122 



The Rorists' Review 



May 5, 1921 



Greenhous e Heating 



SuBSCBiBEBS are invited to write the 

 editor of this department with regard to 

 anj details of greenhouse heating that 

 are not understood. When information 

 is desired regarding the capacity of boil- 

 ers, or the amount of radiation required 

 for a greenhouse, the needed temperatures 

 should be stated in the inquiry, as well 

 as the amount of glass in the side walls, 

 and the dimensions and general arrange- 

 ment of the greenhouses. It is often help- 

 ful, also, to have a sketch showing the 

 location of the houses. 



SERVICE FROM A STREAM. 



As I .1111 loeatod near a larno stream 

 from which I can m't a 24 inch How of 

 water through a terra t-otta pipe, I 

 should like to know wliat horsepower 

 of dyuamo that size of stream can 

 operate at ten, fifteen, twi'uty and 

 twenty-five feet of fall, respectively. 

 What is the best kind of water wheel 

 for this purpose, and how many feet of 

 glass could be heated from u dynamo 

 at the different falls mentioned? What 

 would be the cost of water wlieel, dy- 

 namo, and wiring and installing elec- 

 tric radiation? li. .T. P.- -Pa. 



While a large amount of electricity 

 could be generated by water through a 

 24-inch pipe, even under a head of ten 

 feet, the cost of installing the water 

 wheel, dynamo, heating elements, etc., 

 would be so great as to make it prohibi- 

 tive. Certainly it would not be advis- 

 able to use 24-inch terra cotta pipe, 

 even for a head of ten feet. In order to 

 obtain an estimate that will be in any 

 way reliable, it would be advisable, if 

 definite data are desired, to ask some 

 local electrical engineer to sul)mit esti- 

 mates for the various items. 



TO PIPE UNDER BENCHES 



I intend to Iniild a greenhouse, 18.x 

 ■Ju feet. It will run east and west, and 

 will have glass on tlie south side and 

 in both ends. As I want to put in hot 

 water heat, I sliould like to know how 

 many sections of boiler would he neces- 

 sary to heat the al)o\ c-mcutioned house. 



I shall have a 3-foot bench on each 

 side and a 7-foot bench in the middle, 

 which will run halfway through the 

 building. How many li4-iiicli pipes 

 will be required under the benches, or 

 c;tn I use 1-inch pipes? I wish to heat 

 the house to about 60 degrees when the 

 outside temperature is 15 degrees below- 

 zero. M. G. — Kan. 



While it might vary slightly with 

 the style of the boiler, it is generally 

 advisable to select a boiler with five 

 sections, having a grate about twenty- 

 one inches in diameter. 



It would be best not to use pipe 

 smaller than 2-inch for the flows and 

 1%-inch for the returns, but H4-inch 

 pipe will •^ive fairly good results in the 

 return coils. Three 2-inch flow pipes, 

 located on the side wall plates and three 

 feet below the ridge, will be needed. If 

 1%-iuch pipe is used for the returns, 

 twelve pipes in three coils of four 

 pipes each, placing one under each of 

 the benches, can be used. If the south 

 side of the house is much exposed, an 

 additional return under the south bench 

 or on the south wall may be needed. 

 With 1%-inch returns fifteen pipes will 

 be required. Aside from what is used 



WHEN YOU BUY-GET A KROESCHELL 

 'THE BOILER OF UNEQUALED FUEL ECONOMY' 



NOT 



CAST 



IRON 



NOT 



CAST 



IRON 



Expressions From Men Who Know Boilers 



Get the Kroeschell First 



Several ji lus ago Mr. ■ corrpsponded with us in regard to 



the Kroeschell Hot Water Boiler, but was persuaded to install two 

 sectional cast iron boilers which were claimed to be superior to 

 the Kroeschell. 



In the meantime we placed a number of Kroeschell Boilers in the 



Immediate vicinity of Mr. , and he could not help but notice 



their great efllciency, and last year, while at the convention, he 

 placed his order for his first Kroeschell. The following letter 

 speaks for itself: 



"We like the Kroescbell Boiler very much. It gives entire satis- 

 faction, and it iH so easy to Are. 1 wlU trade you the two cast 

 iron sootioniil liollerH for another like the Kroeschell I have." 



[Signed] .Mr. , Ohio. 



No More Cast Iron Boilers 



1 have used several different 

 inake.s of boilers but none I like as 

 well as yours. 



The K'ro>_'Sohell is easier to fire, 

 takes less coal and water circulates 

 (luirk'-r than any other boiler. 



F bave used two (iilTerent m.ikes 

 of sii lional Imilers- no more cant 

 iron boilers for un. 



[.Signed] Mr. , Mich. 



Kroeschell Replaces Cast Iron 



The Kroeschell has replaced three 

 cast iron sectional boilers, and It 

 certainly has given entire satisfac- 

 tion. 



It only takes a few words to ex- 

 press the good quality of your 

 boilers and they are as follows: 

 "Of all firms handling boilers and 

 advertising them truthfully, the 

 party buying a boiler would have 

 to get the Kroeschell, as you are 

 certainly advertising nothing but 

 f.iets." [.'Signed I Mr. . N. Y. 



KROESCHELL BOILERS will put high 

 tamperature* into your heating linos 



KROESCHELL BROS. CO., 



444 W. Erie Stre«t 

 CHICAGO, ILL. 



