jANUABr 10, 1907. 



The Weekly Florists'" Review^ 



549 



west sides. The height of the house is 

 twelve feet. 



There are six 4-inch flows under the 

 benches and ten 4-inch returns; five open 

 expansion tanks on the farther end. The 

 flows when leaving the main rise about 

 ten inches, then run to the farther end 

 with another rise of ten inches. There 

 are two boilers, but the work is not sat- 

 isfactory. 



When the mercury shows 10 degrees 

 above zero outside, with a good breeze, 

 the thermometer in the southwest end 

 registers about 42 degrees, the northeast 

 about 50 degrees. Last winter I could 

 not get the pipes on the west side to get 

 warm, while the east side were boiling, 

 although they are level ; so I put a valve 

 in the main and took an outlet from 

 the flow above the boiler and keep the 

 valve closed. It heats fairly well noAv, 

 but there is quite a difference yet. I 

 also put in a valve between the first 

 boiler and the main flow and keep it half 

 closed. I use only one outlet from the 

 first for flow, but take one branch on 

 tlie top of the boiler, so the nine pipes 

 west of the valve, in the main flow, have 

 the other boiler and one branch from the 

 first to feed them. 



I had several men examine the system 

 and they all disagreed as to the trouble. 

 Are there enough pipes in the house? 

 jrhe boiler pit is eight feet deep and 

 16x20, but the heat is unbearable in a 

 cold snap. How can I get the farther 

 end hot enough, when the returns are 

 hot near the boilers? J. A. 



The piping in your houses is ample to 

 maintain a temperature of 70 degrees. 

 It is evident that the circulation is too 

 tardy. It is possible that by installing 

 a circulating pump you could greatly im- 

 prove conditions. But I think that an- 

 other plan may help, i. e., calk up the 

 open expansion tanks and replace them 

 by elevated expansion tanks connected to 

 the system close to the boilers on the 

 main returns. This will give you some 

 pressure if the tanks are elevated ten or 

 twelve feet and will tend to improve 

 conditions. As I do not have the capacity 

 of the boilers I can not advise in regard 

 to the provision you have made for 

 lipating. L. C. C. 



BOILER CAPAQTY. 



How many square feet of radiation 

 will a thirty-five horse-power boiler heat, 

 using steam. S. & B. 



If your boiler is a horizontal tubular 

 boiler, brick set, and is rated at thirty- 

 five horse-power, it should heat about 

 4,000 square feet of radiation. If it is 

 a locomotive type it should not be loaded 

 with more than 3,000 square feet of pipe 

 or radiation. L. C. C. 



A CONTEMPLATED HOUSE. 



Kindly tell me how to heat a green- 

 house, walled in with cement blocks, 29x 

 100 inside measurement, the rafters rest- 

 ing on the walls and no glass in the 

 sides. Would you use cypress or iron 

 rafters? The whole thing, including 

 benches, will be cement, iron and glass, 

 provided you recommend iron rafters. 

 What horse-power boiler should I use? 



W. A. L. 



If you use hot water vou should se- 

 cure a boiler rated to carry about 1,500 

 square feet of radiation. The piping 

 fan be arranged with 2-ineh black pipe, 



William E. Hielscher. 



using sixteen runs the length of the 

 house, which can be arranged in three 

 or four manifolds. If four manifolds of 

 four pipes each are used one pipe in 

 each coil should be a supply and three 

 returns. If steam is used a 3-inch flow 

 under the ridge, returning through six- 

 teen 114-inch pipes, arranged under the 

 benches, will be sufficient. A steam 

 boiler with 150 square feet of heating 

 surface exposed to the action of the fire 

 wilh be large enough for this one house. 

 With the construction you are using, if 

 not too expensive, should use the U-bars 

 now upon the market, otherwise I should 

 use cypress. In a house with cement 

 walls now under construction I am using 

 cypress gutters and sashbars. 



L.C. C. 



MORE PIPE NEEDED. 



I have an east and west house, 21x101, 

 sides six feet high, eleven feet to the 

 ridge, all good and tight. I have two 

 2-inch overhead pipes, and four li/^-inch 

 flows under eadi bench. My boiler, 

 twelve or fourteen horse-power, is at 

 the east end of the house and twenty 

 feet south. Have I enough pipe to main- 

 tain 60 or 70 degrees temperature in zero 

 weather. F. W. P. 



I regret to state that from the data 

 given it is impossible to say whether or 

 not the house in question is sufficiently 

 piped. It would appear that there are 

 only eight 1^/4 -inch pipes used under the 

 benches. There is no statement to in- 

 dicate whether steam or hot water is 

 used, although the wording of the letter 



and tlie size of pipes mentioned would 

 indicate steam. 



If steam is us^cd then fourteen 1%- 

 incli pipes would furnish sufficient radia- 

 tion with five pounds pressure to main- 

 tain 70 degrees during severe weather. 

 If hot water is used two 2V-!-inch flow 

 pipes should be used and eighteen 2-inch 

 returns under the benches. L. C. V. 



WM. E. HIELSCHER. 



Detroit is the home of many enterpris- 

 ing and energetic young men, among 

 whom none is more thoroughly earnest 

 than William E. Hielscher, who is en- 

 gaged in building up a manufactory of 

 wire work. He started in business a few 

 years ago, with almost nothing at all, 

 and now is the possessor of a profitable 

 and steadily increasing business, built 

 up by strict attention to details until 

 it gives employment to a number of wire 

 workers. 



Mr. Hielscher began his career in the 

 employ of John Petzhoti, who was a pio- 

 neer in Avire making in Detroit. About 

 three years ago Mr. Hielscher started for 

 himself. He is an active member of the 

 Detroit Florists' Club and well liked by 

 the trade. He has a modern equipment, 

 including machinery for making loops 

 and other small standard parts of Avire 

 frames, and besides wire designs the 

 firm also makes iron fences, railings, 

 signs, etc., one example of the latter be- 

 ing the attractive sign of the Bemb 

 Floral Co., Detroit. Mr. Hielscher is at 

 work on a new catalogue and it is his 

 purpose to extend his business so that it 



