124 



The Florists^ Review 



Decbmbbb 14, 1916. 



grees. The height of the walls is four 

 feet. "What size and number of pipes 

 should be used if the walls and roof 

 are entirely of glass and the rafters are 

 sixteen feet long? Occasionally the out- 

 door temperature here drops to 15 de- 

 grees below zero. 



We also enclose a pencil sketch of 

 a house 12x100, with 4-foot walls and 

 8-foot rafters. Please inform us how 

 many and what size of pipes will be re- 

 quired to heat this house if the walls 

 are entirely of glass; also if the back 

 wall is of boards. Describe how the 

 pipes should be run, and state also 

 whether the hot water heater shown in 

 the enclosed circular will heat the 

 house. You will note that the heater 

 has a large firebox, which is surrounded 

 by water at all times. 



Please tell us, also, what piping 

 should be used in a house forty to 

 seventy-five feet long and of the same 

 dimensions otherwise as the second 

 house we have described. In other 

 words, what effect does the length of a 

 house have on the piping? R. M. — 111. 



For a house 25x100, with glass side 

 and end walls four feet high, to be 

 heated to a temperature of 60 to 70 de- 

 grees when the outside temperature is 

 15 degrees below zero, we would sug- 

 gest using three 2%-inch hot water 

 mains and eighteen 2-inch returns. 

 Place one flow upon each plate and the 

 other two feet below the ridge. Six 

 returns may be in coils upon each wall 

 or under the side benches, and the 

 others may be distributed under the 

 middle benches. 



To heat a house 12x100, with walls 

 four feet high and with 8-foot rafters, 

 to 60 degrees when the walls are all of 

 glass, we would use three 2V2-inch flow 

 pipes and nine 2-inch returns, arranging 

 the pipes as suggested for the other 

 house, except that there would only be 

 three returns connected with each flow 

 pipe. Two flows and ten returns might 

 also be used. If the north wall is of 

 boards, leave out one of the returns on 

 that side, and if the wall is not much 

 exposed a 2-inch flow pipe may be used 

 upon the north plate. 



We would not make any particular 

 difference in the piping of houses from 

 forty to 100 feet long, except that 2- 

 inch pipe may be substituted for the 

 2 1^ -inch flows in houses forty and fifty 

 feet in length, and it would answer if 

 1%-inch pipe were used for the returns, 

 increasing the number proportionately. 



It is difficult to make a definite esti- 

 mate of the capacity of a boiler from 

 the grate area ouly. If it has a liberal 

 amount of fire surface, we would con- 

 sider that a boiler having an 18-inch 

 grate is adapted for 300 to 325 square 

 feet of hot water radiation. For this, 

 however, we would prefer a smoke pipe 

 at least eight inches in diameter, in- 

 stead of six or seven inches. 



It is seldom that a greenhouse twelve 

 feet wide has rafters eight feet long, 

 or four feet of glass in the walls. With 

 only two feet of glass in each wall and 

 rafters seven feet long, the amount of 

 radiation could be reduced twenty-five 

 per cent. A 50-foot house would then 

 require 300 square feet of radiation. 



BUFFALO. 



The Market. 



Stock is not quite so abundant as 

 previously, this probably being due to 



STEAM AN I) 

 AIR PIPE 



INLET 



'Detroit" Return Trap -the heart of the 

 "Detroit" Systems. 



OUTLET 



IMPORTANT 

 Watch Your Condensation 



Heating Systems are very often under comparatively low pressure, and it is 

 desirable to remove the condensation from them as quickly as possible and 

 at the same time to return this condensation to the lioiler, which may be at a 

 considerably higher level than the apparatus drained, or a long distance from 

 it. In such cases the 



« 



Detroit" System 



is the most effectivs machine for draining the pipes, discharging the con- 



ny desired point. It is automatic in its operation, requiring 



practically no attention from the engineer, and is much more economical 



densation to any desired point. It is automatic in its operation, requiring 

 ly no attention from the engineer, and is much more econom'-~' 

 than any other piece of apparatus that can be obtained for similar duty. 



The "Detroit" System is so simple in its operation that when fully realized, 

 the possibilities, and new uses, will suggest themselves. 



"Watch you Condensation," Book No. 5 A, sent upon request. 



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Mention The Rwrlew when yon wrtf. 



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iSl ■. 2«th S«t««t NIW VOIIK 



AI^%ys mention the Florists' Review wfaeo 

 writing advertisers. 



Use Rippley's 



No. 200 Hot Water Heater 



In Kreenbouges, parages, hog and 

 poultry houge8, small buildlnKS. 

 Price, $42.50, frelRht paid. 

 Louis J. L. Amoureaux, Norton, 

 Haas., says: "Tonr No. 200 Heater 

 cared for our^reenhouse, 76x14x9 

 ft., last winter at 23 below zerot* 



Mall orders direct. Write for clr- 

 enlarfl of heaters and steamers. 



RIPPLEY MFG. & STEEL BOAT CO. 

 Box F, Qrafton, Illinois 



