Simulation of pool boiling regimes for a sphere using a hydrogen evolving system

Anode influence on the electroplating system was investigated when natural convection heat transfer in a packed bed is simulated by mass transfer based on the analogy. The cathode to anode area ratio (A c /A a ) was varied from 1 to 50. For three different anode positions of top and bottom of test section and corner of acryl tank, the distance of anode to cathode bed was varied: 0.01, 0.03, 0.07 m in all heating spheres experiments. The sphere diameter was 0.006 m, which corresponds to Ra d of 1.83×10 7 . The duct diameter was 0.06 m and bed height was 0.025 m. The Sc corresponding to the Pr was 2014. The verification test result for a single heating sphere in unheated packed bed agreed well with the extrapolated correlation of Achenbach (1995). The anode influence experiments for all heating spheres showed that the limitation of the area ratio is about 20. The desirable positions of anode are the bottom of test section and corner of the acryl tank, regardless of the distance between the anode and cathode packed bed.

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“…Thus the cathode acts as a heated surface. In our laboratory, many researches have been conducted using this method [36][37][38][39][40].…”

Section: Electroplating System Of Mass Transfermentioning

confidence: 99%

Anode influence on the electrochemical realization of packed bed heat transfer

2021

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“…Many researchers investigated boiling phenomena over the spheres through numerical and experimental approaches 2–9 . With the advantage of numerical techniques, transient and dynamic study of the simulation of the interfacial phase‐change became more promising.…”

Section: Introductionmentioning

confidence: 99%

“…Sapozhnikov et al 17 used gradient of heatmetry and high‐speed image analysis to study heat transfer between spherical surface and liquid during boiling phenomena. Moon and Chung 6 simulated electrical reduction of hydrogen during pool boiling over the sphere. A 1.5 M sulfuric acid as a fluid and a heated sphere of copper and stainless steel (SUS316L) as a cathode were used.…”

Section: Introductionmentioning

confidence: 99%

“…1 Many researchers investigated boiling phenomena over the spheres through numerical and experimental approaches. [2][3][4][5][6][7][8][9] With the advantage of numerical techniques, transient and dynamic study of the simulation of the interfacial phase-change became more promising. Various methods to track spatial and temporal interface for bubble interface and dynamics have been adopted, such as front tracking, 10 the volume of fluid (VOF) 9,11 and level set (LS) 12 method.…”

Section: Introductionmentioning

confidence: 99%

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