Based on the structural characteristics of small boilers,a new type of nested small vertical natural cycle oil-fired steam generator is designed.For the newly designed oil-fired steam generator,thermal calculations based on the na-ture of heat transfer are performed by using MATLAB programming to determine reasonable structural values;then a hydro-dynamic analysis model of the steam generator is established and the trends of the hydrodynamic characteristics parameters under different specifications and operating conditions are analyzed;finally,stagnation and backflow tests are performed for the designed steam generator that meets the thermal calculation errors and hydrodynamic characteristics parameters.The re-sults of the study show that the stagnation and backflow coefficients of the weakest heated water pipe are in accordance with the safety design specifications.An effective calculation method for the design of related small-scale natural circulation steam generators has been provided.
关键词
小型蒸汽发生器/自然循环/水动力/数值计算
Key words
small steam generator/natural circulation/hydrodynamics/numerical calculation
维普
万方数据