【Daily Question】Reissue 12.15 True or False: The larger the excess air coefficient, the higher the thermal efficiency of the heating furnace
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【Daily Question】Reissued: 12.15 True or False. The larger the excess air coefficient, the higher the thermal efficiency of the heating furnace. ( ) Answer: Wrong. (The correct answer is that a high excess air coefficient indicates an increased amount of air supplied to the furnace, which helps ensure complete combustion of the fuel. However, if this value is too high, it will result in more heat being carried away by the flue gases, thereby reducing the heating efficiency of the furnace.) ）
The larger the excess air coefficient, the higher the thermal efficiency of the furnace. ( Wrong )
The larger the excess air coefficient, the higher the thermal efficiency of the furnace. ( ) The excess air coefficient refers to the ratio of the actual amount of air used in a heating furnace to the theoretical amount of air required for combustion. A high excess air coefficient indicates an excessive amount of air, which results in more heat being carried away by the flue gases, thereby reducing the thermal efficiency
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The larger the excess air coefficient, the higher the thermal efficiency of the furnace. ( Wrong )
The larger the excess air coefficient, the higher the thermal efficiency of the furnace. ( Wrong )
The larger the excess air coefficient, the higher the thermal efficiency of the furnace. ( Wrong )
The larger the excess air coefficient, the higher the thermal efficiency of the furnace. ( X ) A high excess air coefficient indicates that a larger amount of air enters the furnace, which helps to ensure complete combustion of the fuel. However, if this value is too high, it will increase the amount of heat carried away by the flue gases, thereby reducing the thermal efficiency of the heating furnace.
The larger the excess air coefficient, the higher the thermal efficiency of the heating furnace. ( × )