SHAWORDS

I have been... particular in explaining these first principles, becaus — Fireplace

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"I have been... particular in explaining these first principles, because for want of clear ideas respecting them, much fruitless expence has been occasioned... whole stacks having been pulled down and rebuilt with funnels of different forms, imagined more powerful in drawing smoke, but having still the same height and the same opening below, have performed no better than their predecessors."
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Fireplace
Fireplace
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A fireplace or hearth is a structure made of brick, stone or metal designed to contain a fire. Fireplaces are used for the relaxing ambiance they create and for heating a room. Modern fireplaces vary in heat efficiency, depending on the design.

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"[W]hen the grate is brought forward, there is a great vacancy left between it and the back of the chimney, so... air passes under the grate, and ascends behind it very little rarefied; so... there will be as much lost in this way as will be gained in the other: and as there is not enough of heated air... to make the vapour ascend with rapidity, they are often choaked with thick fuliginous vapours hanging in them, almost in equilibrio with the rest of the atmosphere, so that the least puff of wind beats them down the chimney, and pushes the smoke into the room; whereas, when it is far back, it is driven down upon the hearth, and rises upwards again when the gust is over, and a great deal of it is catched within the mantle as it rises, which in the other case would have been dispersed through the room."
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"Unless suitable fresh air inlets are provided, this form of stove will cause the room to be draughty, the strong current of warm air up the flue drawing cold air in through the crevices in the doors and windows. The best form of open fireplace is the ventilating stove, in which fresh air is passed around the back and sides of the stove before being admitted through convenient openings into the room. This has immense advantages over the ordinary type of fireplace. The illustrations show two forms of ventilating fireplace..."
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"I will suppose that in altering such a Chimney it is found necessary, in order to accommodate the Fire-place to a grate or stove already on hand, to make the Fire-place sixteen inches wide.—In that case, I should merely increase the width, of the back, to the dimensions required, without; altering the depth of the Chimney, or increasing the width of the opening of the Chimney in front.—The covings... would be somewhat reduced in their width... and their position... would be a little changed; but these alterations would produce no bad effects of any considerable consequence, and would be much less likely to injure the Fire-place..."
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"I interrupted the old man in midsentence and stood straight up from the rocker. It felt as if a pulse of energy ran up my spine, compressing my lungs, electrifying my skin, bringing the hairs on the back of my neck to full alert. I moved closer to the fireplace, unable to absorb its heat. "Are you saying what I think youre saying?" My brain was taking on too much knowledge. There was overflow and I needed to shake off the excess. The old man looked at nothing and said, "We are Gods debris."
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Fireplace