XOVEMBEK 21. 1907. 



The Weekly Florists^ Review* 



73 



Greeahonse Heating. 



PIPING IN PENNSYLVANIA. 



How many 2-incli flows and how many 

 ]-ineh returns will be required to heat 

 with steam a greenhouse 30x100, four 

 feet to the gutters and fifteen feet to 

 the ridge, with the ends all glass and 

 twenty-four iNclies of glass in the sides? 

 1 want a temperature of 50 to 60 de- 

 threes. The outside temperature some- 

 tiiiMia uocs to 30 degrees below zero. 



K. E.H. 



To provide radiation for the house 

 30x100 with 2-inch flows and 1-inch re- 

 turns, it will require three flows and 

 twcntv-seven returns, nine to each flow. 



L. C. C. 



aTY WATER PRESSURE. 



I have two houses piped for hot water, 

 with the downward system. I also have 

 the city water under the middle bench 

 of my north house. Could I attach this 

 to the boiler and get more rapid circu- 

 lation? The water has a pressure of 

 .sixty pounds. Would this be safe, with 

 :in old boiler and second-hand pipe? 



G. A. T. 



li you install a reducing valve, so as 

 to place a pressure of not more than 

 <'ight or ten pounds upon your plant, 

 the boiler and pipe will probably stand 

 it, but I doubt if it will be safe to use 

 the full sixty pounds of pressure. The 

 increased pressure will not increase the 

 rate of circulation, but it will allow 

 you to heat the water in the boiler to 

 a higher temperature and thus make the 

 jdant more cflicient. L. C. C. 



PIPING IN COLORADO. 



We desire to have a night tempera- 

 ture of 50 degrees in a house 20x85, 

 with side walls four feet high; no glass 

 in the side walls; glass in one end. We 

 shall use hot water. How many 2-inch 

 pipes will be necessary to keep up this 

 temperature? The outside temperature 

 occasionally goes down to 20 degrees 

 below. How many more pipes would 

 be required to have a night temperature 

 of 60 degrees? E. & W. 



To carry a temperature of 50 degrees, 

 a 21/2 -inch riser under the ridge, with 

 ten 2-inch returns, will be required. For 

 60 degrees, install a 3-inch riser and 

 twelve 2-Jnch returns. L. C. C. 



HOT WATER FOR SMALL HOUSE. 



How shall I pipe for hot water, and 



how small a heater could be used, to heat 



a small greenhouse 14x21 and 9 feet to 



the ridge, in this Maine climate? The 



sides are four feet high and have no 



glass; there is one glass end. The 



; house is exposed on all sides, and 1 



1^^,°"!^ !^^® ^° maintain a temperature 



lot 60 degrees in zero weather. 



H. A. B. 



To heat the greenhouse 14x21, in your 



dimate, you will require a hot w-ater 



1 heater rated to carry about 300 feet of 



radiation. The heating surface for the 



house can be provided by installing fif- 



l?n"i ^"'V^i'^ *'''^*^°g pipes under the 

 benches. If you have two benches, these 

 can be arranged in two coils, one con- 



THE KROESCHELL BOILER 

 NOT CAST IRON 



HAS 



WiiTEB 



FRONT 

 SIDES 

 TOP 

 BACK 



K«ir Catalogue and prices on application. 



Kroeschell Bros. Co. 



SI Erie St., Chicago 



Mention The Review when yon write. 



THE JOHN DAVIS COMPANY 



Halsted, 22d and Union Sts., CHICAGO 



MANUFACTURERS OF 



Reducing Valves, Back Pressure Valves, Steam Traps, Steam Goods 



This is what one of our customers thinks o< our valves : 



Lincoln, III., January 8, 1W^^. 

 The John Davis Compaky, Chlca»o, 111. 



Gentlemen:— You can siroogly and unheBitatiDply recommend thtt 

 "Eclipse" piston type reducing valve to florists. We have two purchased 

 of you last year. Ws would not have them out for double their cost and 

 find them as spnHitlve as a watch. We will be In Chicagro soon to take up 

 the vacuum system with you. Vours truly, 



W. H. Oui^KTx & Sons, Florists. 



00 TOU KNOW ABOUT THK 



Martia Rocking Grate 



IT SAVES COAL 



MARTIN GRATE GO.'^'li^^"- 



Mention The Review when yon write. 



EMBRGENGY PIPE CLAMP 



To Repair Splits m4 

 Rust Holes in Pipes 



Made of mallrable 

 irun, all sizes, ^in. 

 tol2-in. Send for Cat- 

 alog on Pipe Repairs. 



James McCreaA Co.' 



MANOFACTURBRS 



WashiaolM St.. CHICAfiO 

 Mention The Review when you write. 



tfiining eight and one seven pipes. One 

 pipe in each coil vould connect with 

 the heater and go direct to the far end 

 of the house and enter a manifold car- 

 rying seven pipes in one case and six 

 in the other, these pipes to act as re- 

 turns and to be gathered into manifolds 

 at the end of the house nearest the 

 boiler, to which the manifolds should 

 be connected by pipes of the same size 

 as the flow in each case. Connect a 

 good-sized expansion tank with the main 

 return close to the point where it enters 

 the boiler, and give the tank as much 

 elevation as can be obtained. L. C. C. 



WATER PIPE USED FOR STEAM. 



A simple experiment made at the Bell 

 ^lawr Greenhouses, at Mount Ephraim, 

 N. J., by using a water pipe which 

 runs through the center of the green- 

 house for a steam pipe on cold nights, 

 was a success. The length of this pipe 

 IS 200 feet, the full length of the hot- 

 house. A valve is first placed on the 

 water pipe where it enters the green- 

 house, so as to keep water out when 

 ready to use the steam. A pipe is then 

 installed to furnish connection between 

 the water pipe and the steam pipes. 



MONEY 

 SAVED 



and better flowers grown 

 by installing the 



Morehead Trap 



Hundreds of our traps are in use in 

 greenhouses tbrouKbout the country. 

 They can do for you what tbey are 

 doing for others— Every pipe in your 

 steam system of equal heat. Write 

 for florists' booldet. 



MOREHEAD MFG. CO. 



1043 Grand River Ave., DETROIT. MICH. 



Mention The Review when yon write. 



with also a valve in the center so as to 

 keep the steam back when used for 

 water. This end of the pipe is now 

 completed and ready for steam, but it 

 must be borne in mind that it must 

 be a few inches higher than the other 

 end, so as to drain all water out. 



The other end may be adjusted in two 

 . ways, either by attaching a pet cock, 

 always to be left open when used for 

 steam, or by connecting with the return 

 steam pipes, with a valve to keep steam 

 out when used for water. 



G. H. Hankei.e. 



SPRINGFIELD, OHIO. 



The meeting of the Springfield Flo- 

 rists' Club November 11 was the most 

 interesting yet held, there having been 

 an attendance of thirty-five members 

 and a number of invited guests, in- 

 cluding representatives of various local 

 bodies and the press. Jessie M. Good 

 and Albert K. Hahn were elected to 

 membership. 



The members of the committee on 

 civic improvement to serve with Presi- 



>. 



