1038 



The Weekly Florists' Review* 



Septembeb 6, 1906. 



boiler to the house and then divided to 

 supply three coils, one under each of the 

 benches, each coil to consist of a supply 

 or flow pipe from the 3-inch main and 

 three 2-inch returns under each side 

 bench, and a flow and four returns un- 

 dct the center bench, thus making thir- 

 teen lines of pipes the length of the 

 house. As the violet house undoubtedly 

 has the beds on the ground, it can be 

 heated by carrying a 2^rinch main flow 

 pipe from the boiler to the house and 

 there dividing it to supply two 2-inch 

 flows, one on either side wall of the 

 house. On the most exposed side of the 

 house arrange the supply to feed three 

 2-inch returns. On the sheltered side 

 arrange the flow to feed two 2-inch re- 

 turns. This will give seven lines of pipe 

 the length of the house, four on one side 

 and three on the other. 



I do not advise attempting to connect 

 the main flow of either of these houses 

 into the heating pipes leading to any 

 other house or houses. Make connections 

 direct with the boiler or with a manifold 

 on top of the boiler, by using the proper 

 cast-iron ells or tees, into which the 

 wrought-iron pipes can be calked. 



Li. C. C. 



NATURAL GAS VS. COAL. 



"Will you please give us your opinion 

 as to which is the cheaper fuel, natural 

 gas at 15 cents per thousand feet or 

 Pittsburg run of mine coal at $2.50 per 

 ton? S- & Y. 



You can judge for yourself which will 

 be most economical for you. It is esti- 

 mated that 30,000 cubic feet of gas is 

 equal to one ton of the best coal, or that 

 coal at $4.50 per ton is equal to gas at 

 15 cents per thousand. You must set 

 against this the cost of firing, removing 

 ashes, etc., which is chargeable to coal 

 and not to gas. L. C. C. 



SIZE OF FLOW PIPES. 



Please let me know what size cross- 

 header it will take from a 3-inch flow to 

 supply four 1^4 -inch hot water returns 

 under each of four benches. S. S. 



Each of the branches to supply the 

 four manifolds of 1^-inch pipe should 

 be of 2-inch pipe. If you use a cross- 

 header such as you describe, this should 

 be of 3-inch pipe, the same as the main 

 flow, as far as the take-off for the two 

 inside coils; from that point on it can 

 be reduced in size to two inches to sup- 

 ply the outside coils. L. C. C. 



TYPES OF BOILERS. 



I want to provide for the heating 

 of three houses each 20x100, Avith 6- 

 foot walls and 13-foot ridges. "What 

 will be best, a houer of the Kroeschell 

 No. 3 type, or a fire-box boiler seven 

 and one-half feet long and thirty-six 

 inches wide? A firm has offered me the 

 latter boiler, telling me it will heat 2,200 

 feet of radiation. I can figure only 

 1,900 feet. H. G. B. 



The three houses you purpose to erect 

 will require a boiler with capacity for 

 supplying heat to about 2,500 square 

 feet of radiation, and for this purpose 

 it would not be wise to purchase a boiler 

 with a rated capacity of less than 3,000 

 square feet. The fire-box or locomotive 

 type of boiler is not desirable for green- 

 house use, as it is not one of the most 

 economical types of boilers. The hori- 



WILES GREENHOUSE BEATERS 



The Wilks Greenhonse Heaters 

 are all Steel Self-Feeders. 

 Will run 16 hours at a time 

 - without attention. 



HO NIGHT FIREMAN REQUIRED 



Can be used with either 

 HARD OR SOFT COAL. 



■SVD FOB OVB VSW OATALOOXTE. 



s. wilkFmfg. CO. 



35th and Shields Avenue, 



CHICAGO, ILL. 



niD 0001 



Mention The Review when yon write. 



THREE 



SUPERIOR 



BOILERS 



New, steel, each built to heat 11,000 

 feet of 4-inch pipe. 



READY FOR SHIPMENT 



SUPERIOR MACHINE 

 A BOILER WORKS 



J27-J33 "West Superior St. 

 CHICAGO, ILL. 



Mention The Review when yon write. 



fOAm 



mKO 



HAaM 



Robber Roofing 



The original flint coated. 

 Write for catalog and samples. 



SALL MOUNTAIN ASBESTOS 



MF6. GO. nS.Ciul8I..CHICAN 



zontal tubular of the regular steam 

 generating type or of the Kroeschell 

 type will either of them be all right. 

 The piping you have planned will work 

 well either way. I should choose the 

 plan most easilv and cheaply installed. 



L. C. C. 



HEATING BY PRESSURE. 



Some time ago I put in an upright 

 tubular boiler eight feet six inches high, 

 and my pit was only about seven feet, so 

 that the top of the boiler is a little 

 over a foot above the level of my green- 

 house floor. My overhead system of 

 circulation is slow, and I have decided 

 to put it under pressure, and would be 

 obliged to you if you would tell me 

 just what is necessary to make the 

 change, the placing of safety valves, etc. 

 Our water pressure is about seventy 



FLORENCK HKATERS 



ODT8IDK AKD INSIDX 



COLUMBIA HEATING CO., Belvidere, III. 



Sal— Dopt.. 36 D— rbofw St.. CHICAGO 



High'Grade Boilers 



SiSSJu. for GREENHOUSES 



STEAM and HOTWATER 



GIBLIN&CO.,Utica,N.Y. 



Mention The Reylew when yon write. 



pounds. I have been running an open 

 system, with the tank and highest point 

 directly over the boiler. The latter has 

 eighty-four 2-inch tubes, and, I am sure, 

 is of ample capacity to heat my two 

 houses, each 24^/^x125 feet, thirteen feet 



