Dkcember 3, 1908. 



The Weekly Florists^ Review* 



71 



DO YOD KNOW ABOUT THE 



Martin Rocking Grate 



IT SAVES COAL 



MARTIN GRATE CO. "^'^ca^' 



Mention The Review when you write. 



of radiation as 4 is contained times in 

 3,360, or 840. To heat this house with 

 ll^-inch pipe will require 2.301 times 

 840, or 1,932 lineal feet of l^d-inch 

 pipe. But it is not economical to use a 

 li^-inch pipe as a flow pipe, and we 

 must use a larger one. "We find that a 

 3-inch pipe is capable of carrying 900 

 square feet of radiation. This will then 

 be ample for the plant requiring 840 

 square feet. We also find that 100 lineal 

 feet of 3-inch pipe is equivalent to 91.6 

 square feet of radiation; so, instead of 

 using 1,932 lineal feet of 11/4 -inch pipe, 

 we require 840 less 91.6, or 748.4 square 

 feet of radiation in 1^4 -inch pipe, or 748 

 times 2.301, or 1,721 lineal feet of 114- 

 inch pipe in returns and 100 lineal feet 

 of 3-inch pipe for a riser, to maintain 

 a temperature of 70 degrees in a house 

 20x100 in severe weather, in the latitude 

 of Chicago. So you see it is not a. sim- 

 ple, empirical problem, to be figbfcd by 

 rule of thumb. L. C. C. 



NOT AN EXPERT PLUMBER. 



I have just completed a new house, 

 21x100 feet, but am having trouble with 

 my heating plant. I could get no skilled 

 plumber, so I suppose that is where the 

 trouble lies. 



I have a Wilks hot water heater, with 

 two 3-inch taps, and from one of these 

 taps two 2-inch feeding pipes are taken, 

 each connecting with four IV^.-inch pipes, 

 running under the benches. From the 

 other 3-inch boiler tap a 2-inch feeding 

 pipe runs, and is similarly connected to 

 four li/>-inch pipes under a third bench. 

 The pipes under each bench are connect- 

 ed at each end. The four pipes are all 

 on the same level and have a rise of 

 about eighteen inches from the boiler 

 to the opposite end of the greenhouse. 

 The plumber's theory seemed to be that 

 of a single-pipe system, with the hot 

 water running up and returning in the 

 same pipe. It does not work at all. The 

 hot water runs up one pipe and then re- 

 turns in the other three. The circulation 

 is very slow and I can get no results in 

 heat. Another trouble is that the hot 

 water seems to run from the 2-inch 

 feeder back through the 2 inch return 

 without running up through the radiat- 

 ing pipes, forming a sort of short cir- 

 cuit. 



The expansion tank is connected to one 

 of the 2-inch return pipes near the 

 boiler. 



One florist has suggested to me the 

 following plan: Run two 3-inch pipes 

 from the boiler taps, about five feet 

 straight up above the boiler; then run 

 these two 3-inch pipes through the green- 

 house to the opposite end on a gradual 

 downward slant, and, on reaching the 

 other end, tap the 3-inch pipes and drop 

 down to the return pipes under the 

 benches. These returns also would run 

 on a downward slant. Would this plan 

 work? If so, how should the expansion 

 tank be connected? 



I am afraid the twelve li^inch re- 

 turn pipes will not make sufficient radiat- 

 ing surface. How would it do to run one 

 or two lij-inch or 2 inch pipes along 



Improved 

 Recording 



THERMOMETER 



Just the Thing for 

 Your Greenhouse 



Illinois State Florists' AsBociation. 



Edwards ville, 111., Oct. 28, 1908. 

 The recording thermometer is work- 

 ing o. k. I would not part with it for 

 twice the cost. Send me $1.00 worth 

 of charts for the same. 



J. F. Ammann. 



No. SOO. 



SEND^ FOR PRICES 



Parker Mfg. Co. 



Clifton and Shirley Sts., 



BOSTON, MASS. 



Mention The Review when you write. 



The Prize Beauties at Chicafiio Sliow 



Were Grown by a User of 



The Morehead Return Steam Trap 



Write us tor Information on the best 

 way of pecuring Even Temperature in 

 Steam Heated Greenhouses . 



Morehead Mfg. Co. 



1043 Grand River Ave. DETROIT, MICH. 



Mention The Review when you write. 



THE KROESCflELL BOILER 



18 THE ONLY FKRVXCT 



Hot Water Boiler 



Not Cast Iron 



Has thin waterways. Heats quickly. It is the 

 most efficient, safest and most economical 

 boiler built. Very powertnl. 15 sizes, 

 heating from thelsmallest greenhouse up to 

 50,000 square feet of glass to 60 degrees, at 

 15 degrees below zero. 



Prices and catalogue on application. 



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



Mention The Review when you write. 



the sides of the house? I want most of 

 the house for carnations, but one end 

 will have roses. There is a partition 

 and I can easily make it hotter by run- 

 ning more j>ipes in that end. It is 

 tlie end next to the boiler. I am located 

 in Iowa. F. M. 



The plan of piping last suggested is 



a good one, but you will find it still bet- 

 ter to carry tlie 3-inch feed pipes on a 

 gradual slope upward, so as to have the 

 highest point in the system at the far 

 end of the feed pipe. To heat this house 

 with hot water, using l^/^-inch pipe for 

 returns, will require thirteen pipes ar- 

 ranged under the benches and along the 

 side walls. The two 3-inch flow pipes 



