120 



The Florists' Review 



Apbil 7, 1421 



Greenhouse Heating 



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 boil- 

 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. 



CHANGING HEATING SYSTEM. 



Would you advise us to plan a change 

 of our heating system from hot water 

 to steam? 



For ten years we liave used hot water 

 for heating and i^has been satisfactory. 

 The range has been gradually added to 

 until the present. Tlie heating equip- 

 ment is shown in green on the sketch. 

 This consists of a 4y;.-incli headline 

 flow and return, with nine 2-inch flows 

 going to the far end of the houses, 

 where each drops into three returns, 

 sometimes four, which again flow into 

 414-iuch main returns and thence back 

 to tlie boiler. 



Tlie old boiler is a 20-horsepower, 

 return tubular boiler, on which the 

 openings have been enlarged, making 

 it into a hot water boiler. This boiler 

 would be worthless for steam, but could 

 be used a few more years for hot 

 water. Last year, in order to get more 

 heating capacity, wo bought an addi- 

 tional boiler of seventy-five horse- 

 power, tlie Atlas steam boiler, on 

 whii-h the state inspector will pass us 

 for eighty i)ounds. We connected it 

 in the battery with the smaller boiler, 

 so as to have more heating capacity. 

 If we are to continue using it for hot 

 water we must enlarge the openings. 

 We have hesit.-ited about changing it un- 

 til we could be sure that we ought not 

 to consider a change from hot water to 

 steam. 



Roth boilers are located together in 

 1!:;' cellar, so that the water level would 

 1) • below the lowest returns in case 

 steam were used. Therefore we sup- 

 pose the system should work equally 

 well for either hot water or steam. 

 Would we have to remodel all our ])res- 

 cnt heating pii)es in case of a change, 

 or would the L>incli flow pipes with 

 their 3-inch returns under each bench 

 work all right for steam just as they 

 are? They are valvcd on the 2-inch 

 flow pipes onlv, with gate valves. 



As we understand it, the hot water 

 plant should require less night atten- 

 tion, but the steam would give us better 

 forcing facilities for special crops; 

 steam would require a night man, 

 whereas wo now get along fairly well 

 without one; the new radiation required 

 for the new houses will cost us more 

 for hot water than it would for steam, 

 but what we are desirous of knowing 

 definitelv is, would there be enough sav- 

 ing now'and later to justify a change? _ 

 On the drawing the black lines indi- 

 cate the present building outlines; the 

 green lines indicate the present heating 

 pipes; the red lines indicate the heat- 

 ing pipes that must be installed this 

 summer and the yellow lines show that 

 we are contemplating doubling the 

 whole plant in the far future. The pic- 

 ture sent will show the general arrange- 



Do you want true heating values for your money? Many florists, 



to their sorrow, have made the mistake of buying cast iron 



>^l>oilers, which, because of their ratings, appeared to be cheaper 



than the Kroeschell boiler. 



Tlie extravagant ratings of cast iron boilers are misieading, and 

 have been the cause of much disappointment and serious troubieto 

 many growers. The fuei waste is enormous when cast iron boiiers 

 are used for commerciai purposes, such as greenhouse heating. 



Do not make a mistake when selecting your new boiler; get a Kroescheli and 

 \ you will never be disappointed. 



KROESCHELL REPLACES 

 TWO CAST IRON BOILERS 



Range of H. M. Totman. Randoloh, Vt,— the largest cut flower establishment 

 in Vermont. Mo. 7 Kroeschell heats the entire plant. 



The Kroeschell 



has the highest stand- 

 ard of heating values. 

 Immense Sel(<leaning 

 Heating Surface, Long- 

 est Fire Travel, Perfect 

 Combustion, Free Cir- 

 culation, Thin Water- 

 ways, Honest Working 

 Capacities, Unequaled 

 Fuel Economy. 



The Kroeschell 



has replaced hundreds 

 of cast iron boilers. 

 In every case higher 

 temperatures are se- 

 cured with the Kroe- 

 schell with the same 

 piping and with less 

 fuel. 



KROESCHELL REPLACES 

 FOUR CAST IRON BOILERS 



Range of A. B. Knowlton, No. Grafton. Mass.-devoted to the growing of high- 

 grade carnation-. No. 13 Kroeschell heats entiie plant. 



KROESCHELL BET1ER THAN CAST IRON 



Your No. 7 Kroeschell Boiler, rated at 

 15.000 so. ft of glass, iscarryingmy entire 

 range of 17,000 SQ. ft. of glass - it might 

 heat more. We maintain a temperature 

 of 50" and have no trouble to keep the 

 proper temperatures in the coldest 

 weathpr. During the cold snap of 1912 we 

 fired every three hours during the night. 

 I find it a -aving in fuel to fire often. I 

 have tlie Kroeschell Boiler six years and 

 the only expense is one set of grates. No 

 other but a plale boiler formi. (Si?ned) H. 

 M. Totman. Jan., 1912. Randolph. Vt. 



KROESCHELL BETTER THAN CAST IRON 



Enclosed find photo showing partial 

 view of my range which you are at liberty 

 to use in connection with any advfertise- 

 ment you see fit. In regard 10 the No. 13 

 Kroeschell Boiler, we are now using it for 

 the fifth season. The lonier ore use il the better 

 we Nke ih It has talea the *lace of four cast 

 iron boilers at a big saving of coal anH labor. No 

 matter what the weather is outside we 

 have no trouble whatever in keeping the 

 temperature just where we want it. 



• Signed) A. B. KNOwr.xoN. 

 .Ian. 10th, 1912. North Grafton, Mass. 



KROESCHELL BROS. CO., 



444 W. Eri* Street 

 CHICAGO, ILL. 



