Thermal design of fire tube boiler with superheater and estimation of temperature increase in the superheater based on machine learning methods

This research utilizes MATLAB and Python coding to optimize the thermal design of an industrial shell and tube steam boiler with an internal superheater. The paper outlines a systematic approach to steam boiler design, including heat transfer dynamics analysis, superheater configuration optimization, and implementation. They take action to enhance the performance of the third pass. The shell and tube steam boiler specifications, including an internal superheater, have been determined, with a steam capacity of ۵ tons/hour and operating at a working pressure of ۱۰ bar. According to the results, the opt substantially impacted ۷۱ tubes in the second pass, each with a diameter of ۵ cm, and an additional ۸۲ tubes of identical size in the third pass (which includes revisions). To achieve a desired temperature increase of ۱۵ ℃ in the superheater, incorporating the superheater section into the fire tube resulted in a ۲۳.۷۲% increase in the third pass level compared to the scenario without a superheater. For every ۵ ℃ temperature increase in the superheater, the steam velocity in the third pass tubes decreases by approximately ۱m/s. Adding the superheater to the end of the third pass  reduces the temperature of this area from ۵۲۵ ℃ to ۵۰۰ ℃. Leveraging machine learning algorithms enabled the identification of parameters influencing the rise in superheater temperature. Linear regression emerged as the best predictor of superheater temperature increase among the eight models considered.

کلیدواژه ها:

Heat Transfer ، Heat Exchanger Design ، Fire Tube Boiler ، Superheater ، Machine Learning