100 



The Weekly Florists' Review* 



APitiL 25, 1V>12. 



Greenhouse Heating. 



A MASSACHUSETTS RANGE. 



Will you kiudly iuforin me as to the 

 bewt way to heat my greenhouses with 

 hot water? My houses may be de- 

 scribed as follows, beginning at the 

 north side of the range: House No. 1 

 runs east and west. It is 20x108, ten 

 feet high to the ridge and five feet to 

 the eaves, and contains raised benches. 

 At the west end of this house is the 

 ])otting shed, and under the potting 

 shed is a boiler — the larger one of the 

 two boilers which are used to heat the 

 range. House No. 2, which is three- 

 quarter span, also runs east and west, 

 along the south side of No. 1 and the 

 potting shed. No. 2 is 26i{. x 132Vj, 

 twelve feet high to the ridge, five feet 

 high to the back eave and three feet 

 to the front eave, and contains solid 

 beds. Houses No. 1 and 2 are used 

 for a general crop — carnations, chrys- 

 anthemums and all sorts of pot jdants. 

 South of these two houses, and par- 

 allel with them, is a violet house, 10 x 

 ;■)(), eight and one-half feet to the ridge 

 and five feet to the eaves. Running 

 across the east ends of Nos. 1 and 2 

 is a lean-to house which is used for 

 l)ropagating. It is 9i/. x 52, seven feet 

 high at the back and five feet at the 

 front. The smaller of the two boilers 

 is located in this propagating shed, at 

 the east end of house No. 2. 



At present the houses are piped with 

 4-inch pipes, with calked joints, except 

 a 3-inch flow and return in the center 

 of each house. The boiler under the 

 potting shed runs a 4-inch pipe — a flow 

 and return — up each side of house No. 

 1, as well as a 3-inch flow and return 

 up the center of the same house. It 

 also runs a 4-inch flow and return up 

 the north side of house No. 2. The 

 boiler at the east end of house No. 2 

 runs a 4-inch pipe — a flow and return- 

 around the propagating house, and a 

 4-inch flow and return up the south side 

 of house No. 2, as well as a 3-inch 

 flow and return up the center of the 

 same house. In the violet house there 

 are no pipes as yet. 



Now, these 4-inch pipes with calked 

 joints do not do their work as T should 

 like them to do it, for it keej)s me busy 

 to prevent the houses from freezing in 

 zero weather, although I believe the 

 boilers could do the work if the houses 

 were properly piped with smaller pipes. 

 What size of pipes would you advise 

 me to put in, and how many flows 

 and returns for each house? I should 

 also like to run a jiipe, or as many as 

 would be needed, into the violet house 

 from house No. 2. This would be in- 

 tended merely to keep it from freezing, 

 while in the other houses I should like 

 to run the temperature as near .lO de- 

 grees as ])ossible, in zero weather. My 

 location is near Boston, Mass. 



R. K. R. 



The letter does not give any idea of 

 the capacity of the two boilers and 

 hence it is not i)ossible to tell just how 

 the radiation should be divided be- 

 tween them. 



It is suggested that from the boiler 

 under the jmtting room a 3-inch flow- 

 run directly east under the ridge of 

 house No. 1, and that when over the 

 east end of the middle bench a 'Jij-inch 

 pipe be dropped down and used to feed 



A Steady 

 Pressure 



will always 

 be main- 

 tained in 

 ▼our steam pipes, no matter 

 now the pressure at the boiler 

 fluctuates, if you equip your 

 main lines with these valves. 

 Carry 40 or 60 pounds pressure 

 on the boiler, set the 



Hughson 

 Regulating Valve 



to carry 5 or 10 pounds on the 

 line and you will always have a 

 reserve in case of a sudden drop 

 in temperature. This valve 

 saves both fuel and worry. Ask 

 for catalogue and particulars. 



Hughson Steam Spedthy Ci. 

 5021-3 S. State St, CUcMi 



Mention Tbe Beylew when tou write. 



imham 

 ilers 



Lord & Burnham Co. 



S>l»»Offlc«i»; 



ysctorle* ; 



New York 



irvlngton, - N. Y. J^„"J,,^„. 

 Des Plaines, - III. Chicago 



Mention The Bevlew when you write. 

 DO TOU KNOW ABOUT THX 



Nartiii Rocking Grate 



IT SAVES COAL 



HARTIN CRATE CO.,"" iSSTSk? "^ 



Mention The Review when you write. 



SI!nTII,UNE&WEAVER&CO. 



COAL 



Aathnelto. BltaBtaMi. Coke u4 •§ 



r^tl.'^^. Philadelphli 



Mention Tbe Review when you write^ 



a coil of two 2-inch inpes, and at the 

 end of the house it be connected with a 

 coil of four 2-inch pipes under the north 

 bench. Then run another 3-inch pipe 

 from the same boiler and carry it at a 

 slight fall on the plate of the north 

 Avail of house No. 2, and at the east end 

 carry it aroun<l through the jiropagating 

 house and back under the south bench 



Greenhouse 

 Heating: Systems 



and 



H 



RETURN TRAPS 



work well together 



It costs no more to have 

 free and clear steam lines 

 and an efficient heating sys- 

 tem than to have sluggish 

 lines and an inefficient heat- 

 ing system. 



It's useless to expect good 

 results when trying to put 

 steam through coils that are 

 half full of condensation. 



"Detroit" Return Traps 

 not only keep lines clear of 

 water but automatically re- 

 turn it directly to the boiler 

 at practically the same 

 temperature at which it is 

 condensed. 



Once installed, "Detroit" 

 Return Traps are always 

 on the job. 



steam Trap Bulletin No. 326-WF jui^t 

 off the press. Yours for the asking. 



Detroit, Mlchlgai 

 U. S. A. 



Mention The Review when you write. 



HIGH-GRADE BOLERS 



a^".V~. for (GREfNHOUSB 



STEAM and UOT WATER 



GIBLIN S CO.. "%SS:^5^- 



Mpntion The Review wh**!! yoo write. 



in house .\o. 1, where it should supply 

 a coil of four 2-inch return jdpes. Be 

 fore leaving house No. 2, a 2i:>-incli 

 flow should be dropped down to supply 

 a coil of four 2-inch flow idjies runnin;: 

 back to the boiler. From the othei 



