Excerpt from Boiler Water ysis<br/><br/>The above mentioned compounds of calcium and magnew sium are the cause of most of the trouble with boiler waters, which deposit scale and they are also the cause of a great loss in the thermal efficiency of a steam power plant. Rankine states that if the conduction of heat of wrought iron is taken as 1, that of corper is of slate of brick of calcium carbonate of calcium sulphate Experiments run under the dire0~ tion of Breckenridge show that the loss in efficiency due to a scale thick was per cent.
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