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Then the vitiated air is drawn off through registers both at the top and bottom of the room, opening into a heated exhausting flue, through which the constantly ascending current of warm air carries it off. These heated coils are often used for warming houses without any arrangement for carrying off the vitiated air, when, of course, their peculiar usefulness is gone.
This was done, not only that we might have warmth, and be able, if need be, to cook here, but to increase the draught upwards, and so bring down more air from the other flue." The lads, however, found that there was no need for apology, for there were upon the dishes two chickens, a raised pasty large enough for a dozen people, and a variety of sweets and conserves. The wine, too, was superb.
Sir Harry was a tall, wan, pale young man, with a strong tendency to delirium tremens; that, and consumption, appeared to be running a match for his person. He was a harum-scarum fellow, all strings, and tapes, and ends, and flue. He looked as if he slept in his clothes.
Where one flue has two stoves or fireplaces, in rooms one above the other, in certain states of the atmosphere, the lower room, being the warmer, the colder air and carbonic acid in the room above will pass down into the lower room through the opening for the stove or the fireplace.
The Franklin stove, which was merely an iron fire place set into the chimney, had the less direct flue of the two, so that the package had fallen where it was found. During the rest of the day, Leopold's thoughts were fixed upon the long-lost diary, for which Miss Liverage and himself had vainly searched.
This idea created considerable sensation, but a correspondent with a long train of letters draggling after his name pointed out that a monkey small enough to get down so narrow a flue would not be strong enough to inflict so deep a wound.
Another cause of smoky chimnies is too short a funnel, as, in this case, the ascending current will not always have sufficient power to direct the smoke up the flue.
Q. will you state the amount of heating surface and grate surface necessary to evaporate a given quantity of water? A. The number of square feet of heating or flue surface, required to evaporate a cubic foot of water per hour, is about 70 square feet in Cornish boilers, 8 to 11 square feet in land and marine boilers, and 5 or 6 square feet in locomotive boilers.
Before any sound had reached the watcher, who was sleeping in the grated cell which opened into the dormitory, the wall had, been pierced, the chimney scaled, the iron grating which barred the upper orifice of the flue forced, and the two redoubtable ruffians were on the roof. The wind and rain redoubled, the roof was slippery. "What a good night to leg it!" said Brujon.
There was now disclosed the mouth of an old oven, which was apparently contrived in the thickness of the wall, and having fallen into disuse, had been closed up with bricks in this manner. It was formed after the simple old-fashioned plan of oven-building a mere oblate cavity without a flue.
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