File:School architecture; a handy manual for the use of architects and school authorities (1910) (14781464472).jpg

Identifier: schoolarchitectu00bruc (find matches)
Title: School architecture; a handy manual for the use of architects and school authorities
Year: 1910 (1910s)
Authors: Bruce, William George, 1856-1949 Bruce, William Conrad, 1882- Bruce, Frank Milton, 1885- (from old catalog)
Subjects: School buildings
Publisher: Milwaukee, Johnson service company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
al in this class of heatingsystems that all joints in the furnaces shall bemade air tight and thus dust and gas proof. Steam Heating.—The popularity of steamfor the heating of school buildings is due to avariety of causes. Primarily, it is cheap to installand eminently serviceable. On account of theintensity of steam heat much piping or radiatingsurface is not necessary. Single piping through-out is only necessary, with one series of returnsin the basement. Unused portions of the sys-tem can be shut off without danger of frost andat a saving of heat. In extremely cold weathersteam rarely fails to respond when other sys-tems cannot be made to work. Steam heat de-livers from seventy to eighty per cent, of theheat of the fuel to the radiating surface. Despite these advantages, however, the argu-ment of burnt air during intense cold has beenused against the system of steam heating. Steamenters the piping at a high temperature and con-veying this heat to the surface seems to burn the 151
Text Appearing After Image:
u £ C3 Hi- f-v I/) HH 1)CO U 152 Heating and Ventilation particles of dust which come into contact with thispiping. In a low-pressure system with indirectradiation this difficulty is not met with and steamwill prove most satisfactory. German authoritiesprefer a low-pressure, indirect steam system.Vacuum steam heating systems produce in anabsolute vacuum of 29.92 inches water a vaporat 98 degrees; in a 20-inch vacuum at 161.2 de-grees. They have been used with success insmall school buildings. Hot Water Heating.—The advantagesargued in favor of hot water heating are especial-ly economy of fuel and satisfaction in the de-grees of heating. Tests have absolutely proventhat while the first cost of installation consider-ably exceeds that of the cost of direct steam heat-ing the amount of fuel saved by hot water systemwarrants the increased expenditure. Hot wateris easily operated, and when employed in an in-direct low-pressure system is excellent. Care,however, should be taken that in th

Note About Images