Why hard water is not used in industrial boilers for producing steam?
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Hard water has minerals which will coat the inside of boiler tubes for water tube boilers and the outside of tubes for fire tube boilers. Either way, when this occurs, the heat of the fire cannot transfer easily through the tubes to the water because the attached minerals is a very good insulator. This means the metal boiler tubes get hotter than designed and can begin to sag. Ultimately the tubes can overheat, and pinhole leaks can begin to occur, or a major overheating event of sagging tubes.
This then requires retubing of the boiler and is a major loss.
This then requires retubing of the boiler and is a major loss.
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Answer:
calcium carbonate is a bad conductor of heat, so a lot of fuel is wasted during the steam generation. this may even lead to bursting of the boiler. so, hard water is not fit for industrial boilers for producing steam.
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