92 



The Florists' Review 



February 17, 1916. 



overcome the trouble at the expansion 

 tank, or should the expansion tank be 

 connected to the highest point? The 

 boiler is below the return pipes. 



C. W. S.— Ohio. 



The drawing shows house No. 1 to 

 be 30x95 feet and the radiation is pro- 

 vided by two 2-inch flow pipes, each 

 of which supplies six 2-inch returns. 

 It is stated that the present radiation 

 provides from 48 to 60 degrees, pre- 

 sumably varying with the outside tem- 

 perature, but the temperature desired 

 in the houses is not stated. As now 

 arranged, each of the 2-inch flow pipes 

 in house No. 1 supplies, including its 

 own surface, something over 400 square 

 feet of radiation, which is twice as 

 much as can be handled to advantage 

 by a 2-inch flow pipe. We would con- 

 sider the radiation about right for 50 

 degrees in zero weather, but would use 

 in the house three 2%-inch flow pipes 

 and eleven 2-inch returns for 50 de- 

 grees. If a temperature of 60 degrees 

 is desired, three 2i^-inch flows and fif- 

 teen 2-inch returns will be needed. 



In house No. 2, which is a lean-to 

 15x50 feet, there are one 2-inch flow and 

 five 2-inch returns, in addition to the 

 main fiow and return pipes leading to 

 house No. 1. For this house we would 

 use one 2i^-inch flow and four 2-inch 

 returns for 50 degrees and six returns 

 for 60 degrees, provided the flow and 

 return pipes to house No. 1 are as large 

 as 2%-inch. We would use either one 

 4-inch or three 214-inch main flows and 

 returns for house No. 1, for 60 degrees. 



The principal trouble appears to be 

 from attempting to carry 400 square 

 feet of radiation in house No. 1 with 

 2-inch flow pipes. This, of course, 

 checks the circulation of the water, 

 causing it to boil, and, since the ex- 

 pansion tank is connected with the re- 

 turns, it is not strange that the trou- 

 ble reported occurs. We would arrange 

 the flow pipes to run downhill and con- 

 nect the expansion tank with the high- 

 est part of the system. Then, if a tem- 

 perature of 50 degrees is all that is 

 required, we would substitute 2^ -inch 

 for the 2-inch flows in the large house. 

 If 60 degrees must be provided, we 

 would use the radiation suggested 

 above or attach a generator. 



OIL FOE FUEL. 



We should like to know whether it is 

 practical to use fuel oil in greenhouse 

 heating. If so, at what price would oil 

 be as cheap as steam coal at $6 per tont 

 Is there an oil burner which would be 

 reliable if used in a hot water boiler 

 manufactured by the American Radia- 

 tor Co., and which would not require 

 the services of a fireman for eight to 

 ten hours! Do you know of any con- 

 cern that manufactures a trustworthy 

 oil burner? C. F. B. — Wash. 



While there may be some improved 

 form of oil burners on the market, I do 

 not know of any that are adapted for 

 use in small boilers and that do not re- 

 quire a regular attendant. I have no 

 personal knowledge of the use of fuel 

 oil with the boilers mentioned, but do 

 not see whjr the result would not be the 

 same as with other boilers. 



Toledo, O. — The Western Avenue 

 Greenhouse Co. has been incorporated 

 by A. G. Imoberstag, Eleanor M. 

 Imoberstag and Myrtle A. Schroeder. 

 The authorized capital is $10,000. 



Your Best Friend! 



The Standard Thermostat 



is the best business partner and 

 friend you can have. It protects 

 your trrcwing things from ruin by 

 sudden changes in temperatures. It 

 is infallible— inexpensive— more re- 

 liable than a night fireman. 



The Standard Thermostat will 

 rlnB a bell whenever your green- 

 house temperature rises or falls to 

 the danger point. Place the bell 

 at your bedside or anywhere you 

 please. 



This is a word to the wise— a buy 

 word to the wise grower. Sudden 

 temperature ups and downs ruin 



thousands of plants every winter. 



Protect yours ! Install a Standard 



Tliennostat now. It costs only 



$10.00. Write today. 



(O. H. 3, same rb ti. H. 4, ODiy not In 

 locked case, $5.00.) 



STANDARD THCRMOMETCR CO. 



65 Shirley Street. BOSTON, MASS. 



Mention The KeTlew when you write. 



There is a Splendid Chapter on 



Greenhouse Heating 



IN 



THE FLORISTS' MANUAL 



Br 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 Express er Mail. 



FLORISTS' PUBLISHING CO. 



508 South Dearborn Street, CHICAGO 



IMICO 



Hot Water Boilers 



Made by 



BDnois Malleable Iron Ok 



1MM825 Divcney Boalevard 



CHICAGO 



Are Neted for eeel economy end 

 resulte senerelly 



SEND FOR CATALOOUC 



Mpntion The Review when yon write. 



Wrought Iron Pipe, thoroughly overhauled, 

 with new threads and couplings, guaran- 

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 to sketch. It will pay you to correspond 

 with us. 



ALBERT & DAVIDSON, Inc. 



I17-S8S Union iTenne. BBOOKLTN, N. T. 



Al^nys mention the Florists' Review when 

 writini; advertisers. 



Dixon's Graphite 

 Pipe Joint Compound 



Saves time, money, temper 

 and tools. Makes tighter 

 Joints. Never sets like a 

 cement. Keeps joints well 

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 let No. 64-D. 



Jotcfh Dixon Crucible Company 

 Jersey Cily. N. J. 



Always mentioif the Florists* RevlOT^ 

 when wrltlnB advertisers. 



