88 



The Florists' Review 



Januabt 18, 1017. 



H. H. UNEAWEAVER & CO., Ik. 



"™.5J"" COAL 



MTUMINOUS \^ \0 #^ ■■ 

 Weit End Trust Buildinc. PHILADELPHIA 



17 BAtterr Place. NEW YORK 



Nnttins Baildins. LEBANON. PA. 



Mention !!»• R>t1cw wh»a yoo write. 



Creenhonse Heating. 



Subscribers are invited to write the 

 Editor of this Department with regard to 

 any details of greenhouse heating that 

 are not understood. But please do not 

 ask The Review to make a choice of ap- 

 paratus for you. The greenhouse heating 

 equipment advertised in this paper is, we 

 believe, the best for the trade to buy, 

 and each article the best in the special 

 field of its adaptation. 



HEIGHT OF SMOKESTACK. 



I wish to get some information from 

 your heating department. I have a 

 greenhouse 20x100, heated by a No. 518 

 Lord & Burnham boiler, which does the 

 work quite satisfactorily. However, my 

 smokestack is only nine inches in diam- 

 eter and twelve feet high. At all the 

 other places that I have visited, the 

 chimneys are from twenty to thirty feet 

 high. If I had a taller stack, would any 

 less coal be needed to heat the place! 



G. S.— N. J. 



In order to secure the highest econ- 

 omy of fuel, perfect combustion must 

 be obtained and this cannot be expected 

 unless the smokestack is more than 

 twelve feet in height, especially if it 

 is only nine inches in diameter. 



We do not remember the exact rating 

 of a No. 518 Lord & Burnham boiler, 

 but, for a house 20x100, the rating 

 should be about 1,000 square feet, if a 

 temperature of 60 degrees is desired, 

 and the grate should be about twenty- 

 five inches in diameter, or two feet 

 square. While a chimney nine inches 

 in diameter would answer for a heater 

 of this size, we should prefer to have a 

 stack ten inches in diameter, and if it 

 is thirty feet high above the entrance of 

 the smoke pipe from the boiler, a more 

 perfect combustion and greater econ- 

 omy in the use of fuel will be secured. 

 The actual height of the chimney should 

 depend somewhat on the kind of coal 

 used. A height of twenty to twenty-five 

 feet would answer for egg anthracite, 

 while even more than thirty feet would 

 be desirable for the finer grades of soft 

 coal. 



ONE FLOW IS NOT ENOUGH. 



We wish to get a little advice on our 

 heating system. Our greenhouse is 

 21x31. There are eighteen inches of 

 glass in each side and in one end; the 

 other end adjoins the boiler room. The 

 rafters are about fourteen feet long and 

 one gable is all glass. In other words, 

 there are about 1,066 square feet of 

 glass. We have a Wilks hot water 

 boiler, 24x36. One 2-inch main flow 

 pipe runs along the purlin, about half- 

 way up the rafters, to the front of the 

 house. There three 2-inch ells branch 

 to three manifolds, each connected with 

 six 1%-inch returns, which run to the 

 rear of the house and empty into a 

 2-inch return main leading to the boiler. 

 There are two globe valves, one of them 



WHY TAKE A CHANCE? 



You can't know (at best you only think you know) 

 what the temperature is in your greenhouses, nights 

 and during your absences, unless you have 



THK STANDARD 



RECORDING 



THERMOMETER 



PRICE. $30.00 



It has made thousands of dollars for many florists 

 and may do as much for you. Your plants must have 

 certain, steady temperature to do their best. Use 

 this thermometer and you will know whether they 

 are getting what they need. It leaves a written record 

 under lock and key. 



*^"^7dN^^f^''' 



S«nil f tr 

 Circulars 



"Please send me 2S record plates llKe the enclosed sam- 

 ple, and I want to say that the machine bougrht a Rood many 

 years back is keeping up its gooi work rl^ht along. The 

 recording thermometer is a very useful adjunct to good 

 plant growing and should be In every man's greenhouse, as 

 reference to It may often tell what is wrong with a batch of 

 plants, and avoid blaming the temperature when it Is not the fault of the temperature. 



"Respectfully yours, Albebt M. Hkbb, Lancaster, Pa." 



Standard Thermometer Co./^oVfSS: SXS^ 



73-2 



Mention The .ReTlew when you write. 



AV^HEN a split is 10 

 " " in. or 12 in. long, 

 you merely use two 

 clamps, butting them 

 together, and a long 

 special gasket which 

 we furnish free of 

 charge. Write for our 

 "Pipe Repair Book." 



M. B. SKINNER CO. 

 560 Washington Boul., 

 Chicago. 



Mention The ReTlew when yon write. 



SET YOUR BOILER RIGHT 



We make a specialty of all kinds of fire-brick 

 work. No order Is too large, and the smallest order 

 receives the same careful attention. Let us call on 

 you. 



Estimates cheerfully furnished. 



PETER KNOWE & SON 



31S Chamber of Commerce BIdg. 

 133 West Washington Street. CHICAGO, ILL. 



Phone Main 3766 



Mention The Review when yog write. 



on the flow line, the other on the main 

 return, close to the boiler. There is an 

 air outlet at the high point in the flow 

 pipe. 



The coils are arranged as follows: 

 Six l^A-inch pipes under the entire 

 length of a bench twenty-eight feet 

 long; six 1%-inch pipes under the cen- 

 ter bench, twenty-three feet long; six 

 l^A-inch pipes under the end bench, 

 twelve feet long, and continued under 

 the side bench, twenty-eight feet long. 



The draft is good and we can fire 

 till the boiler is white-hot; yet we can- 

 not keep up the needed temperature. 

 We require a temperature of about 65 

 degrees when the outside temperature 

 is 20 degrees below zero. Would you 

 advise us to add a 2-inch flow, attach- 

 ing it to the large coil, or is the boiler 



WILKS SELF- FEEDING 

 HOT WATER BOILER 



For Economy, Durability, Dependability 



InstaU a WILKS 

 and forget your 

 troubles. 



No night fire- 

 man required— 

 as the magazine 

 or coal chamber 

 holds sufBcient 

 fuel to keep fire 

 10 to 12 hours 

 without atten- 

 tion. Best made 

 for a small 

 greenhouse. 



Send for Catal ogue 

 and Prices 



Telephone 

 Yards 866 



S. WILKS 

 MFG. CO. 



3523 ShieUs il«e.. 

 CHICAGO, ILL. 



Mention The Review when yon write. 



HanseD Rocker Grates 



Are best for greenhouse use. 

 Write for particulars. 



HANSELL GRATE CO. 



654 Railway Exchange Bldg., CHICAGO 



Mention The Review when yon write. 



too small I Or would you suggest the 

 use of air valves in the manifolds t The 

 main return is about two feet above the 

 top of the boiler. The flow pipe is nine 

 feet above the boiler. The expansion 

 tank is three feet above the flow pipe. 

 The house is in good condition. 



W. M. H.— Pa. 



The boiler is amply large to supply 

 three times the present radiation, but 

 although the amount of radiation in the 



