Numerical investigation to study effect of radiation on thermal performance of radiator for onan cooling configuration of transformer

Chandak, Vipul; Paramane, Sachin B.; Veken, Wim Van der; Coddé, Joris

doi:10.1088/1757-899x/88/1/012033

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…The convection exists in both the internal insulating oil and the external cooling air. The radiation can mostly be found on the outwards facing surfaces, as discovered in [11]. All three mechanisms and the cooling media are considered and included in the full radiator CFD model.…”

Section: B Full Cfd Model Including Air Domainmentioning

confidence: 99%

A Reduced Radiator Model for Simplification of ONAN Transformer CFD Simulation

Zhao

Liu

Wilkinson³

et al. 2022

IEEE Trans. Power Delivery

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Section: B Full Cfd Model Including Air Domainmentioning

confidence: 99%

A Reduced Radiator Model for Simplification of ONAN Transformer CFD Simulation

Zhao

Liu

Wilkinson³

et al. 2022

IEEE Trans. Power Delivery

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“…As a result, optimization was obtained: reducing the cooling elements and their size, reconfiguring the design, changing the dimensions of the oil tank, and optimal location of the front and rear radiators on the oil tank. Chandak et al, [17] conducted a CFD analysis to investigate the effect of radiation on transformer coolant heat dissipation. Close inspection provides the possibility of increased heat dissipation even with the central coolant fins.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Electrical Power Transformer Fins Design Technology: Numerical Analysis and Experimental Validation

Ali Shokor Golam

2024

ARFMTS

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The study includes numerical analysis and experimental verification on an electrical power distribution transformer (250 kVA, 11 kW, Oil Natural Air Natural). ANSYS Fluent R3 2019 software was used to develop the numerical simulation model. The validity of the numerical model was confirmed by comparing the results of the numerical model and experimental data. The study aims to improve the efficiency and performance of electrical power distribution transformers by proposing a design that reduces the temperature of the transformer while maintaining its traditional size. Numerically, the effect of fin geometry on the temperature and density of transformer oil was studied. Four different fin designs were proposed and compared with the traditional design. According to the results, all proposed designs contributed to improving the cooling performance of the transformer compared to the traditional design. Design A is similar to the traditional transformer design, with the only modification being manipulation of the fin length, and achieves an average oil temperature reduction of 4 K. Design B showed the smallest temperature drop of the four designs, with a 3 K drop. Designs C and D include ventilation channels that match the shape of the fin, providing distinct design differences. The difference between both designs relied on the fact that for design C, the orthogonally of fin plates was retained. On the other hand, in design D, skewing of fin plates was introduced. Design D proved to be the most effective in reducing the average oil temperature, being reduced by 10 K. On the other hand, Design C reduced the average oil temperature by 7 K.

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“…The authors of the study introduced a methodology to estimate airflow velocity by considering the fan properties and radiator structure in thermal calculations. In their study, Chandak et al [19] conducted a numerical analysis to investigate the impact of radiation on the transfer of heat from a transformer radiator. The researchers observed that a consideration of radiation is necessary when examining the natural convection scenario.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Optimization of Radiator Configurations in Power Transformer Cooling

Koca,

Senturk,

Akbal

et al. 2024

Designs

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In this research, a numerical approach is created to assess the effective parameters of power transformer thermal management and, as a result, improve their cooling systems. This study analyzes the radiator’s thermal performance across several arrangements and optimizes the dimensions and configurations for varied cooling loads from a techno-economic perspective. The optimization criteria were the radiator’s height (L), fin spacing (D), and number of fins (N). Due to the great complexity of the generated models, the coupled thermo-hydraulic numerical simulations were carried out on a computer cluster. An in-house radiator test facility was constructed for the experiments in order to verify the numerical model. The simulation findings accord well with the empirically obtained values. A total of 76 radiator sets were investigated. Following that, the generated findings were used to perform an optimization analysis. Finally, the response surface method was used to establish an ideal radiator layout for the specified cooling capacity at the lowest possible cost. These findings reveal that the best cooling performance is obtained when the spacing between the fins is 50 mm. Cooling capacity per unit cost rises as radiator size decreases. The cost factor and geometric details were shown to have strong connections.

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Numerical investigation to study effect of radiation on thermal performance of radiator for onan cooling configuration of transformer

Cited by 6 publications

References 10 publications

A Reduced Radiator Model for Simplification of ONAN Transformer CFD Simulation

A Reduced Radiator Model for Simplification of ONAN Transformer CFD Simulation

Evaluation of the Electrical Power Transformer Fins Design Technology: Numerical Analysis and Experimental Validation

Techno-Economic Optimization of Radiator Configurations in Power Transformer Cooling

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