90 



The Florists^ Review 



SUPTEMBKK 11, 1913. 



tention to the extremes of the system 

 and to neglect the intermediate details. 



Power plant managers are constantly 

 applying their ideas of economy, as 

 shown in the selection of boilers that 

 guarantee the most steam from a given 

 amount of fuel, etc. If they can ac- 

 complish a saving of five to ten per 

 cent by the use of stokers, fuel econo- 

 mizers, or other devices, they regard it 

 as a great triumph; while, on the other 

 hand, they allow a large percentage of 

 the value of their fuel, the greatest 

 item in operating expense, to go to 

 waste — a preventable waste — through 

 condensation of steam. 



Waste of fuel and power through 

 condensation losses are incessant and 

 well-nigh universal, mounting up to a 

 high total in the course of a year. The 

 loss of steam by condensation in the 

 steam lines has been calculated to be 

 half a pound per hour for each foot of 

 piping, which represents a loss of about 

 an ounce of good steam — coal or its 

 equivalent. This means four pounds 

 of coal wasted per week for each foot 

 of steam piping. 



SIZE OF SMOKESTACK. 



Will you please give us some infor- 

 mation about a smokestack for our 

 boiler? We are using an eighty horse- 

 power, brick-set, return tubular steam 

 boiler, set all above ground. The 

 greenhouses are in a broad valley, so 

 the drainage is good. How large a steel 

 stack will be needed? In case we de- 

 cide to erect a brick stack, how many 

 brick and how much cement will be re- 

 quired? We wish to build the stack as 

 cheaply as it is possible to <lo so and 

 still have it satisfactory. S. B. 



A steel stack twenty-four inches in 

 diameter and fifty feet in height will 

 answer for an eighty horse-power 

 boiler. By making it sixty feet high, a 

 stack of slightly less diameter might be 

 used. A brick stack should have the 

 same dimensions, and about 1,000 fire 

 brick and 10,000 stock brick will be re- 

 quired. A cement foundation about 

 eight feet square and with a depth of 

 from three to six or more feet, accord- 

 ing to the character of the subsoil, 

 should be provided for the brick chim- 

 ney. 



TWO NEW JERSEY HOUSES. 



Please give me some information as 

 to how to pipe my greenhouses for hot 

 water. One house is 14x33, seven feet 

 high to the ridge and four feet to the 

 eaves, Avith board sides. The roof is 

 tight. This house I want heated to a 

 temperature of 55 degrees. The other 

 house is 12x36, ten feet to the ridge 

 and four feet to the eaves, with board 

 sides and glass in both ends. In this 

 house I want a temperature of 40 to 

 50 degrees. The outside temperature 

 seldom drops below zero. How large a 

 boiler will be needed to heat these two 

 houses? The beds will be solid. 



L. S. A. 



The boiler for the two houses should 

 be rated for 400 to 450 square feet of 

 radiation. To heat the house 14x33 

 feet to 55 degrees in zero weather, run 

 a 2V^-inch flow pipe about two feet 

 below the ridge, giving it a slight fall 

 to the farther end of the house. At 

 that point branch it each way, using 

 2-ineh pipes for this purpose, and con- 

 nect them with nine I'^-int^h returns, 



WHEN YOU BUY-OET A KROESCHELL 

 'THE BOILER OF UNEQUALED FUEL ECONOMY' 



Expressions From Men Who Know Boilers 



PLACE YOUR ORDER AT ONCE 



KROESCHELL BROS. CO^^c^Tca'S;*, ?£ 



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