94 



The Florists^ Review 



June 5, 1913. 



=S\ 



Where There Is Coodeflsatioo 



— there is need for a Morehead Steam Trap. Condensation in 

 steam lines is akin to matter out of place — means wasted energy. 

 If your lines are sluggish — if your houses are not of uniform 

 temperature, write us. We guarantee to drain your lines per- 

 fectly — return the pure, hot condensation to your boiler without 

 pump or injector or make no charge for the trial. Obey that 

 impulse — write now. 



Morehead Manufacturing Company 



Maw York 

 Ghlcaco 



Wichita, Kan. 

 New Orleans, La. 



DEPT. "M," DETROIT, MICHIQAN 



stocks Carried in 



Philadelphia Memphis, Tenn. 



Birmingham. Ala. Los Angeles 



Chatham, Ontario 

 San Francisco 



Mention The Review when you write. 



«oils in a greenhouse. We believe we 

 have seen this in an old issue of The 

 Review, but neglected to cut it out, as 

 we do not find it in our scrap book. 



H. & O. 



A wrought iron pipe 100 feet long 

 will expand as follows, the figures at 

 the left being the temperature of the 

 pipe at the time of filling, and the head- 

 ings of the columns in the center the de- 

 grees of heat in the pipes in operation: 



Temperature In Operation Exp's'n 

 At start 180° 215° 



Zero 1.44 1.72 inches 



82 1.18 1.47 Inches 



64 03 1.21 Inches 



EADIATINO SUEFACE OF PIPE. 



It is evident, from the natyre of many 

 inquiries received by The Review, that a 

 considerable number of florists have no 

 way of estimating the extent of radiat- 

 ing surface in a specified quantity of 

 piping. In other words, they have no 

 way of estimating what amount of pip- 

 ing is necessary to supply the required 

 radiation. When they are informed 

 that a certain size of greenhouse re- 

 quires a certain number of square feet 

 of radiation, they are still in doubt as to 

 how much piping they must install. 



The following table shows the amount 

 of radiating surface, expressed in deci- 

 mal fractions of a square foot, in each 

 lineal foot of pipe of the sizes commonly 

 used: 



Size Pipe 8q. Ft. Slie Pipe. Sq. Ft. 



1-lnch 344 2%-lnch 7.'i3 



114-Inch 435 3-lnch 916 



1%-lnch 497 3V6-lnch 1.047 



2-lnch 622 4 Inch 1.17S 



By means of this table, it is easy, of 

 course, to compute the radiating sur- 

 face in any stated quantity of piping. 

 In 125 lineal feet of 2-inch pipe, for 

 instance, there are 125 times .622, or 

 77.75 (nearly 78) square feet of radia- 

 tion. 



AMOUNT OF EADIATION. 



In response to several requests the 

 following tables are reprinted, giving 

 the data on which heating jobs ordinar- 

 ily ire figured: 



With steam heating one square foot 



of radiation will heat to a temperature 



of: 



Degrees. Sq. Ft. Glass. 



40 to 50 5 to 6 



50 to 60 41^ to 51/^ 



60 to 70 4 to 5 



With hot water as the heating me- 



Mention The Rerlew when yon write. 



WILKS 



Hot Water Boilers 



ARE THE MOST CCONOMICAl 

 BOILERS rOR GREENHOUSES 



No Nlsht Flroman Roqulrod with our 



SELF-FEEDING 

 HOT WATER BOILERS 



Send for Catalogue and prices. 



S. WILKS MFG. CO. 



3803 ShUMo Avo.. CHICAGO 



BOILER TUBES- YES- 



lota of 'em. 



4>lnch any quantity 6%c par ft. 



New and >-econd-hand pipe of all sizes. 



Tell us your waxtii. 



ILLINOIS PIPE Ac MFG. CO. 



2117 8. Jefferson Street. CHICAGO. ILL. 



Full Weight "Reading" 



Wrought Iron Pipe 



Sizes }i-'m. to 12-in. from stock 



FORD & KENDIG CO. 



iIti?"a';?S ^Sc^^st, PHIUDELPHIA, PA. 



dium one square foot of radiation will 



heat to a temperature of: 



Degrees. Sq. Ft. Glass. 



40 to .W \ .3% to 4^ 



50 to 60 :^ to 4 



00 to 70 2M, to 3% 



A Steady 

 Pressire 



will always 

 be main- 

 tained in 

 Tonr steam pipes, no matter 

 now the presanre at the boiler 

 floctnates, if yon eqnip yotir 

 main lines with these vafvei. 

 Carry 40 or 60 pounds presanre 

 on the boiler, set the 



Hughson 

 Regulating Valve 



to carry 5 or 10 pounds on the 

 line and you will always have • 

 reserve in case of a sudden drop 

 in temperature. This valve 

 saves both fuel and worry. Aek 

 for catalogue and particulan. 



Highsin Steam Specialty Co. 

 S021-SS. SuteSt,CUcii|« 



i 



Mention The Rerlew when jog wrlf . ^» 



Under favorable conditions one square 

 inch of grate surface is suflScient fp' 

 one square foot of direct radiation i"* 

 medium sized boilers. 



