“FLUIDIZED BED COMBUSTION THERMIC FLUID HEATER WITH INTERNAL GAS RE-CIRCULATION SYSTEM”

摘要

An improved fluidized bed combustion thermic fluid heater with internal gas re-circulation system (100) which facilitates the cooling by using re-circulated flue gas which replaces greater amount of excess air which is normally required to maintain bed temperature as the said flue gas has high heat capacity than air to carry more heat away from the fuel bed maintaining the bed temperature within safe operation limit also significantly increasing the thermal efficiency making the entire system highly efficient. (Fig.2)