154 



The Florists^ Review 



NOVBMBBR 17, 1921 



COAL 



JUST THE GRADE YOU WANT AT 



JUST THE PRICE YOU 



WANT TO PAY 



All the host gradp* from all the best fields, 

 sperlally selected for the RreenliouHe trade. 



POCAHONTAS, SPLINT. KENTUCKY, 

 HOCKING, ILUNOIS. INDIANA 



Our "Coal Trade Bulletin" explains everything 



SEND FOR IT 



THE GREeNHOUSC COAL CO. 



1976 TramportationBldg., Chicago. III. 



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 

 helpful, also, to have a sketch showing 

 the location of the houses. 



A LEAKING BOILEE. 



I have a sectional boiler and when 

 I take the screw out at the door, the 

 boiler leaks about a drop an hour. The 

 leaking stops as soon as I put the screw 

 in again. Now, I am using about from 

 six t« twelve pounds of steam. Is there 

 any danger of the screw 's blowing out 

 attliis pressure? Would it be advisable 

 to got a new front section? 



S. B.— O. 



It is judged that there is some error 

 in the statement regarding the leak, 

 since, if the leak is only one drop in 

 one hour, it would quickly "take up." 

 Even though the leak were as much as 

 one gallon in one hour, unless there is 

 a crack in the casting, which would be 

 likely to weaken the boiler, it could not 

 result in an explosion, provided the 

 water level is not allowed to drop to 

 the danger point. 



At six to ten pounds pressure per 

 square inch, there would be little dan- 

 ger that the screw would be blown out, 

 since it would not be likely to have even 

 one square inch of surface. 



FOR SHORT-SPAN RANGE. 



I intend to build throe short-span 

 greenhouses, 14x100 feet. The walls will 

 have three feet of glass and four feet of 

 concrete. I wish to heat this range with 

 steam to 60 degrees when the outside 

 temperature goes down to 25 degrees be- 

 low zero. The benches will be solid. 

 What size of boiler will be necessary? 

 Will it require a steam trap? What is 

 the best way to run the piping? 



E. M. O.— Pa. 



To heat the three houses to 60 degrees 

 when it is 25 degrees below zero, a boiler 

 rated at thirty horsepower will be re- 

 quired, and, unless the returns are twe 

 feet above the water level of the boiler, 

 it would be advisable to put in either a 

 steam trap or a pump to return the drip 

 water to the boiler. 



For Hot Water 

 and Steam 



KROESCHELL BOILERS have a 

 long-established reputation as 

 being the best for greenhouse 

 heating. No other make of boiler has 

 ever enjoyed such widespread pop- 

 ularity or earned such a complete 

 general approval. 



The various types and sizes of Kroe- 

 schell Boilers for Hot Water and 

 Steam efficiently meet the require- 

 ments for heating all styles and 

 sizes of greenhouses in all localities. 

 A maximum of heat is obtained with 

 a minimum of fuel waste. 



More glass is heated by Kroeschell 

 Boilers than by any other make of 

 boiler. Kroeschells are used in the 

 largest and most successful estab- 

 lishments. After thinking of the suc- 

 cess accomplished by Kroeschell 

 Boilers it is only reasonable to be- 

 lieve that there are no better boilers 

 for greenhouse heating. 



Quick Delivery 



Send Your Order 



By Telegraph 



or telephone it, at our expense. 

 Long Distance Phone, SUPERIOR 

 8680; ask for greenhouse depart- 

 ment. We have a complete stock 

 of all sizes and styles of boilers and 

 can ship to you without delay any 

 boilers you need. You can depend 

 on us to get your boiler to you at 

 once. 



KROESCHELL BROS. CO. 



444 W. Erl« Str««t 



CHICAQO, ILL. 



