120 



AGRICULTURE HANDBOOK 134, U.S. DEPT. OF AGRICULTURE 



supplied from an automatically operated, liijjh- 

 pressui-e boiler (80 to 110 p.s.i. and a rated horse- 

 I)ower of 20 or more). 



If no prefilti'ation or inline cartridg:e filters 

 are used, the finished sirup can be efficiently 

 and economically filtered immediately after it is 

 drawn from the evaporator. A battery of three 

 or more open, flat, felt filtei's stsould be used. 



Allowance must be made for loss of water as 

 steam while the sirup is being filtered. This loss 

 tends to raise the Brix value of the sirup 

 approximately Y . 



S;i|> .S|||»|>|i4-|-s 



Sap can be obtained in any one of three ways: 

 (1) It can be obtained from rented trees; (2) it 



Table 18. — Capital investment in plant and equipment and cost of depreciation and repairs for 



small oil-and-steam type plant ' 



Life 

 length 



Yearly 

 depreciation 



Yearly 

 repairs 



Dollars 



Land (1 acre at $200) 200.00 



Roadway, ramps, grading 



Building (1,226 sq. ft. at $4 per sq. ft.) 



Equipment and other items: 



Sap-receiving tanks (19,495 gal. at $0.08,3 per gal.) 



Germicidal lamps for sap receiving tanks (12 at $25) 



Pump for sap 



Sap filter 



Flue-type sap evaporators (4 at $650) 



Arches for sap evaporators (4 at $287) 



Covers and stacks for sap evaporators (4 at $160) 



Steam semifinishing evaporator, size 5 x 6 ft 



Cover and stack for semifinishing evaporator 



Steam finishing evaporators and coils (2 at $100) 



Hoods and stacks for finishing evaporators 



Float valves (5 at $5) 



Oil burners (4 at $332) 



Smokestacks (4 base stacks at $31; 4 top stacks at $57) 



Finishing filter (2 at $14.70) pressure cartridge 



Finished sirup holding tank with heating device 



Finshed sirup storage tank (3,940 gal. at $0.25 per gal.) __ 



Steam boiler (20 h.p.), installed 



Oil tank (8,000 gal.) 



Automatic sirup drawoff 



Gravity filter 



Pumps and motors to filter and to finishing evaporators (2 



units at $75) 



Can filling equipment 



Thermometers (2 at $50) 



Testing equipment ( re fracto meter, $100; hydrometer, $48; 



scales, $150; thermometers, $10) 



Portable power-stirring device 



Water supply (well) plumbing, sink 



Restroom furnishings 



Office equipment 



Other installation charges (burners, tanks, pumps, etc., 



besides cost of equipment) 



Miscellaneous 



Total 



' About 8,800 gal. per year. 1962 dollars. 

 Source: Pasto and Taylor («6). 



Dollars 



