Document XO2v0dRn32xmX5ZgbggL3Nr1y

Boilers, Heating and Power The Bigelow Company Established 1860 Main Office and Works New Haven, Connecticut New York Office--Graybar Building Manufacturers of Bigelow Hornsby Water Tube Boilers Bigelow Horizontal Water Tube Boilers Bigelow-Coimelly Low Head Water Tube Boilers Bigelow Horizontal Return Tubular Boilers Bigelow Electric Steam Generators Bigelow Two Pass Boilers Bigelow Manning Boilers Bigelow Upright Boilers The Bigelow Two Pass Boiler for Heating and Power The requirements in considering a boiler especially for steam heating--are fi^st cost, efficiency and maintenance, and the steel heating boiler particularly the Bigelow Two Pass type, we believe meets the above desired requirements most favorably. First Cost--The F. O. B. price of a steel boiler is often higher than for other types, but, of course, the installed cost is the correct way to figure. For the proper erection eft a sectional boiler experienced and high priced men are required while the Bigelow Two-Pass Boiler is shipped practically all assembled and requires but a small amount of mason work. Efficiency--Correctly designed as a heat absorbing piece of apparatus, the area of the gas passage in the first pass is approximately one third greater than that of the return pass. This results in better heat transmission, due to the more uniform velocity of the gases over the heating surface as they are cooled. The furnace is constructed of standard fire and red brick and is encased in a heavy sectional plate steel casing which adds to the neat appearance of the installation and prevents infiltration of air through cracks that may develop in the brick work. Maintenance--The Bigelow Two-Pass Boiler is constructed without crown sheet or water legs, so there are no staybolts to break and cause leakage or danger of ruptured Being constructed of steel, there is no likelihood of cracking sections due to sudden changes of temperature, variation in thickness of material under pressure, and no unequal strains are set up in' assembling. The many installations of the Bigelow Two-Pass Boiler both for heating and power, have proven it to be economical in operation and low in main tenance cost. Features of the Bigelow Two-Pass Boiler No Staybolts Easy to Install Quick Steamer Low Draft Loss Easy to Handle Long Gas Travel Efficient to Operate Low Maintenance Cost Ample Water Capacity Occupies Small Floor Space Low Exit Gas Temperature Ample Steam Storage Capacity Inside of Boiler Readily Accessible Furnace Suitable for Oil Burning No Cast Iron in Contact with Pressure Large Furnace Volume for Combustion Area of Gas Passes Properly Proportioned No Special Brick Shapes Required for Furnace Constructed to A.S.M.E.,or Mass. State Requirements Fire. Brick Furnace Walls, which Aids CombustionBuilt in Units of 25. 50, 75. 100. 125 and 150 hp. All Sizes Built as a Standard for 15 and 125 lb. W. P. Brick Work Easily and Cheaply Repaired when Necessary Boiler Rating Based on 10'sq. ft. of Water Heating Surface per hp. 570 The Bigelow Company Boilers, Heating and Power general information of bigelow two-pass boiler Heating. iSlb.W.P.* No. of Boiler for Power, 123 lb. W. P.. Total Heating Surface..............................*9Capacity Steam Radiation........................... #q.ft. Capacity Water Radiation.......... .......ft. Grate Area................... ............................** Diameter stack, one boiler............................ in. Diameter stack, tiro boilera....................... .in. Height stack................ ................................ fee* Area breeching, one boiler........... .. aj. ft. Area breeching, two boilera.......................... sq.h. Size of steam outlet, 15 lb. W. P................in. Size of steam nozzle. 