wjT^ ijrrrT^rw-T 'W'r'.^T -i 



86 



The Weekly Florists' Review. 



rr^/jefmr^.-Hfi', T^^ffW^ 



February 16, 1911. 



SEND FOR 

 CATALOGUE 



The Kroeschell does our work easier than cast iron 

 boilers and saves 20^6 to 2Sfo fuel. 



The No. 4 boiler is heating 10,000 square feet of glass— it would take care of 13,000 

 square feet easily. Have no trouble to keep temperature of 50* and 60" In coldest weather. 

 The boiler has given perfect satihfaction. We had two cast Iron boilers, one rated ^or 

 1200 feet of pipe and one rated for 1.'500 feet. These boilers never did the work at their 

 best and when the greenhouses were new. According to our experience with yours, we 

 will save 20% to 2.^.% of fuel. hj^D BR03.. Lake Forest. 111. 



KROESCHELL BROS. CO., 



444 West Erie St., 

 CHICAGO, ILL. 



Mention The Review when you write. 



about $2.25 per ton, while hard coal 

 would probably cost about^ $7. This 

 would make the soft coal much more 

 ecouomical. The use of some of the 

 smokeless or Pocahontas coals would 

 probably give cheaper and fully as sat- 

 isfactory results as hard coal. Any 

 chimney that will do for soft coal will 

 answer for hard or smokeless coal. 



AMOUNT OF PEESSURE. 



I am writing you in regard to the 

 open and closed systems of hot water 

 heating. As T understand it, the open 

 system is connected to the highest 

 point of the flows with an open expan- 

 sion tank. In the closed system the 

 expansion tank must be tight, with the 

 addition of a safety valve. There is a 

 safety valve on my tank at present. 

 What pressure would the tank carry? 



E. F. K. 



The amount of pressure that should 

 be carried in a closed hot water system 

 will depend partly on the strength of 

 the boiler and of the expansion tank, 

 and partly on the diflSculties that have 

 to be overcome in the way of circula- 

 tion and shortage of radiation. As a 

 rule, the system should be capable of 

 standing at least forty pounds, and 

 often the tanks used are guaranteed for 

 200 pounds. The pressure should range 

 between these two points. The lower 

 the pressure, the greater will be the 

 economy in heating, and at the same 

 time the greater will be the expense of 

 installing the system. 



STEAM OE HOT WATER? 



Will you please inform me which 

 heating system, steam or hot water, is 

 better adapted for the northern lati- 

 tudes, where the thermometer some- 

 times registers about 35 to 40 degrees 

 below zero, and the inside temperature 

 should be 60 to 75 degrees at night? 



M. L. 



Whether hot water or steam should 

 be used will depend largely upon the 

 size of the plant, as hot water is better 

 for small ranges and steam for large 

 ones. Generally speaking, it is ad- 

 visable to use steam only in greenhouse 

 plants large enough to warrant the 

 employment of a night fireman. In 

 particularly severe climates, the differ- 

 ence in the cost of the piping for steam, 

 as compared with that for hot water, 

 might make it desirable to use steam 

 even in comparatively small ranges. 

 For ranges of 10,000 square feet and 

 upwards, steam can generally be used 

 with good success. 



"SUPERIOR" 



To all others for Greenhouse Heating. 



Made in Nine (9) sizes for Hot Water. 

 Send for cataloKue and list of growers tliat are using; this boiler. 



Superior Machine & Boiler Works 



840-860 West Superior Street, CHICAGO, ILL. 



Mention The Keview when you write. 



y. 



Sacoessora to the 

 John Davis Company 



No loas from sudden drops in 

 temperature if you use the 



Hughson Regulating Valve 



In connection with a steam heating plant. Carry 40 or 

 50 pounds pressure on the boiler and set the valve for 5 

 or 10 pounds— it will do the rest. You'll be free from 

 worry this winter, if you follow this advice: " Install a 

 HuKhson ResulatlnK Valve when makinv your 

 repairs " Ask fur our CaUilogue. which also shows 

 Steam Traps and other devices. 



HUGHSON STEAM SPECIALTY CO. 



5021-5023 S. State St., CHICAGO, ILL. 



Mention The Review when vou write. 



WRTTB TO 



SEO. B. LIMBERT & GO. 



557 ralton St, OIIUGO 



—For Prices on— 



fienoioe 

 Wroflsbt Iron Pipe 



Aak For Catalocne. 



WILKS 



Hot Water Boilers 



The Most Kconomioal Boilers 

 for Greenhouses :: i: 



No night fireman required with our 

 Self-feeding Hot Water Boilers. 



tuat fsr CatalsMS >■' Prices. 



S. WILKS MFG. CO. 



S528 Shields Ave., CHICAGO 



fit gr Always mention the FloristS* RevieW when writing advertisers. W W 



