The Project Gutenberg EBook of Encyclopaedia Britannica, 11th Edition,
Volume 8, Slice 3, by Various

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Title: Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3
"Destructors" to "Diameter"

Author: Various

Release Date: September 24, 2009 [EBook #30073]

Language: English

Character set encoding: ASCII

*** START OF THIS PROJECT GUTENBERG EBOOK ENCYC. BRITANNICA, VOL 8, SLICE 3 ***

Produced by Don Kretz, Marius Borror, Juliet Sutherland
and the Online Distributed Proofreading Team at
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Transcriber's note: A few typographical errors have been corrected: they
are listed at the end of the text. Due to space constraints, italics
denoting underscores were not used in the tables.

THE ENCYCLOPAEDIA BRITANNICA

A DICTIONARY OF ARTS, SCIENCES, LITERATURE AND GENERAL INFORMATION

ELEVENTH EDITION

VOLUME VIII slice III

Destructor to Diameter

DESTRUCTOR (_continued from volume 8, slice 2, page 0108._)
... in main flues, &c. (g) The chimney draught must be assisted with
forced draught from fans or steam jet to a pressure of 1 1/2 in. to 2
in. under grates by water-gauge. (h) Where a destructor is required to
work without risk of nuisance to the neighbouring inhabitants, its
efficiency as a refuse destructor plant must be primarily kept in view
in designing the works, steam-raising being regarded as a secondary
consideration. Boilers should not be placed immediately over a furnace
so as to present a large cooling surface, whereby the temperature of
the gases is reduced before the organic matter has been thoroughly
burned. (i) Where steam-power and a high fuel efficiency are desired a
large percentage of CO_{2} should be sought in the furnaces with as
little excess of air as possible, and the flue gases should be
utilized in heating the air-supply to the grates, and the feed-water
to the boilers. (j) Ample boiler capacity and hot-water storage
feed-tanks should be included in the design where steam-power is
required.

[Sidenote: Cost.]

As to the initia