70 



The Weekly Florists' Review; 



Ski'TKMBKk 1. 1910. 



this! The boiler is located near the 

 middle. How would you advise piping 

 this house for steam? We are located 

 in northern Colorado. E, & W. 



In a general way, about one half as 

 much radiation is required for steam 

 as for hot water. To heat a heuse 

 20x85 feet with steam would require, 

 for 50 degrees, about six 2-inch pipes. 



To put in a combination plant, it is 

 first desirable to have the flow and re- 

 turn connections large enough for hot 

 water. Then provide an expansion 

 tank, with a shut-oflf valve, for hot 

 water, and steam fittings for steam. 

 The piping should all run downhill 

 and air valves will be needed for steam, 

 as well as globe valves at the ends of 

 about one-half of the returns, to reduce 

 the radiation when using steam. 



STEAM BOILEB FOB HOT WATEB. 



We have a steam boiler, internal fired, 

 of ten horse-power, and should like to 

 know if it would heat 6,000 square feet 

 of glass to a temperature of 50 degrees 

 at night in zero weather, using hot 

 water instead of steam. I am located in 

 central Illinois. The boiler is seven and 

 one-half feet long and twenty-six inches 

 in diameter. It contains twenty-eight 

 2-inch flues and three 4-inch return 

 flues. There is a water space at the 

 front, sides, back and bottom of the 

 firebox. Therp is one 4-inch outlet and 

 one 4-inch opening for a return. Are 

 these sufficient? We can have a water 

 pressure of about twelve pounds. 



W. B. & S. 



Although there will be no surplus 

 capacity, a boiler such as described 

 should heat the greenhouse to 50 de- 

 grees. This will require about 1,500 feet 

 of radiation for hot water. For this 

 there should be two 4-inch flows and 

 the same number of returns. 



BOILEB AND BADIATION. 



I am planning a change in our heat- 

 ing system and should like to get your 

 opinion. We have a steam boiler, three 

 feet in diameter and ten feet long, with 

 twenty-six 3-inch flues. It is called a 

 twenty horse-power boiler and that is 

 what I figure it. It has nine or ten 

 square feet of grate and a 16-inch 

 smokestack, which I figure is ample for 

 the boiler. Since we burn fine slack 

 coal, we need a large grate area. 



We use this boiler for hot water and 

 are enlarging the openings. Am I right 

 in planning that in the future this 

 heater will carry 3,000 square feet of 

 radiating surface and 12,000 square feet 

 of glass, with the house at 50 degrees 

 and with a possible outside tempera- 

 ture of 20 or 23 degrees below zero? 

 Will one run of 2%-inch pipe with five 

 2-inch returns, and two runs of 2-inch 

 pipe with four 2-incii returns, be suf- 

 ficient to heat a ho«|ser>with thirty-six 

 feet of sashbars in the roof, a south 

 gable, and a space 2x60 feet exposed 

 on one side? The house is 100 feet 

 long and thirteen feet to the ridge. 

 The north end and the other sides are 

 protected by adjoining houses and a 



shed. 



Am I using large enough flows? Will 

 a 6-inch main be large enough to carry 

 all the heater will ever handle? I can- 

 not well fit a larger one on the steam 

 dome, but could connect another flow 

 on top of the boiler later, if necessary. 



What is (fee Most Vital Point 

 in Grate Construction? 



Grate^^akers and asers agree 

 that the moat important point 

 is to keep the air epaces open 

 as long as possible under all 

 conditions. 



We guarantee to keep the 

 air spaces of the 



Martin Anti-rricflon 

 Rociiing Grate 



open longer under any condi- 

 tions than can Jbe done by any 



other grate in existence. 



The hottest fire yon can build will not warp a "Martin," and it can be 

 inBtalled without disturbing the brick work. 



We refer to Peter Reinberg, Emil Buettner, Bassett & Washburn, Wietor 

 Bros., Adam Zender, Sinner Bros., Albert Dickinson Co., and many others. 

 Write for testimonials and full particulars, f ^ 



THE MARTIN GRATE CO., nSfc^^T^T'*' 



Meiiliou The Kev^-'v 'irien vou write. 



The Superior Standard 



Return Flue Fire Box Boiler 



contains more heating surface, and less water space than any other sted iMiler 



Ask the nan 

 that knows, the 

 one using dif- 

 ferent style 

 boilers— names 

 ■re yours, for 

 the asking. 



% of the HeatlnB Sorfaoe Is In the Tubes 



After using 

 our boiler one 

 season, you will 

 say like all oth- 

 ers: "Nothing 

 but 'Superior* 

 forme." 



This boiler has given better satisfaction than any other boiler on the market 



■lade In Nine (0) alzeo lor Hot Water 



Bend for oatalogiie and Ust of crowere that are uotnc this boUer 



Superior Machine and Boiler Works, w. £U;fr«.. Chicago, III. 



MPTition The Review when you write. 



Install the Best 



Return Trap You 



Can Buy 



— NOW-^ 



It will save both money and 

 worry-all winter long. You can- 

 not afford any trap but a "Detroit.'* 



Qet Our Proposition. 



AggANBLOWERQoMl^HY 



