APfilL 2, 1908. 



The Weekly Florists^ Review. 



79 



however, you contemplate adding to the 

 present glass area, it itiay be wise to in- 

 stall the larger boiler. L. C. C. 



4 m 



FROM BOILER TO GRATES. 



In the quotation from "How to Burn 

 Illinois Coal Without Snroke, " found in 

 the Review of March 12, page 80, it is 

 stated : ' * Having in mind the horizontal 

 iire tube boiler, the distance from the 

 boiler to the grates should be from thirty 

 to thirty-four inches. At this distance 

 the flame from Illinois coal will sweep 

 along the bottom of the boiler and much 

 smoke will result. Still it must be borne 

 in mind that a large part of the heat to 

 be obtained from the burning of the fixed 

 larbon part of these coals is transferred 

 to the shell in the form of radiant heat 

 and for this purpose the grate should be 

 near the boiler." 



It is difficult to understand the above 

 and I would be glad of an explanation, 

 as I am about to install a horizontal fire 

 tube boiler in part of my plant and 

 would like to know how high to set the 

 boiler above the grates. There is no 

 ' ' front, ' ' so the height the maker in- 

 tended is not obtainable. The boiler was 

 ill use last year, but on account of lack 

 (if head room was set fourteen inches 

 above the grates. It did not work well, 

 taking a long time to heat. Now, what 

 is the best height to set the boiler for 

 hot water, using washed nut Illinois coal? 

 There is an indefinable distance between 

 thirty to thirty-four inches and "near 

 the boiler." J. Y. L. 



For many of the western coals a dis- 

 tance of about thirty-four inches between 

 the grate and boiler appears to give 

 tlie best satisfaction in a horizontal re- 

 turn tubular boiler setting. Increasing 

 the distance from, say, fourteen inches 

 or sixteen inches to about thirty-four 

 inches, makes the operation of the fur- 

 nace more satisfactory, especially with 

 respect to smoke control. Simply lower- 

 ing the grates, however, will not make 

 a setting of this kind operate without 

 smoke, and lowering the grates a dis- 

 tance much greater than about three feet 

 probably results in a loss due 'to heat not 

 being transferred to the shell from the 

 fire bed in the form of radiant heat. 



I believe that a careful reading of the 

 paragraphs "Smoke Prevention with the 

 Horizontal Fire Tube Boiler" and "The 

 Distance Between the Boiler and the 

 ('■rates," in Bulletin No. 1.5 of the En- 

 gineering Experiment Station, will be of 

 service in this connection. Parties inter- 

 ested can obtain a copy of this bulletin 

 liy addressing the Engineering Experi- 

 ment Station, University of Illinois, Vr- 

 ''■■>na, 111. L. P. Breckexridge. 



HEATING TABLES. 



The later-day catalogues of tiie boiler 



:ii;iiuifaeturers are veritable encycl()|)e- 



'iias of iieating data; asiile from the ar- 



UHinents for that i)articnilar make ut' 



'"'i'cr, they contain many pages of tables 



'lid jlirections necessary to consider in in- 



tailing any heating plant. For instance, 



'!•' general catalogue of the Ignited 



■^tates Heater ("o., manufacturer of the 



' iip'tid boiler, contains a table showing 



"k' iiiininiuni size of main to be used in 



■^iipi'lying direct radiation at ditferent 



li><tanccs from the boiler. Too many flo- 



: ists who do their own piping fail to con- 



-ider that the distance the hot water or 



team travels from boiler to coils is an 



iiportant factor in determining the size 



* the flow, second only to the amount of 



"BURNHAM " WHYS 



Easy to erect — no bricking in. 

 Easy to add sections. 

 Easy to clean every flue. 

 Requires least possible attention. 

 Unequaled for economy. 



57 Sizes— Burns hard or soft coal 

 Send for catalog 



Lord & Burnham Company 



BOSTON 

 819 Tremont Building 



MAIN SALES OFFICE: 

 New York. - - 1133 Broadway 



PHILADELPHIA 

 12(5 Filbert Street 



Mention The Review when you write. 



The Standard 

 Steam Trap 



Is acknowledged the best for the 

 florist because it is durable, and does 

 its work without trouble and annoy- 

 ance, saving its cost by the economy 

 in coal bills. 



E. HIPPARD, Youngstown, Ohio 



Mention The Reylew when yoa write. 