1251b. W. P...............in. Size of safety valve outlet, 15 lb. W. P.. .in. Site of safety valve nozzle. 125 lb. W. P.. in. No. and size pop valves. 15 lb. W. P... .in. No. and size pop valves, 125 lb. W. P... .in. Blow down and return conn., 15 lb. W. P.. .in. Blow-off connection, 125 lb. W. P................. in. No. red brick required........................................ No. fire brick required........................................ Area of shell to be insulated.................. sq. ft. Weight bare boiler.........................................lbs. Weight boiler comp, cstgs., trmgs. and steel cuing..............................................lbs. Length over all..........................................ft. in. Width overall............................................. ft. in. Length Urge shell...................................... ft. in. Steam outlet to floor. 15 lb. W. P.........ft. in. Steam nozzle to floor, 125 lb. W. P... .ft. in. I Safety valve outlet to floor. 15 lb. W.P., ft. in. - Safety valve noz. to floor, 125 lb. W.P., ft. in. Flue neck to floor...................................... ft. in. Water line to floor...........................................ft.in. Floor to shell at front of boiler.................... ft.in. Floor to shell at rear of boiler......................ft.in. Diameter of small shell.................................. in. Diameter of large shell...................................in. Front of boiler toC safety valve nozzle, ft. in. Rear of boiler to C steam nozzle,............. ft. in. . Height of bridge wall................................ ...ft.in. Grate to floor.................................. .ft. in. Length of furnace............................... . .ft. in. Width of furnace............................................. ft.in. Size of flue neck...:......... ......................... in. Thickness of side wall.....................................in. Thickness of front wall................ in. Thickness of bridge wall at bottom.. .ft. in. Thickness of bridge wall at top.................in. Floor to top of setting...... 1............... ft. in. Depth and width of rear pier.................ft. in. Back of pier to rear of boiler. ..............ft. in. Distance required to open rear cleanout doors................................................... ft. in.; 240H 241H 242H 243H 244H 245H 240 241 242 243 244 245 270 3200 5300 12.3 ' 16 20 60 1.3 2.2 6 3 2 3 i-r 1-2' 3 2 1400 550 100 4675 . 505 6000 10000 16.5 20 27 60 2.2 3.8 6 4 2V!i \-W 2-2' 3 2 1550 625 120 8482 751 9000 14800 20.8 24 30 60 3.0 5.2 8 5 3 4 1-3' 2-2' 3 2 1650 700 145 10732 1003 12000 19800 28.0 27 34 60 3.8 6.3 8 54 4 1-4' . 2-2*// 4 2 2100 800 170 14000 1273 15200 25200 31-0 30 38 60 4.5 8.0 8 6 4 5 1-4' 2-2*// 2 2300 900 195 16717 1501 18000 29700 33.5 30 42 60 5.2 9.4 8 6 4 5 1-4' 2-3' 4 2Vi 3000 1100 220 18823 7993 11'9* y 4' y 8' rv/t* rw 7' 4' 7'63// TWz 6'5V/ 4' 7' 2'I0' 32' y544' ' 4'2' y 3' 2' I' I 4' y Oi'' 8'x22' 'W 12492 13' O' 5'11' 6'2' 8' 1!// 8'4 T 10*// 8' V/0 8'3A' 6'1(4" 4r'74'' 38' 66' 4' 7' 4' y rO' r i' 4y'68'' U'x24' 15607 14'1* 6'5' 6'8' 8' 11' 9' Is// VTA* vs8' 10*// y o' rr 42' 72" 5' 3' 4' y 7i'' 2'I' yo' 4' 2' l2>//*32' 19841 W20 6' 11' 7'8' 9'3' 9' 53// 8'lfy/ VS 2* 5' 46' 78' 6' 3' y 8' 2' 11' 2' I" 6'O' . 4'8' 13//*36' ty 23133 16'4' 7' 5' T 8' 9' 1!// vsu%nwx' 5'4' 2r7' 50* 84' 6' 5' 5'8' r 11 ri' 6y'O2'' l5*//x40' 'W 25859 18'lO' 7'5' 8'8' %09' nVa* i<yi 9'73// V\\* IO' 01// S'6%* 5'4' 2'7' 50' 84' 8'O' 6'7' T 11' 2' 1' '6' 6' y2 l5*//x42' !& 1'4' % J'0'x3'0' 3' W I'4' 1'4' i V 4' %66*'8/,'' % I'0**3'0* 1'0'*3'6' J'4'x4'0' 3'7*//~ 4' W 4'9>// V 4'"" W 7'11' !'6'x4'6' 4' 71/2' 2'O' 14' 7'11' 1'6'x4'6' 5' 7' rir r '4 2'6' 2' ID' no* 571