File:Pacific service magazine (1918) (14803278633).jpg

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English:

Identifier: pacificservicema1019paci (find matches)
Title: Pacific service magazine
Year: 1912 (1910s)
Authors: Pacific Gas and Electric Company
Subjects: Pacific Gas and Electric Company Electric utilities Electrical engineering Public utilities
Publisher: San Francisco : Pacific Gas and Electric Company
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library

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Text Appearing Before Image:
Manager A. L. Becker casting an eye over a newly completedship. certain proportion of air must be used inorder to support combustion. Tliis airmay be supplied at the point of flame, or,in the case of gas fuel, can be mixed priorto combustion. To obtain the localizedextreme temperature desired in many ap-plications the latter course is desirable.The superefiiciency, then, of a gas flamedepends to a great extent upon this mix-ing process. In large installations the saving in fuelthat can be effected by totally eliminatingthe human element in obtaining this mix-ture and substituting mechanical meansoftentimes justifies a large expenditure
Text Appearing After Image:
One of the Selas machines installed at the Schaw-Batcherplant. in securing apparatus designedfor the accurate premixing oper-ation. Such was the case at thisplant. Here the Selas apparatus isused. The machine consists offour essential parts: A pressure-reducing valve which reduces toatmospheric pressure the gas,which is bound to be suppliedwith some variation in pressurefrom the gas companys mains;a mixing chamber in which thegas and air of atmospheric pres-sures are admitted in the properproportion, usually one part ofgas to two parts of air; a com-pressor by means of which the^ mixture is delivered under theK desired pressure through the dis-tributing pipes to the variousburners; a pressure governorwhich controls the delivery pressure, atthe same time acting as a bypass for anyquantity of air and gas that may bemixed by the machine over and above theamount desired at any period. It can be seen that the possibilities ofincreasing efficiencies of operation by theuse of such apparatus

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https://www.flickr.com/photos/internetarchivebookimages/14803278633/

Author Internet Archive Book Images
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Volume
InfoField
1918
Flickr tags
InfoField
  • bookid:pacificservicema1019paci
  • bookyear:1912
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Pacific_Gas_and_Electric_Company
  • booksubject:Pacific_Gas_and_Electric_Company
  • booksubject:Electric_utilities
  • booksubject:Electrical_engineering
  • booksubject:Public_utilities
  • bookpublisher:San_Francisco___Pacific_Gas_and_Electric_Company
  • bookcontributor:San_Francisco_Public_Library
  • booksponsor:San_Francisco_Public_Library
  • bookleafnumber:328
  • bookcollection:sanfranciscopubliclibrary
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014

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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14803278633. It was reviewed on 17 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

17 September 2015

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