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国际计算热科学期刊
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN 打印: 1940-2503
ISSN 在线: 1940-2554

国际计算热科学期刊

DOI: 10.1615/ComputThermalScien.2020033963
Forthcoming Article

Steady-State Flow Distribution Analysis of Natural Circulation in Water Tube Boiler

Atul Elgandelwar
Research Scholar, Mechanical Engineering Department, Maharashtra Institute of Technology Kothrud, Pune. SPPU (India)
RS Jha
Research Scholar, School of Mechanical Engineering, MIT-WPU & Head, Innovation at Heating SBU, Thermax India Limited, Pune. (India)
Mandar Lele
Professor, Mechanical Engineering Department, MIT College of Engineering Kothrud, Pune. SPPU (India)

ABSTRACT

The paper presents a generalized approach for the flow distribution analysis of a natural circulation boiler. The model uses the combination of node and loop equations and 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. The model shows good agreement with experimental data with a maximum of 4 % absolute error. The model can be used for the design, analysis and optimization of the natural circulation network