152 



The Rorists^ Review 



Habch 23. 1922 



Greenhous e Heating 



HEATING PROPAGATINO HOUSE. 



Will an American round hot water 

 boiler, which has a 28-inch grate, is 

 fifty-seven inches high and thirty- 

 seven inches wide across the top, with 

 one 5-inch flow and one 5-inch return, 

 heat one rose house, 20x80 feet, gables 

 exposed and four feet of glass in the 

 side wall; one propagating house for 

 begonias, 12x70 feet, one gable exposed 

 and three feet of glass in the side walls t 

 We should like to maintain a tempera- 

 ture of 60 degrees in the rose house 

 and 65 degrees in the smaller house 

 when the outside temperature is zero 

 or below. C. B.— O. 



I have not a catalogue of the Amer- 

 ican boiler and cannot therefore judge 

 definitely regarding the rating of this 

 boiler, since the number of sections are 

 not stated. 



For the best results with soft coal 

 as fuel it would be inadvisable to use 

 a boiler with more than four sections 

 above the fire pot, and unless the draft 

 is good, three sections will be better. 

 As near as can be approximated, the 

 capacity of a heater with a 28-inch 

 grate and three sections will be about 

 1,850 square feet of hot water radia- 

 tion, or 2,000 square feet with four 

 sections. While such a boiler would 

 heat the two houses to 60 degrees and 

 65 degrees respectively, if hard coal is 

 used, it would be preferable to use a 

 heater with a 30-inch grate for soft 

 coal. 



For the rose house use three 2%-inch 

 flow pipes and nine 2-inch returns. The 

 propagating house should have two 

 flows and eight returns. 



DIMENSIONS OF BBICK STACK. 



What are the heating requirements for 

 three connecting greenhouses, 30x100 

 feetf The height of these houses to the 

 gutter is five and one-half feet and 

 twelve feet to the ridge. There are two 

 feet of glass in one side and a 5-foot 

 bank of soil on the other side, with no 



flass in the north end. The boiler will 

 e three and one-half feet below the 

 level of the ground and will be located 

 at the end of the middle house, so that 

 it can be fed from the outside. What 

 make of boiler would you advise using f 

 What would be the best way of placing 

 the pipes f What should the dimensions 

 of the brick chimney bet H. M. — Ore. 



While the actual rsidi&tion required 

 in the three houses will be but little 

 more than 3,000 square feet, the boiler 

 should have a rating of about 5,000 

 square feet, especially as soft coal is 

 likely to be used. While the dimensions 

 of the grate and fire pot will vary for 

 different boilers, the area of the grate 

 should be approximately nine square 

 feet. 



The chimney should be sixteen inches 

 square inside, with a height of forty 

 feet. Either cast-iron or tubular boilers 

 will give good results. While three 

 2% -inch flow pipes would answer ordi- 

 narily, yet in this case, since the boiler 

 will be only three and one-half feet 

 below the surface of the ground, it 

 would be advisable to use five 2^-inch 

 fiow pipes in each house, placing one 

 flow on each plate, one under the ridge 

 and the others tinder the purlins. 



Kroeschell High Pressure 

 Steam Boilers 



In the Greenhouse business Kroeschell Boilers are used 

 almost entirely. There is comparatively little glass today 

 that is not heated by Kroeschell Boilers. 



That Kroeschell Boilers are the safest and most economical 

 has been proven by their country-wide use in the largest estab- 

 lishments owned by the wisest Growers — where only the best 

 of equipment is used and where the best of stock is raised. 



Years of experience in the Greenhouse business has taught 

 these Growers that Kroeschell Boilers are the best in every 

 way. That is why big men in the Growing business select 

 the KROESCHELL for their big ranges. 



Battary of Kroaschall Hish Prassura Staam Boilart with Suspanaion Sattlntr. 



ENGINEERING ADVICE AND QUOTATIONS CHEERFULLY 

 SUBMITTED. LET US KNOW YOUR REQUIREMENTS. 



KROESCHELL BROS. CO., 



444 W. Eri« Str«ttt 



CHICAGO, ILL. 



