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  • W.B.C.S. Main 2018 Question Answer – ELECTRICAL ENGINEERING – Balanced Draught Must Be Used In Thermal Power Plants.
    Posted on January 16th, 2019 in Electrical Engineering
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    W.B.C.S. Main 2018 Question Answer – ELECTRICAL ENGINEERING – Balanced Draught Must Be Used In Thermal Power Plants.

    WBCS ঐচ্ছিক ২০১৮ প্রশ্নের উত্তর – বৈদ্যুতিক  ইঞ্জিনিয়ারিং – ভারসাম্য খসড়াটি তাপীয় বিদ্যুৎ কেন্দ্রগুলিতে অবশ্যই ব্যবহার করা উচিত।

    1)Balanced draught must be used in thermal power plants

    Draft or draught (not to be confused with drought) means flow of air. A flow of air or draught is required inside the boiler of a thermal power plant to help in complete combustion of fuel.Continue Reading W.B.C.S. Main 2018 Question Answer – ELECTRICAL ENGINEERING – Balanced Draught Must Be Used In Thermal Power Plants.

    Now this air can be fed into the boiler furnace by means of forcing it through a fan installed before the furnace. Such a design is called forced draught. This creates a higher pressure inside the furnace compared to the atmospheric pressure.

    Alternatively, air can be pulled into the furnace by means of installing fans after the furnace. This design is called induced draught. This creates a negative pressure inside the furnace compared to the atmospheric pressure.

    When both of these systems exist in the same furnace then it is called a balanced draught. The balanced draught design maintains flow of air inside the furnace but with minimum pressure difference from the atmospheric pressure.

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