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84 



The Weekly Florists' Review. 



Decbmbeb 21, 1911. 



SNniI,LINEAWEAVER&CO. 



COAL 



Aatknelto, BUuUbom, €ok« and Ctaf CmI 



West End 

 truBt Bnildlnc, 



Philadelphia 



Greenhouse Heating. 



AVEEAGE QUANTITY OF OOAIi. 



Will someone kindly give an approxi- 

 mate estimate of the amount of coal 

 required to heat and run for a season, 

 at a temperature of 55 degrees, two 

 modern, curved-eave houses, each 22 x 

 62, with a modern hot water boiler and 

 egg coal, in this northern Jersey 

 climate. F. M. 



The quantity of coal required under 

 the conditions named would vary, of 

 course, with the severity of the winter, 

 as well as with the exposure of the 

 houses and the care and skill used in 

 firing, but under average conditions it 

 should run from twelve to sixteen tons 

 for the five winter months. 



A CONNECTICUT GREENHOUSE. 



I am building a greenhouse, 30 x 200, 

 five and one-half feet high at the sides 

 and fifteen feet to the ridge. There 

 are two feet of glass in the sides and 

 glass in the west end. The location 

 is quite exposed. I want a temperature 

 of 50 to 55 degrees. The house is 

 built on a grade, with four feet of fall 

 to the east, where the boiler will be 

 located. I should like to ask how you 

 would pipe this house for hot water t 

 Do you think hot water would be better 

 than steam f If you think steam would 

 be preferable, wiU you please tell how 

 you would pipe for steam? 



E. B. V. 



The first cost of installing the heat- 

 ing plant would be considerably less for 

 steam than for hot water, but the fuel 

 would cost from fifteen to twenty-five 

 per cent more. Each method of heating 

 has its merits. 



To heat the house with hot water, the 

 boiler should have a rating for about 

 2,400 square feet of radiating surface. 

 The radiation required can be furnished 

 by means of five 2i^-inch flow pipes 

 and ten 2-inch returns. Place a flow 

 on each plate, another under the ridge, 

 and the two remaining flows can be 

 under the purlins. Each flow should 

 feed a coil containing two return pipes. 



If steam is to be used, put a 2%- 

 inch flow on each wall, and with each 

 of them feed a coil of five 1'4-iDeh 

 returns. 



HOW MUCH HABD COAL? 



Under the best working conditions, 

 how much hard coal should be required 

 to heat with hot water, from November 

 1 to April 1, two greenhouses to a night 

 temperature of 52 to 55 degrees, for 

 bedding plants, in this part of New 

 York state, where the temperature 

 occasionally goes to 20 degrees below 

 zerot The houses are eight feet apart. 

 One is 17x108 and four feet to the 



'eaves. It is boarded on one side and 

 has sixteen inches of glass in the other 

 side. There is glass in both ends down 



■far enough to be. in a line with the 



Style II 



If s Padlocked 



nd arranged with hermetically 

 sealed caae. safe from hose or damp- 

 ness. Itlsanloitromentdeyeloped 

 specially to meet greanhouse con- 

 ditions. It cannot be tampered 

 with and remains absolutely accu- 

 rate and effective, no matter how 

 damp your house may be. In all 

 other respects, however, this 



Standard Special 

 Greenhouse Thermostat 



Is practically the same as Style I, 

 advertised In last week's Review, 

 It gives poeitlve warning of ap- 

 proaching fire or frost, heat or cold. 

 Anybody can put it np— only a screwdriver 

 eeded. All necessary directions with each 

 Instrument. Order today. Ask for 



STYLE II, diameter 6 ii., price $10.00 eicb 



STANDARD THERNONETER CO., 6S Siiirley Street, 



(SucccssMV to PARKER MFG. CO.) BOSTON. MASS. 



Mention The Review when you write. 



COAL! 



BETTER TO SAVE COAL 

 THAN BUY IT CHEAP 



Ov Aitimatic Electric Condenution Pninp 



8AVX8 20% TO 50% COAL,. 



Draws Water and Air out of the Heating 



System. 

 Returns Condensation Water to Boilers. 



M«kea Heatlns Uniform 

 SAVSB LABOR 



Write for particulars. 



CHICAGO PUMP CO. 



1050 Fulton Street, CHICAGO, UJL. 



Mention The Review when you write. 



TkeUien 

 0! Tke.... 



Snccessora to the 

 John Davis Company 



Hnghson Regulating Valve 



are all satisfied with the results it has given, and many 

 duplicate orders is the proof. Till* Valve will main- 

 tabi a steady pressure on the low side, no matter 

 how the initial pressure fluctuates. By carrying 40 or 60 

 pounds pressure on the boiler and setting the valve to 

 carry 5 or 10 pounds on the line, you always have a 

 reserve to fall back on in case of a sudden drop in tem- 

 perature. Our ne\7 catalosue Is Just out and If 

 you contemplate making any changes you had better 

 get one — it is yours for the asking. 



We Also Make Traps and Other Devices. 



HUGHSON STEAM SPECIALTY CO. 



5021-502S S. State Street, CHICAGO 



Mention The Review when you write. 



Pipe Fittings — Imico Boilers 



-FOR GRXXMHOU8X WORK- 



ILLINOIS MALLEABLE IRON CO. 



1801-1825 DIVXRSKT BOULKVARD CHICAGO 



Mention The Review when you write 



DO TOU KNOW ABOUT THK 



Nartin Rocking Grate 



IT SAVES COAL 



MARTIN CRATE CO.,'" 'e.'SsSr "^ 



Mention The Review when you write. 



Ford & Kendig Co. 



"SfeBeirod" WroigH Pipe 



Especially adapted for Greenhouse Work, TIU 

 tings, Valyes, Tools, etc. 



24tk ud Woid Sts. PHILADELPHIA. PA. 



Mention The Review when you write. 



