J 38 



The Weekly Florists' Review* 



November 29, 1906. 



Greenhouse Heating. 



NOT ENOUGH PIPING. 



I have a greenhouse, 10x20 and ten 

 feet to the ridge, with brick foundation. 

 The north side and west end are papered 

 and clapboarded, the inside sheathed 

 with matched boards. The south side 

 and cast end have glass. The boiler is 

 in the northeast corner. The flow pipe 

 is li/[>-inch, with expansion tank at high- 

 est point. The flow drops three inches, 

 then returns under the bench on the 

 south side, then with a fall of two inches 

 returns to north side, where it divides 

 with a tee into two 1 1^4 -inch pipes. These 

 connect before entering the boiler. Is 

 there enough piping and have I arranged 

 it properly for Wisconsin climate? 



L. C. P. 



I think the following plan of piping 

 will be much more satisfactory than what 

 you have installed. In fact, the present 

 piping is not more than half what should 

 be installed for an exposed house with 

 hot water heat in your climate. Starting 

 from the boiler, if it is desirable to use 

 an elevated flow because of doors or 

 other openings, carry a 2-inch flow pipe 

 to the west end, eighteen inches from 

 the roof along the north side, then drop 

 at the northwest corner to a coil made of 

 seven 1^4 -inch pipes which should have a 

 gentle grade, say eight inches from the 

 northwest corner to the boiler. Run this 

 coil under the bench around the three 

 exposed sides of the house. Lay the mani- 

 fold horizontal so the seven pipes will 

 form a gridiron under the bench on the 

 three sides of the house. Place a mani- 

 fold on the end of the seven pipes near 

 the boiler and carry a return from this 

 manifold back to the boiler by a single 

 114 -inch pipe. To the main return near 

 the boiler connect a %-inch pipe which 

 should run into the bottom of a well 

 elevated expansion tank. Do not connect 

 the expansion tank to the main flow, but 

 place an aircock in the highest point of 

 the main flow. L. C. C. 



NEEDS A C31ECK- VALVE. 



We have an eighteen horsepower Huber 

 traction boiler with 4-inch flows for 

 steam and 3-inch returns. The trouble 

 is that when we get up a pressure of 

 steam of about ten pounds it forces the 

 water back through the return pipes until 

 it is all out of the boiler column. Would 

 a check-valve in the 3-inch return pipe 

 work; that is, would the pressure of 

 steam permit it to open enough to let 

 the condensation back into the boiler? 

 Or would the pressure from the boiler 

 be greater so that it would keep the 

 check closed and the condensed steam 

 out of the boiler? Our boiler is about 

 three feet below our coils. We have no 

 steam-trap or anything but gravity to get 

 the water back to the boiler. 



H..F. Co. 



The installation of a swing check in 

 the main return near the boiler should 

 prove a decided benefit. It may, how- 

 ever, prove necessary to discharge the 

 condensation into a hot well and return 

 it to the boiler by means of a trap or 

 feed pump unless the boiler can be 

 lowered considerably. If you have valves 

 in the system, close the valves in the re- 

 turn as you begin to fire and keep them 

 closed until the system is hot, then open 

 them and the circulation will be com- 



WILKS GREENHOUSE HEATERS 



The Wilks Greenhouse Heaters 

 are all Steel Self>Feedera. 

 Will run 16 hours at a time 

 n^ithout attention* 



NO NIGHT FIREMAN REQUIRED 



Can be used with either 

 HARD OR SOrr COAL. 



BEXrO FOB OUS ITEW CATAIiOOUE. 

 MADB BT 



S. WILKS MF6. CO. 



35tli and Shields Avenue, 



CHICAGO, ILL. 



mo DOOB 



Mention The Review when yon writ^. 



A Standard Pumping Engine 



Simple, Reliable, Dura- 

 ble, Practical, Efficient. 

 Send for catalof^ue. 



The Standard Pump & 

 Engine Co. 



CLEVELAND, OHIO. 



Mention The Review when you write. 



pleted. Allow the air vents to remain 

 open a wee bit so as to lead the live 

 steam into the system should it for any 

 reason become cold. These precautions, 

 with a swing check in the return, should 

 remedy the aifficulty unless the diiference 

 in level is not sufficient for a gravity sys- 

 tem. L. C. C. 



CHANGING TO STEAM. 



I have three houses, one for mums and 

 plants, 14x60 feet; one for smilax, 14x 

 60 feet; a carnation house, 14x130 feet, 

 and a lean-to, 6x60 feet. The cellar 

 under the shed in which is the boiler is 

 7x42 feet. I am now using hot water, 

 but wish to change to steam on account 

 of the length of the carnation house. I 

 have planned to run a 3-inch main in a 

 trench along the cellar wall, branching 

 into each house, with 2-inch flow pipes 

 overhead under the ridge, and return 

 with 114-inch, or l^A-inch pipes under 

 the benches. How many returns will I 

 need in each house with outside temper- 

 ature, at times, 10 to 20 degrees below 

 zero? What horsepower boiler? I in- 

 tend to use a tubular horizontal and 

 want one large enough to carry all the 

 houses if they were extended to 130 feet. 



C. C. W. 



The following amount of radiation 

 will be required by each of the houses 

 in question: Violet house, 6x60, five re- 

 turns of 1^4 -inch pipe. The cooler house, 

 14x60 feet, a 2-inch flow and eight I14- 

 inch returns. The warmer house, 14x60 

 feet, a 2-ineh flow and nine 114-inch re- 

 turns, while the house 14x130 feet should 

 be provided with a 2-inch riser and eleven 

 1^4 -inch returns. A boiler rated to carry 



DO TOn SNOW ABOUT THK 



Martin Wdng Me 



IT SAVES COAL 



MARTIN GRATE GO. '^^r^" 



Mention The Review when you write. 



fligli°Grade Boilers 



g£SSJ„, For GREENHOUSES 



STEAM and HOT WATER 



GIBLIN&CO.,lltica,N.Y. 



Mention The Review when you write. 



LOUIS A. RIEMER 



MILWAUKEE, WIS. 



PRACTICAL HEATING ENGINEER 



BoIIerB or complete heating plants furnished 



or installed. Write for catalogfue. 



Mention The Review when yon write. 



PEERLESS SULPHIR BLOWER 



"A erreat improvement over the bellows." 

 Price, $4.00 F. O. B. Chicago. 



MpMflRR All 9i. rn l'-21 ^' Clinton St. 



nibinunniin <» uUi Chicago, ill. 



Mention The Review when you write. 



2,500 square feet of radiation should be 

 amply large to carry all these houses 

 when extended to a uniform length of 

 130 feet. L. C. C. 



TROUBLE WITH CIRCULATION. 



Will you tell me how to improve the 

 circulation in my greenhouse? My house 

 is 22x100. I have a twenty horse-power 

 boiler with a 3-inch flow overhead, con- 

 tinuous fall, and at the farther end 

 drops under the bench and returns in 

 eleven 2-inch level pipes. These pipes 

 connect in a 2-inch return to the bottom 

 of the boiler. Have open expansion 

 tank, the bottom of which is two feet 



