several environmental factors, such as temperature and coating defect ratio. Additionally, computational analysis is performed to verify and optimize the CP design. The simulation results based on theoretical methods alone failed to satisfy the CP criteria. Then, a re-design is conducted considering the IR drop. Consequently, all of the simulation results of defective pipelines satisfied the CP criteria after adding the proper CP current.

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Mathematical modeling and control of thermal plant in the district heating system of Korea

Cited by 21 publications

References 16 publications

Load Distribution Optimization of Multi-Source District Heating System Based on Fuzzy Analytic Hierarchy Process

Load Distribution Optimization of Multi-Source District Heating System Based on Fuzzy Analytic Hierarchy Process

Steam Boiler Control System Using Tensor Analysis Methods

Optimization of Cathodic Protection Design for Pre-Insulated Pipeline in District Heating System Using Computational Simulation

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