114 



The Florists^ Review 



August 25, 1021 



side is flusli with the grade. There are 

 6,500 feet of glass in tlio houses, which 

 are heated to a tein|K'rature of 50 de- 

 grees at night. As we are changing 

 from steam to hot water, we are at a 

 loss to know what kind of fuel to buy, 

 and should like some information on the 

 subject, especially a comparison of costs 

 of soft and hard coal. We are advised 

 by Lord & Burnham Co. to use hard coal 

 in their boilers, but we have always used 

 soft coal. Hard coal, egg and pea, costs 

 about $13 a ton delivered and soft coal 

 costs about $7.50. How much soft coal 

 and how much hard coal would be need- 

 ed for an average winter? Would the 

 consumption of hard coal be enough 

 smaller to somewhat nearly equalize the 

 ilifl'erence in costs, or would the only 

 advantage be the ease of firing? If we 

 purchase hard coal, is it a good plan to 

 use egg and pea in combination, the pea 

 for quick firing and as a bank over the 

 egg? If so, how many tons of each 

 should we purchase for the winter's sup- 

 ply? F. G.— N. Y. 



So much depends upon the quality of 

 the coal, especially if it is soft coal, that 

 we cannot give a definite reply to your 

 <luestions. At the prices mentioned, if 

 both are of good quality, we should con- 

 sider the soft coal the cheaper, but in 

 most sections soft coal sells for from 

 $9 to $10 per ton, if of good quality. 

 Hence, we judge that the soft coal men- 

 tioned is not of the best and may prove 

 to be the dearer. 



Since soft coal requires a grate con- 

 siderably larger than hard coal requires, 

 it is advisable to use a boiler rated at 

 nearly twice the actual radiating sur- 

 face. As near as we can estimate from 

 the data given, about 1,650 square feet 

 of radiation will be required for the 

 four houses. This means that to use 

 soft coal a boiler rated for 3,300 square 

 feet of radiation will be required. We 

 are not advised regarding the rating of 

 a W-3G-6 boiler. 



An average of six tons per month for 

 the heating season will be required if 

 hard coal is used. At the same cost per 

 ton we prefer egg to pea coal, although 

 the latter answers well for banking, 

 and, at a somewhat reduced price per 

 ton, the pea coal might be used to ad- 

 vantage for this purpose, using one- 

 half as much as of the egg. From 

 twenty-five to fifty per cent more soft 

 than liard coal will be used. 



IMPROVING A CHIMNEY. 



We are planning to erect a green- 

 house in addition to the present one. 

 The new house will be 16x48 feet, and 

 we desire to put in a boiler sufficient to 

 heat both. In the new house there will 

 be 6-foot walls of board, with two feet 

 of glass in the south side of the house. 

 The present house has been heated with 

 hot air flues, but we desire to change to 

 hot water and we want to know how 

 large a boiler can be used with a chim- 

 ney 8x12 inches inside. There is a par- 

 tition in our chimney. Would it be 

 possible to make an opening in the par- 

 tition where the furnace pipe enters and 

 then take out enough at the top of the 

 ohimncv to make an opening 12x16 

 inchest N. D. B.— la. 



It is not quite clear as to what changes 

 in the chimney are suggested, but it 

 appears that the chimney has two flues, 

 each 8x12 inches, and it is proposed to 

 make an opening between them at the 



GET READY NOW 

 For Next Winter 



You'll soon need to start your fires. Reline your 

 boiler settings with a permanent one-piece inner 

 wall, made of the pioneer and only genuine 



BETSON'S 



■ TRADE ■■ MARK 



The result is a monolithic, heat-resisting furnace lining that 

 eliminates the thousands of joints of ordinary fire brick. It 

 does not crack nor crumble and there are no separate bricks 

 or clay mortar joints to chip, loosen or fall out. 



Front and rear arches and side walls can be made by any 

 workman in a smooth, continuous piece with Betson's Plastic 

 Fire Brick. 



Send for practical 

 booklet on one-piece 

 Furnace Linings. 



BETSON PLASTIC 

 FIRE BRICK CO., Inc. 



p. O. Box 386-16, ROME, N.Y. 

 New York Office, 13-16 Attor Place 



IMICO 



Hot Water Boilers 



Made by 



Illinois Malleable Iron Co. 



1801-1825 Diversey Boulevard 



CHICAGO 



Are noted for COAL ECONOMY and 

 good results generally ; 



SEND FOR CATALOGUE 



point where the smoke pipe enters. This 

 would considerably increase the effi- 

 ciency of the chimney, but would not 



double its capacity. Just how large a 

 boiler could be used with such a chim- 

 ney depends considerably upon the con- 



