Domestic Science. a book for Use in Schools And for General Reading
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In our eReader you can find the full English version of the book. Read Domestic Science. a book for Use in Schools And for General Reading Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Domestic Science. a book for Use in Schools And for General Reading
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of the burnmg candle.
The hydrogen and the carbon of wood and coal unite with the oxygen of the air, and in so doing they evolve a large and measurable quantity of heat. Fuels are etticient in proportion to the amount of hydrogen and carbon they contain. All natural fuels, however, con- tain a considerable quantity of incombustible matter ; the solid portions in the form of ash remain after the burniiia'.
PRODUCTION OF HEAT. 113 Another cause of diminution in the heating- vahie of fuels lies in... the amount of water contained by them.
"We all know that green woods, rich in sap, are far less eflScient fuels than are dry woods. Water in fuels lowers the percentage of available hydrogen and car- bon ; its presence retards the combustive process, by absorbing much heat as the burning proceeds ; and when the boiling temperature is reached, the water is converted into steam, and thus a large amount of heat is rendered latent, and is carried off by the escaping vapor.
Woods may be ranged in the following order with respect to their heating powers, the poor kinds being named first: White pine, poplar, soft maple, cherry,/- cedar, elm, hard maple, walnut, beech, apple, ash, white oak, hickory.
What to read after Domestic Science. a book for Use in Schools And for General Reading?
You can find similar books in the "Read Also" column, or choose other free books by Talmage James Edward to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
of the burnmg candle.
The hydrogen and the carbon of wood and coal unite with the oxygen of the air, and in so doing they evolve a large and measurable quantity of heat. Fuels are etticient in proportion to the amount of hydrogen and carbon they contain. All natural fuels, however, con- tain a considerable quantity of incombustible matter ; the solid portions in the form of ash remain after the burniiia'.
PRODUCTION OF HEAT. 113 Another cause of diminution in the heating- vahie of fuels lies in... the amount of water contained by them.
"We all know that green woods, rich in sap, are far less eflScient fuels than are dry woods. Water in fuels lowers the percentage of available hydrogen and car- bon ; its presence retards the combustive process, by absorbing much heat as the burning proceeds ; and when the boiling temperature is reached, the water is converted into steam, and thus a large amount of heat is rendered latent, and is carried off by the escaping vapor.
Woods may be ranged in the following order with respect to their heating powers, the poor kinds being named first: White pine, poplar, soft maple, cherry,/- cedar, elm, hard maple, walnut, beech, apple, ash, white oak, hickory.
What to read after Domestic Science. a book for Use in Schools And for General Reading?
You can find similar books in the "Read Also" column, or choose other free books by Talmage James Edward to read onlineMoreLess
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