M 



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82 



The Florists' Review 



Adqdst 10, 1916. 



it is doubtful whether it -would pay to 

 install an oil-heated system in a range 

 containing less than 50,000 square feet 

 of glass, and then the relative cost of 

 oil and coal would need to be consid- 

 ered carefully before deciding upon a 

 change. 



In addition to the oil burner and the 

 steam boiler for vaporizing the oil, it 

 will be necessary to furnish a storage 

 tank, and, unless the greenhouses are 

 located near a railway siding, a tank 

 wagon for hauling the oil will also be 

 needed. I do not know of any con- 

 cerns that make a specialty of gas burn- 

 ers, but it is probable that these can 

 be furnished by several of the firms 

 that advertise greenhouse boilers and 

 heating supplies in The Eeview. 



HOT WATER OE STEAM? 



Will you kindly advise me as to the 

 best plan for my heating system? I 

 am now using two sectional hot water 

 boilers, each in a separate cellar. One 

 of them, an 8-section boiler, heats two 

 houses, each 32x120. The other, a 5- 

 section boiler of the same make, heats 

 one house 32x100 and one house 20x100. 

 I am going to build two more houses, 

 each 20x100, and I have got the cellar 

 finished; it is 20x30 and ten feet deep. 

 I intend to install one boiler large 

 enough to heat the six or seven houses. 

 Would you advise me to put in a hot 

 water boiler and hold the present ones 

 in reserve? I can retain them as re- 

 serves if I heat with hot water, but I 

 cannot do so if I use steam, as the 

 boilers are at different heights and each 

 in a different cellar. 



I intend to put in a steel boiler of 

 about fifty horsepower for steam, or 

 about the same type for hot water. The 

 present houses are piped too heavily 

 for steam, but I need not make any 

 alteration except to take some of the 

 piping out. Would I gain anything by 

 using steam in heating! How about 

 the coal bill? Will a boiler of the 

 size mentioned be large enough to give 

 me plenty of heat in zero weather? 



J. G. K.— Md. 



If the present boilers are in good 

 condition, it will certainly be a good 

 idea to keep them in reserve as sug- 

 gested, if you decide to use hot water 

 for heating the new houses. You would 

 probably need two boilers, each rated 

 for about 3,000 square feet of radia- 

 tion, for the range complete, if heated 

 ■with hot water. On the other hand, a 50- 

 horsepower steam boiler would be large 

 enough to heat the six houses described, 

 provided the average temperature de- 

 sired is not greater than 60 degrees at 

 night. You would need practically one- 

 half as much radiation for steam as for 

 hot water, which would make the cost 

 of installing the system considerably 

 less for steam than for hot water. The 

 fuel required, however, is generally con- 

 siderably less when hot water is used. 

 In either case, if a cheap grade of fuel 

 is to be used, a night fireman will be 

 needed. 



MINNEAPOLIS. 



Tlie Market. 



The intensely warm weather was 

 checked a few hours during the last two 

 days of the week by rain, a thing 

 badly needed throughout the city and 

 country, as everything in gardens and 

 fields was beginning to burn. The heat 



MOREHEAO 

 SYSTEM 

 FEEDING 

 BOILERS 



320' 



The Above 



Temperature 



Record 



of condensation re- 

 turns from a steam 

 pump system was 

 taken under exact- 

 ly the same con- 

 ditions for both 

 pump and More- 

 head System. 



Between 2 and 2:30 

 p. m. the steam 

 pump was cut into 

 the line in place of 

 the Morehead Sys- 

 tem. 



Oh No! 



—we don't want you to think that the above tem- 

 perature chart represents greenhouse conditions 



—because this chart was taken on a high pressure line 



—but it brings out graphically the great advantages 

 of the 



IZ>8^ k to Boiler I> 



M 



over a steam pump for steam line drainage and boiler 

 feeding. 



Substituted for pumps, the Morehead System will 

 keep all steam pipes clear of condensation and return 

 it to the boiler as pure, hot feed water quicker and 

 on 90% less steam than a steam pump will do it. 



The installation expense is small— the results great. 

 It matters not whether your institution is large or 

 small, the Morehead System will save sufficient to 

 pay for itself in a few months' time. Letters in our 

 files prove this. Let us tell you about it. 



Morehead Manufacturing Co. 



Dept. "M' 



383 



Detroit, MichiKaa 



