■•*.-.■ " . '•■"•^ 



JlLY 23, 1»08. 



The Weekly Florists^ Review^ 



57 



WILKS 



Hot Water Boilers 



Are Best for 



•Small Greenhouses, etc 



••• 



•••• 



NO NIGHT FIREMAN REQUIRED 



With Our 



Self-feeding Hot Water Boilers 



Keep an even and continuous fire for ten hours and long^er 



without any attention 



VERY ECONOMICAL IN FUEL 



^ Send for Our Greenhouse Catalogs 



S. WILKS MFG. CO., 



3S23 Shields Ave. 



CHICAGO 



Mention The Review when you write. 



fligh-firade Boilers 



gJLSS^. For GREENHOUSES 



STEAM and HOT WATER 



GIBLIN & CO., Utica, N. Y. 



Mention The Review when you write. 



and use a low pressure plant with the 

 thin tubes, unless you use long sleeves 

 and calk them so as to withstand a good 

 pressure. The houses 21i^.x50 would best 

 have the same amount of radiation. The 

 house piped with 2-inch pipe should have 

 the piping increased so there will be four- 

 teen lines in all, counting both flows and 

 returns. L. C. C. 



THE EXPANSION TANK. 



I notice in nearly every instance, when 

 referring to the expansion tank, you ad- 

 vise that it should be connected to the 

 main return near the boiler by means of 

 a %-inch pipe. I would therefore ask: 

 Where no relief valve — or exit, for 

 air generated in the boiler — is used in 

 any part of the heating system, would 

 you advise the connection of the tank to 

 the main return near the boiler? At 

 present my tank is connected hy a %■ 

 inch pipe to the main flow pipe near the 

 boiler, that being the very highest point 

 in the system. The bottom of the tank 

 is eight feet six inches above the flow 

 pipe, and is as high as it can be located. 



In calculating the radiation of pipe do 

 you figure the inside or outside diameter? 

 As I now propose to increase the system 

 to a little over .500 feet of 2-inch piping, 

 this will give me, taking the U. S. Heat- 

 ing Co. as authority, 376 feet of radiat- 

 ing surface, or .753 per foot for the out- 

 side diameter of the 500 feet of 2-inch 

 pipe. Am I correct? J. L. B. 



By placing the expansion tank on the 

 main flow at the highest point one de- 

 feats the main object of a closed system 



THE KROESCDELL BOILER 



IB THK ONLT PKRHECT 



Hot Water Boiler 



Vot Oast Iron 



Has tblD waterways. Heats quickly. It is the 

 most efficient, safest and most economical 

 boiler built. Vary powartnl. 15 sizes. 

 heatiDK from the smallest grecnhoase up to 

 60,000 square feet of Klass to 60 degrees, at 

 16 degrees below zero. 



Prices and catalogue on application. 



KROESCHELL BROS. CO., 51 Erie St., CHiaOO 



There Is a Splendid Chapter on 



Greenhouse Heating 



in The Florists' Manual 



By WILLIAM SCOTT 



A complete reference book for commercial florists. 253 large pages, 

 fully illustrated. Treats on over 200 subjects concerning greenhouse build- 

 ing, heating, management, and plant culture. It tells you just what you 

 want to know, in just the way you want to be told. 



Second Edition, Price $6.00, Prepaid by- Kxpreta or BKail. 



FLORISTS* PUBLISHING CO. 

 334 Dearl>orii Street CHICAGO 



www Always mcntioo tbc FloristS* RcvieW wbeo writinc advertiam. «r «r 



