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120 



The Florists' Review 



Sbptehbbb 16, 1920 



Greenhouse Heating 



SuBSCRiBEKS 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. 



EXTENDING SYSTEM. 



Will you please give me a heating 

 plan for a greenhouse 25x100 feet, 

 which is ten and one-half feet high to 

 the ridge and is all glass except the 

 north end, which adjoins the boUer 

 room. The eaves are six feet high. 

 There are 4-foot benches along the side 

 walls and at the south end, with two 

 benches in the middle. 



The house is to be heated with a 

 Wilks hot water boiler, 30x48, which 

 can be sunk in a pit of desired depth. 

 A temperature of 60 degrees is wanted 

 in zero weather. A wood partition runs 

 across the house thirty feet from the 

 boiler room. This section of the house is 

 piped with a li^-inch pipe on each 

 eave. The two pipes almost meet at 

 the center of the partition and are 

 highest at this point. There is a drop 

 here to two 1-inch pipes under the 

 benches. There is also a 1-inch pipe 

 connected to the l^^-inch pipe at the 

 north end of the house that runs two 

 lines on each side wall. They are all 

 connected to the returns, which are the 

 same in size as the flow pipes. The 

 expansion tank is connected to one of 

 the flow pipes close to the boiler and 

 the bottom of the tank is twenty inches 

 higher than the highest pipe in the 

 house. 



This system has given entire satis 

 faction, and I should like to pipe the 

 remaining seventy feet and not disturb 

 this any more than would be necessary 

 to get the best results. This house 

 has been heated with a 24x42 Wilks 

 boiler. B. P. F. 



T am not able to make out just how 

 the north thirty feet are piped, but if 

 I have made no mistake, there are two 

 1-inch returns under each of the four 

 benches and two upon each of the side 

 walls. I understand that there is a 

 1^-inch flow pipe upon each wall, be- 

 sides one or two 1-inch pipes which 

 supply the wall coils. 



I suggest not to extend the present 

 system so as to heat the full length of 

 the house, owing to the small size of the 

 pipes, even though they give good re- 

 sults in a house thirty feet long. It will 

 be possible to put in a heating svstem 

 in the south seventy feet of the house 

 without disturbing the present system, 

 although the main flow and return pipes 

 will pass through the north part of the 

 house. For the south part of the house 

 I suggest that you use five 2-inch flow 

 pipes and ten l^^-inch returns. If 

 would be possible to take out the flow 

 pipes now in the north end of the house 

 and connect each of the coils with the 

 mains leading to the south part of the 

 house by means of a l^^-inch pipe. 



The flow pipes should be run down- 



" Ain't it a Grand and Cloriowu Fmmling ?" 



Heat Your Houses with 

 Kroeschell Boilers 



YOiTLL 

 YOU'LL 



HAPPIER 

 RICHER 



TO THK MAN WHO NEKOS A BOILEII 



"The customer's interest firsf'-is the basis of the KROESCHELL sUndard. This 

 principle makes the KROESCHELL Policy the most liberal of all in the Oreen- 

 house Boiler business. The great variety of boilers that we make places us in a 

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 of boiler best suited for the conditions. For this reason we always furnish the 

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CAN SHIP 

 ANY SIZE 

 AT ONCE 



NOT 



CAST 



IRON 



NOT 

 CAST 

 IRON 



TELKORAPN 



ORDERS AT 



OUR EXPENSE 



The KROESCHELL has proven its worth in many of the large establishments in 

 this country. It has frequently been selected by the most careful buyers in 

 competition with all other types of boilers. Its efficiency and capacity are com- 

 pletely beyond any other boiler. 



KROESCHELL BOILERS have no bulky, soot accumu- 

 lating surfaces— you avoid the disagreeable work and 

 trouble indispensable to cleaning boilers with compli- 

 cated and tortuous back and forth passages. 



The superiority of our boilers has resulted in the removal and abolishment of 

 hundredsof cast iron sectional boilers— in every instance KROESCHELL BOILERS 

 give mora beat with the same piping with less fuel. 



WHEN YOU BUY -GET A MROESCHEU. 



KROESCHELL BROS. CO., 



444 W. Eri« %U—\ 

 CHICAGO, ILL. 



