Integrated Furnace Modeling and Circulation Analysis of Natural Circulation Hybrid Boiler

An integrated furnace model and circulation study of a hybrid boiler with natural circulation is the main objectives of the current work, which is being conducted under various operating conditions. To comprehend the safe operation of a hybrid boiler, heat flux, boiling heat transfer, nucleate boiling, and tube overheating are examined. Analyze the circulation ratio, dryness fraction, void fraction, heat flow, pressure, and liquid velocity. In a natural circulation boiler, the circulation ratio controls critical heat flow and skin temperature. Circulation ratio is influenced by boiler pressure, liquid velocity and maximum heat flow. This study supports the design of hybrid boilers with natural circulation. A flow distribution analysis tool for natural circulation boilers based on Excel will be made available by the study. The model's nonlinear equations for nodes and loops are solved via Newton Raphson. Pressure loss and driving force are included in the loop calculations for every evaporator tube. Typical downcomers and risers make use of node equations. Loop and node equations for every branch flow are connected by a distinct connection matrix. A new indirect method is used to validate the model. The experimental data is within 3.57% absolute error of the model. Natural circulation networks are constructed, analyzed and optimized.