118 



The Florists^ Review 



August 21, 1»U». 



Greenhouse Heating 



ScBSCBiBEBS 8X6 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 boil- 

 ers, or the amoimt 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. 



WHAT TO PAY FOE STEAM. 



Have yott any data on what would be 

 a fair estimate of the cost of heating a 

 greenhouse by steam at so much per 

 thousand feet of glass? I have an op- 

 portunity to obtain steam from a mill 

 nearby, but do not knovir what would be 

 a fair price to pay for it. An early an- 

 swer will be appreciated, as I want to 

 get the pipe laid as soon as possible. 



O. D. E.— Mich. 



The price of steam from a service sta 

 tion would depend upon local conditions, 

 of which yo« give no hint in your in 

 quiry. 



There are instances in which green- 

 houses are heated by the exhaust steam 

 from light plants, waterworks or other 

 power plants operated on the 24-hour 

 basis. This exhaust steam would be a 

 total loss to the seller, except for the 

 neighboring florist's ability to use it, 

 and consequently the price is moderate. 

 Where the steam is manufactured for 

 sale, as in the case of central heating 

 plants, the price is measured by a dif- 

 ferent standard. In that case, it would 

 be figured by what it had been costing 

 to operate the greenhouse heating plant. 

 Anything up to that sum would be a fair 

 price for steam from the central heating 

 plant. In figuring the cost of heating, 

 coal, cartage, labor and repairs would 

 be among the items figured. Also, if a 

 grower could save the space and expense 

 of installing boilers, he might well pav 

 something more than if he already had 

 boiler equipment which would go into 

 disuse when the steam was purchased 

 from outside. 



HEATING A LEAN-TO. 



I am sending a sketch of the house T 

 have and of a proposed lean-to. The 

 main house is to be heated for carna 

 tions and the lean-to for lettuce and 

 other plants requiring low temperatures. 

 Both are to be heated by a IS-horse 

 power steam boiler. With an outside 

 temperature of 20 degrees below zero, 

 how many IViineh pipes would be neces 

 sary and how should they be arranged in 

 the lean-tot Could I spare any of tho 

 east coil in the main house and arrange 

 the remaining piping so it would bo 

 more effective? T. B. G. — N. Y, 



The sketch shows the cross section of 

 a greenhouse 21x100 feet, with forty- 

 four inches of glass in each of the walls. 

 There is a 3-inch flow pipe below the 

 ridge and four l^i-inch pipes under 

 each of the four benches. The lean-to 

 is 10x100 feet, with two feet of glass 

 in the side wall. If the house is well 

 built and an eflScient steam boiler is 

 used, there should be no difficulty in 

 heating the greenhouse to 55 degrees 



■ aBDBDHaHaHaBaaaBaBDaaHDHDB 



: KROESCHELL : 



: GREENHOUSE SPECIALTIES " 



D 



D 



B 

 D 



D 



D 

 B 

 D 



D 



B 

 D 



NOT 

 CAST 



IRON 



Made In 20 Sizes 



HEATING and -COOLING are two branches of engineering on 



which we specialize for the greenhouse trade. 



Over thirty years have been devoted by us to the construction and 



designing of boilers and refrigerating apparatus. 



During this period we have furnished and installed heating and 



cooling systems for the most successful greenhouse men in this 



country. 



Tubeless Boiler 



KROESCHELL Hoilers are making the most wonderful greenhouse 

 heating record in the world. Florists who have used other makes 

 are constantly giving the KROESCHELL the highest praise. 



KROESCHELL: 



PIRt it WATER TUBt 



vATCNTeo laii 



BOILER. 



The High Pressure Kroeschell— a highly efficient unit for steam 

 plants 100 H. P. and over. 



13,468,320 so. ft. of glass was eciuipped with KROESCHELL Boilers 

 during the past five years. 



Water Tube Steam Boiler 



When in need of refrigeration investigate the Kroeschell system- 

 its high efficiency and low cost of operation place the Kroeschell 

 System of Refrigeration in the foremost rank of greenhouse use. 

 Our system of Kefrigeration and Cooling is easily installed— per- 

 fect control of temperature and absolute safety insured— no am- 

 monia used for this system. 



Send for Boiler or Ice Machine Catalogues. 

 State which is wanted, 



BUY DIRECT-FACTORY TO USER PRICES 



KROESCHELL BROS. CO. 

 KROESCHELL BROS. ICE MACH. CO. 



o 



B 



a 



D 

 B 

 D 



444 W. Erie Street, 

 CHICAGO, ILL. 



D 



D 



