122 



The Florists' Review 



April 10, 1919. 



Greenhonse Healing 



Subscribers are invited to write the 

 Editor of this Department with regard. to 

 any details of greenhouse heating that 

 are not understood. When information 

 is desired regarding the capacity of boU- 

 ers, or the amount of radiation required- 

 for a greenhouse, the needed temperatures 

 should be stated in the inquiry, as well 

 as the amount of glass in the side walls, 

 and the dimensions and general arrange- 

 ment of the greenhouses. It is often help- 

 ful, also, to have a sketch showing the 

 location of the houses. 



WILL IT STAND THE PBESSXTBE? 



We are planning to build 7,000 feet 

 more glass and wish to know which is 

 the cheaper heating medium, hot water 

 or steam, for this size of place, con- 

 sidering the present price of pipe. We 

 have one Moninger sectional boiler, 

 which has been used for steam, and one 

 Iowa sectional boiler, which we are now 

 using for hot water. The Iowa boiler 

 has a dome or top section eight inches 

 deep. Will this boiler stand enough 

 steam pressure to heat the same amount 

 of glass as it is now caring for? 



A. A. H.— Okla. 



Since the size of the Iowa sectional 

 boiler is not given, we cannot tell just 

 how much pressure will be required to 

 heat the 8,000 square feet of glass. If 

 the boiler has a g^ate of good size, there 

 should be no difficulty in keeping up, 

 with a low steam pressure, the same tem- 

 perature as could be secured with hot 

 water, and any boiler which is in a 

 sufficiently good condition to warrant 

 its being used could carry a steam pres- 

 sure of two or three pounds, with five 

 pounds as a maximum, without any 

 serious danger. 



The cost of a hot water installation, 

 exclusive of the boiler, will be fifty 

 per cent more than the cost of one de- 

 signed for steam. On the other hand, 

 the cost of fuel and labor for heating 

 with hot water will be about twenty- 

 five per cent less than for steam in a 

 small range. It will probably take five 

 years for the amount saved in fuel to 

 equal the extra cost of the hot water 

 installation. 



STEAM FKOM A MILL. 



We are building a greenhouse, 28x100, 

 and adding a new section, 25x20, to one 

 of the other houses. We are also chang- 

 ing our heating system from hot water 

 to steam. The two old houses will be 

 used for carnations and the new one is 

 intended for roses. Is it necessary to 

 have any heating pipes under the 

 benches in either house? If any such 

 pipes are needed, please state how 

 many. We have 2-inch wrought-iron 

 pipe on hand. We expect to get heat 

 from a mill near here, getting it in the 

 form of exhaust steam in the daytime 

 and live steam at night. Are any data 

 to be had on the size of the pipes that 

 will be needed to convey the exhaust 

 steam? Will traps be needed at the 

 mill and at the greenhouse? 



0. F. E.— Mich. 



From the data given we are not sure 

 of the size of the old houses, but infer 

 that they are 25x100. Whether there is 

 glass in the side walls is not stated. 



If 2-ineh pipe is to be used for the 



DBDHDB-DK 



:kroeschell heating systems^ 



The most modern establishments in this country are equipped with 

 KROESCHELL Boilers and Piping Systems. This highly effective 

 combination will make every dollar you spend for fuel do its utmost. , 



Centralize your heat supply and save 

 the expense of needless fuel and labor. 



C 

 ■ 



c 

 ■ 



D 



D 



D 



^ 



BNGINXKRING ADVICB 



We have assisted many growers in the development of successful heating systems and 



our engineering department offers a service, and the benefit of a knowledge and experience '-' 



of incalculable value tu those who contemplate the erection of heating plants, no matter p 



how small or how large, hot water or steam. 



D 



Th* KROESCHELL System will put hiffh 

 temperature into your heatins lines. 



D 



- KROESCHELL BROS. CO., ^h7J.^o*,?l*i:?** - 



n ' n 



a 



D 



D 



D 



^ifiai^^^i*^ 







