96 



The Florists' Review 



Sbptbmbbk 11, 1914. 



BUV UIKKCT 

 FACTORY TO IT8£B PRICES 



MORE KROES CHELL BOILERS 



USED FOR 



GREENHOUSE 



HEATING THAN 



(ANYOTHEj 



[AKI 



KROESCHELL BROS. CO., 



444 WrCtT ERIE STREET 

 CfHCAQO, ILL. 



Mention The Review when yon write. 



to 63 degrees, are to be grown, the re-;, 

 turns should be increased to ten 2-inob 

 or twenty 1-inch pip^s. 



In choosing a boiler for heating the" 

 two houses, it will be advisable to se- 

 lect one with a rating of 1,200 square 

 feet of radiation if a temperature of 

 50 to 55 degrees is desired, and 1,W0 

 square feet for 60 to 65 degrees. If 

 there is a likelihood of an increase in 

 the size of the range, it woul;j be well 

 to provide heating capacity at this 

 time to the extent of at least an ad- 

 ditional 70-foot house. In case a still 

 greater increase is to be made, it will 

 be better to provide an additional boil- 

 er when the addition is made. 



AN INDIANA LETTUCJE HOUSE. 



We are building a greenhouse, 

 21x50, and intend to grow lettuce and 

 vegetable plants. We have a hot water 

 boiler, with a rating of 1,250 square 

 feet. It has six 2-inch outlets and the 

 same number of openings for returns. 

 Please state how many runs of 2-inch 

 pipe, mains and returns, will be neces- 

 sary to heat the house properly. What 

 day and night temperatures should be 

 maintained? A. P. R. 



I would suggest the use of two 2^- 

 inch flow pipes and eight 2-inch returns. 

 While it would be desirable to have 

 2V^-inch openings in the boiler for 

 the flows and returm^ it will answer 

 if the flows and returns are re- 

 duced to 2-inch at the boiler. If 

 piped as I have suggested, the flows 

 should be on the plates and the returns 

 should be either on the walls or under 

 the side benches, if raised benches are 

 used. Another way of piping the house 

 would be to use three 2-inch flow pipes 

 and nine or ten 2-inch returns. With 

 this system of piping, which would 

 give good results if there are raised 

 benches in the middle of the house^ 

 one of the flow pipes should be under 

 the ridge and three or four of the re- 

 turns should he under the middle 

 bench. 



With this piping there should be no 

 difficulty in maintaining, in zero 

 weather, a night temperature of 50 to 

 55 degrees and a day temperature 10 

 degrees higher, which will be about 

 right for lettuce. If the head varie- 

 ties of lettuce are grown, a slightly 

 lower temperature than this will be 

 desirable, unless a little ventilation is 

 given. 



In reckoning the radiation needed, it 

 should be understood that no allowance 

 bAf( been made for glass in the side 



IMICO 



Hot Water Bollen 



— Made by 



Illinois Malleable Iron Co. 



1801-1825 Diveney Boulevard 



CHICAGO 



Ar* Net«d for coal oconomy aiMl K9ti 

 rosults conorally 



SEND FOR CATALOQUR 



Menrlnn Th» RatIpw ■when Ton write. 



« 



The Superior 

 Boiler" 



For Greenhouse Heating 



Snpenor Hachine & Boiler Works 



840-«80 W. Supttrior Str««t 

 CHICAQO 



Mention The R»t1cw when yon writ*. 

 DO TOO Know ABOUT THK 



Martin Rocking (irate 



IT SAVES COAL 



NAKTDi GRATE CO.,'«".£%S!r"- 



Mention The Itevtew when you write. 



walls. If glass is used in the walls, 

 it will be advisable to add an addi- 



This boiler Is guaranteed to doth* 

 work and costs less to inttaH 

 and operate. Write for pricM 

 and recommendations. 



CompUto Installations or Aitorationt. 



METROPOLITAN MATERIAL 

 COMPANY 



Patontsd and Pandins 



IRON FRAME, CURVED 'eAVE a"* 

 SEMI-IRON GREENHOUSES 



Greenhouse Designers - Heating Engm^'* 

 Hotbed Sash - Glass 



1398-1408 Metropolitan Ay*""' 

 BROOKLYN, N. Y. 



Mention The Rerlew when yoo write^^ ,^ 



tional return for each thirty inches 



glass. 



! 



