Скачать с ютуб Function Of In-Bed Heater in Boiler in Hindi в хорошем качестве

Function Of In-Bed Heater in Boiler in Hindi

Function Of In-Bed Heater in Boiler in Hindi Function of In-Bed Heater in a Boiler In modern boiler systems, particularly Fluidized Bed Combustion (FBC) boilers such as Atmospheric Fluidized Bed Combustion (AFBC) and Circulating Fluidized Bed Combustion (CFBC), in-bed heaters play a crucial role in enhancing boiler efficiency, reducing startup time, and maintaining combustion stability. These heaters are strategically located within the fluidized bed zone of the furnace and are directly exposed to the turbulent, high-temperature environment created during fluidization. 1. Support During Boiler Start-Up One of the primary functions of in-bed heaters is to assist in heating the bed material during the start-up phase of the boiler. Before combustion begins, the bed material (usually sand or ash) needs to be brought up to a minimum ignition temperature, typically around 500°C to 600°C, depending on the fuel type. In-bed heaters supply the required thermal energy to raise the bed temperature to the desired level, allowing the fuel to ignite efficiently. Without in-bed heaters, the start-up process would rely solely on external burners or take significantly longer, increasing operational costs and reducing responsiveness. 2. Stabilization of Combustion In-bed heaters also contribute to maintaining uniform temperature within the fluidized bed. In cases where the fuel has inconsistent calorific value or moisture content, the heat generated by combustion may fluctuate. In-bed heaters provide thermal support to maintain a stable combustion temperature, ensuring continuous and complete combustion of fuel particles. This is especially important when burning low-grade fuels such as biomass, lignite, or waste materials that may not always provide consistent energy output. 3. Improved Heat Transfer Efficiency Placed directly inside the fluidized bed, in-bed heaters take advantage of high heat transfer rates due to the intense turbulence and contact with hot particles. These heaters typically consist of coiled tubes through which water or steam flows. As the hot bed particles constantly strike and flow around these tubes, they provide excellent convective and conductive heat transfer, helping generate steam more efficiently. This localized heat transfer reduces the thermal load on superheaters and economizers, improving the overall thermal efficiency of the boiler. 4. Reduction in Auxiliary Fuel Usage By supporting combustion and maintaining bed temperature, in-bed heaters reduce the need for auxiliary fuel during start-up or low-load conditions. This leads to lower fuel consumption, cost savings, and reduced emissions, aligning with the goals of energy efficiency and environmental compliance. PLEASE JOIN OUR FACEBOOK GROUPS FOR GETTING MORE POWER PLANT INFORMATION FACEBOOK GROUPS ARE FOLLOWING. PLEASE CLICK ON THE LINK AND JOIN THE GROUP 1. Boiler Wiki: - https://www.boilerwiki.com/ 2. ASK POWER PLANT FACEBOOK PAGE: -   / askpowerplant   3. TARGET BOE (BOILER OPERATION ENGINEER):-   / 354091798371980   4. BOILER AND TURBINE PROFESSIONALS   / boilerandturbineprofessionals   5. POWER PLANT QUESTION AND ANSWER   / 426498917727416   Disclaimer A video is for educational purposes only. Copyright Disclaimer under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is permitted by copyright statutes that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favour of fair use.