128 



The Florists' Review 



APEIL 21, 1921 



Greenhouse Heating 



Subscribers are invited to write the 

 editor of this department with regard to 

 any 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. 



ENLABOINQ THE HOUSES. 



We have six connected greenhouses, 

 20x100 feet, except the southern one, 

 which is twenty-six feet wide. We have 

 a large tubular boiler, sixteen feet long 

 and six feet in diameter, with a grate 

 5%x6 feet. The boiler is at the center of 

 the houses on the north end. The north 

 wall is a double board wall. We plan to 

 lengthen the houses, making them 200 

 feet long. A 6-ineh main runs through 

 the center of the houses, to supply the 

 coils in each house. From the main the 

 pipes run each way to the side walls 

 and run along the side walls to the end 

 walls and there the pipes turn and come 

 back to meet the center main again. 

 This makes each pipe seventy feet in 

 length. We shall need more piping along 

 the south wall to heat the houses to 50 

 degrees in zero weather. All of the 

 walls are six feet, three feet of double 

 board and three feet of glass, except the 

 north wall, which, is six feet of double 

 board. The extension will be built the 

 same. How many mains and of what 

 size will be required? And what is the 

 best arrangement? How many more 

 feet of 1% or 2-inch pipe will it take 

 to heat it all, 126x200 feet, to 50 degrees 

 in zero weather? We have 4,400 feet of 

 IV^-incli pipe, besides tlie mains, in our 

 present house. We wish to take out the 

 ends of the houses and have the exten- 

 sions part of the present houses. 



J. P.— 111. 



To heat the houses after they have 

 been lengthened, an additional fi-inch 

 main flow pipe will be required, and the 

 main returns ought to be of the same 

 size as the flows. The new main may be 

 run alongside that now in use. It should 

 have a slight fall, and be carried so that 

 it will be at least seven feet high at the 

 end farthest from the boiler. The 

 sketch shows that the boiler is located 

 at the middle of the north side of tlie 

 present houses, and that the mains are 

 carried across the houses fifty feet from 

 the west end. The extension being on 

 the east end, it will be l.')0 feet from the 

 mains to the east end of the houses. 



To heat the portion of the houses west 

 of the mains, we should take off from 

 the main flow pipe, near the center of 

 each house, a .S-incli main feed pipe. As 

 soon as this pipe enters each house, we 

 should break it up into three 2-inch 

 flows. One of these should be carried on 

 each 7>lnte and the third about two feet 

 under the ridgo. In each of the 20-foot 

 houses, run eight li{;-inch returns, plac- 

 ing three on each wall and the others 

 in the middle of the house. In the 2fi- 

 foot house, use thirteen returns, with 

 six on the south wall. 



For the longer coils, use three 2l^-inch 

 flow pipes in each house, connecting 

 them to the main flow with a 4-inch pipe. 



While we should prefer to use 2-inch 



''The Boiler of Unequaled Fuel Economy" 



KROESCHELL BOILERS have no bulky, soot- 

 accumulating surfaces — you avoid the disagreeable 

 work and trouble indispensable to cleaning boilers 

 with complicated and tortuous back and forth fire 

 passages. 



The superiority of our boilers has resulted in the removal and abolish- 

 ment of hundreds of cast iron sectional boilers — in every instance 

 KROESCHELL BOILERS give more heat with the same piping with 

 less fuel. 



N-O-T C-A-8-T l-R-O-N 



There is a Kroeschell 

 for every Breenhouse 

 plant, be it lar^e or 

 small. 



The roeschel Twill 

 put high tempera- 

 tures into your heat- 

 ing lines. 



O-T C-A-8-T l-R-O 



Rose Range of Riverbank Greenhouses, Geneva, 111. Charles McCauley, Supt. 



Heated by No. 15 Krocschcll Boiler, Kroeschell 2-inch Return Piping System and 

 Kroeschell Generator. Greenhouses each 28 feet by 200 feet. Garland Construction. 



The mains are an-ansrcd to take care of a future adilltlon of 40.000 s(i. ft. of slass; 2-Inch returns 

 are used throuchnut tlic entire ranRe and each 2-lnch return line is controlled by l-lnch eate valve 

 (strictly a Kroeschell feature), Insuring perfect control. It is a gravity job; the circulation is perfect, 

 reaching the extn'me ends of range in fifteen minutes. The Kro<'schell (".enerator (the high speed gear 

 for hot water heating) Is also ustd for this system. 



"Your No. 15 Kroeschell Boiler heats our entire range. We maintain a temperature 

 of 60 degrees in our greenhouses, and this temperature is easily maintained, even in 

 the very coldest weather. Your boiler has given entire satisfaction. It is the best and 

 quickest heater I have ever used or seen. I have found the boiler very economical in 

 the use o'f fuel and labor, as it is n.tt necessary to use the best coal, and any labor will 

 do for a fireman. The Kroeschell Piping System with Generator works like a charm. 

 When I want to sulphur, I can heat the water up to 230 to 240 degrees and I get the 

 same results as from steam. Seeing is believing — all growers arc invited to call. Any 

 further information concerning boiler and piping system will be gladly given. We 

 had a large numb.-r of florists at our place recently, and they all thought we had the 

 finest equipped plant in the business." 



THE RIVERBANK COMP.\NIF.S, 

 CHARLES McCAULEY, Vice-President and Manager. 



WHEN YOU9UY-GET A KROESCHELL 



KROESCHELL BROS. CO., 



444 W. Eri* Street 

 CHICAGO, ILL. 



